ecotechnic technical manual

ecoTechnic – Oil-Water Separators and Spill Control

Version 1.3 - August 2012

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ecoTechnic

Technical Manual



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Content 1.0 Introduction

2.0 ecoStopTM

Spill Control System 2.1 Product Description 2.2 Benefits and Applications 2.3 Components 2.4 Materials 2.5 Product Range 2.6 Product Performance 2.6.1 Unit operation

2.6.2 Performance Verification 2.6.3 Treatment Flow

2.7 Design Consideration 2.7.1 ecoStopTM Sizing

2.7.2 Maintenance Planning/Frequency

3.0 ecoSepTM

Oil-water Separator 3.1 Product Description 3.2 Benefits and Applications 3.3 Components 3.4 Materials 3.5 Product Range 3.6 Product Performance 3.6.1 Unit operation


3.7 Design Consideration 3.7.1 ecoSepTM Sizing

3.7.2 Maintenance Planning/Frequency 3.8 Optional Extras

3.8.1 Automatic Draw off Device (ADD)

3.8.2 ecoWarnTM

4.0 ecoTopTM

Oil-Water Separator 4.1 Product Description 4.2 Benefits and Applications 4.3 Components 4.4 Materials 4.5 Product Range 4.6 Product Performance 4.6.1 Unit operation


4.7 Design Consideration 4.7.1 ecoTopTM Sizing

4.7.2 Maintenance Planning/Frequency 4.8 Optional Extras



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5.0 ecoLineTM

Oil-water Separator 5.1 Product Description

5.2 ecoLineTM

-a 5.2.1 Benefits and Applications 5.2.2 Components 5.2.3 Product Range 5.2.4 Product Performance

5.2.4.1 Performance Verification

5.2.5 ecoLineTM

-a Sizing 5.2.6 Maintenance Planning/ Frequency

5.3 ecoLineTM

-b 5.3.1 Benefits and Applications 5.3.2 Components 5.3.3 Materials 5.3.4 Product Range 5.3.5 Product Verification 5.3.6 Treatment Flow 5.3.7 Design Considerations 5.3.8 Maintenance Planning/ Frequency

6.0 Product Guides

6.1 ecoStopTM

6.1.1 Description

6.1.2 Features 6.1.3 General Requirements

6.1.4 Specifications 6.1.4.1 ecoStopTM 100 Technical Details 6.1.4.2 ecoStopTM 150 Technical Details 6.1.4.3 ecoStopTM 200 Technical Details

6.1.5 Installation Considerations 6.1.6 Product Support 6.1.7 Other References

6.2 ecoSepTM

6.2.1 Description


6.2.4 Specifications 6.2.4.1 ecoSepTM NS03 Technical Details 6.2.4.2 ecoSepTM NS10 Technical Details 6.2.4.3 ecoSepTM NS20 Technical Details




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6.3 ecoTopTM

6.3.1 Description


6.3.4 Specifications 6.3.4.1 ecoTopTM NT03 Technical Details 6.3.4.2 ecoTopTM NT10 Technical Details


6.4 ecoLineTM

-a 6.4.1 Description


6.4.4 Specifications 6.4.4.1 ecoLineTM -a NA1.5 Technical Details 6.4.4.2 ecoLineTM -a NA3 Technical Details 6.4.4.3 ecoLineTM -a NA6 Technical Details


6.5 ecoLineTM

-b 6.5.1 Description


6.5.4 Specifications 6.5.4.1 ecoLineTM -b NG03 Technical Details 6.5.4.2 ecoLineTM -b NG10 Technical Details 6.5.4.3 ecoLineTM -b NG20 Technical Details


7. Product Integration

8. Product Support

9. Specification Table

References



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Appendix Appendix A – General Arrangement Drawings Appendix B – Operational and Maintenance Manual Appendix C – Handling and Installation

Appendix D – ecoWarnTM

Operation and Maintenance manual



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1.0 Introduction This document provides a review of technical information relating to the selection, design, specification and installation of the Rocla ecoTechnic range of products. The ecoTechnic product range includes of range of oil-water separators and spill control devices which Rocla exclusively license from ecoTechnic. ecoTechnic is an Austrian based enterprise that is a world leader in separating light liquids from water. The ecoTechnic product range includes - ecoStop, spill control system; ecoSep, oil-water separator; ecoTop, above ground oil-water separator; and ecoLine, portable oil-water separator. Further technical information is available from Rocla Water Quality. All ecoTechnic concrete components comply generally with the following Australian Standards where relevant. AS3600-2001: Concrete Structures AS/NZS3725-2007: Loads on buried Concrete pipes AS3996-1992: Metal access covers, road grates and frames AS/NZS4058-2007: Precast concrete pipes (pressure and non-pressure) AS5100-2004: Bridge design, Part 2: Design loads AS5056-2005: Polyethylene and polypropylene pipes and fittings for

drainage and sewer applications

2.0 ecoStop Spill control system

2.1 Product Description

The Rocla ecoStopTM

Spill control system is a secure and reliable hydrocarbon spill management system suitable for any site with a potential for concentrated spills. The system is design to continuously monitor and automatically respond to spills of hydrocarbons and other light liquids. The ecoStop

TM

internal mechanism is fitted within a precast concrete chamber and should be positioned downstream of a designated hydrocarbon potential spill location. The ecoStop

TM

mechanism incorporates a stainless steel shut-off valve rate to 50 KPa or 5 metres of head and a stainless steel float that is designed to float in water and sink in hydrocarbons. The ecoStop

TM

functions on the difference in specific gravity between hydrocarbons and water. As flow enters the chamber containing the ecoStop

TM

its velocity is reduced allowing light liquids such as hydrocarbons to float to the water surface. As light liquid accumulate they displace water from the chamber and as they are less dense than water a large volume is required to displace the



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water thus increasing the overall liquid depth in the chamber. The low specific gravity of the liquid also means that a greater volume is required to keep the float suspended. Both these factors play a role in causing the float to sink and subsequently shut off the valve.

Figure 1: ecoStop

TM

Spill control system

2.2 Benefits and Applications

Benefits

� Control of catastrophic spills � Water tight valve rated to 50kPa � High quality precast components � High operational reliability � Easy installation � Simple Low cost operation and maintenance � Predominantly automated almost eliminating human error � No power input required



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Applications

� Petrol Station � Refuelling facilities � Electrical transformer and generators � Oil/hydrocarbon storage facilities � Inline with an oil-water separator � Any location where hydrocarbons are stored or transported.

2.3 Components

The control system is installed in precast concrete chambers and fitted in the factory with the internal mechanisms so it can be quickly and easily installed once on site. The ecoStop

TM

valve serves as a shut off mechanism, as well as a submerged inlet, greatly reducing the risk of ignition and ensuring that the flow does not short circuit the chamber. The valve is controlled by an arm which is attached to the float using a pin and washer as shown below in figures 2 and 3.

Figure 2: ecoStopTM

Stop valve and float

The outlet pipe has a standpipe fitted to ensure that no accumulated hydrocarbons can leave the unit and water cannot short circuit the system.

Valve

Retaining Pin

Float



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Figure 3: Cross section of an ecoStop

TM

2.4 Materials

The ecoStopTM

spill control system is constructed from high density precast concrete designed to withstand traffic loading in accordance with AS5100.2-2004. The internal components are manufactured from stainless steel (304 Grade) and the seal in the stop valves is manufactured from oil resistant Nitra Butyl Rubber (NBR).

2.5 Product Range

ecoStopTM

is supplied in three standard sizes based on inlet pipe diameter and is configured in DN1050, DN1350 and DN1500 chambers which reflect the flow rates typical of each pipe size. For larger flow rate designs can be customised to meet the majority of requirements.

2.6 Product Performance

2.6.1 Unit Operation Water and light liquids enter the ecoStop

TM

through the stop valve and are directed downward through a submerged inlet reducing the risk of short circuiting and maximising the retention time within the device. Under normal operating

Valve

Retaining Pin

Float

Float Opening



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conditions water will continue across the chamber and out of the device through a submerged standpipe. When a spill occurs light liquids/hydrocarbons rise to the surface of the chamber due to the differential in specific gravity (oil floats on water). As the light liquids accumulate on the surface, the float sits lowers in the liquid until the oil layer reaches its maximum depth of approximately 230mm where the float is inundated and sinks causing the stop valve to actuate. The ecoStop

TM

has been designed for liquids with specific gravity up to 0.95 and the stop valve has a maximum operating head of 50 KPa or 5 metres.

2.6.2 Performance Verification The ecoStop

TM

spill control system has been designed and tested in accordance with the following specifications:

• DIN 1999-100 (2003-10) : Installations for separation of light liquids - Part 100: Requirements on application of installations for separation of light liquids in accordance with DIN EN 858

• EN 858 -1:2002; Separator Systems for Light Liquids (e.g. Oil and Petrol) - Part 1: Principles of Product Design, Performance and Testing, Marking and Quality Control.

2.6.3 Treatment flow The system is designed to operate at the maximum specified flow. Any flow in excess of this may cause the float to sink and the stop valve to be actuated. This may also be caused by additional head loss associated with the higher flow rate and subsequent increased water level within the chamber. This false trigger may occur prior to the accumulated hydrocarbon layer reaching its full depth. The maximum flow capacities are shown below in Table 1.

Table 1: ecoStopTM

Flow Capacities

ecoStop Model Flow Capacity (L/sec)

100 3

150 10

200 20

Nonstandard >20



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2.7 Design considerations

The ecoTechnic range of products is designed specifically for small catchments that are of high risk of hydrocarbon spills, which would usually be protected by bunded areas or covered zones resulting in only minimal direct rainfall run-off. When designing for an ecoStop

TM

or any other ecoTechnic product it is critical to ensure that the maximum pipe flow is catered for and all levels are carefully detailed. The units operate on the water level within the chamber so it is a necessity to ensure that the units are free drain and have no downstream head or pressure that will cause water to back up within the chamber. The depth to invert needs to be considered as each unit has a minimum depth to invert set by the maximum height position of the float. There is no maximum depth restriction on the system but it must be kept in mind that the unit needs to be maintained from the surface and needs to be accessible. For deep installations it is suggest that a working platform is used to allow maintenance workers safe and efficient access to the system if a spill occurs. The float should be keep within arms reach of the concrete cover or working platform at all times. This will ensure that when a spill occurs the float can be easily reset once the spill has been cleaned up. The pollutant load within the water also needs to be considered, as large pollutants and sediment may accumulate in the device and interfere with its operation. For sites with high pollutant loads, some type of upstream treatment may be required to ensure the system operates effectively. Please refer to Rocla Water Quality’s range of stormwater treatment products. It should be noted that the ecoStop

TM

is not a treatment device and is only designed to stop catastrophic spills from passing into the downstream stormwater system. If the water passing through the device is likely to be continually contaminated with hydrocarbons, an ecoSep

TM

Oil-Water Separator should be considered.

2.7.1 ecoStopTM

Sizing Below is a summary of aspects that need to be considered when selecting an ecoStop

TM

spill control system:

• Pipe Diameter at the inlet/outlet determines the size.

• Depth to Pipe Invert needs to be determined based on how maintenance will be performed. Minimum depths apply.

• Pipe Design Flow should match the stated flow capacity and be based on a recurrence interval consistent with the minimum



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maintenance frequency. This will reduce the risk of premature activation of the float valve.

• Trafficable covers are available and standard designs allow for road registered vehicles only. Special heavy load class covers can be manufactured upon request.

• Location of any stormwater treatment device needs to consider its relation to other infrastructure. It is also necessary to consider the location of the unit with regard to maintenance. Below is a brief list of location considerations:

• Access to the site for both machinery and maintenance personnel. Locating within high traffic areas may disrupt day to day transport operations and breach OH&S requirements.

• In ground services such as fibre optics, electrical cables, gas lines, water mains, sewer, etc.

• Ground/soil conditions.

• Water level in and around the structure.

2.7.2 Maintenance Planning/Frequency Recommended maintenance is discussed in the Operation and Maintenance Manual. The unit will require maintenance whenever the stop valve is actuated. Rocla recommends the unit to be frequently inspected during the first year of operation approximately once per month. Based on observation of the rate of accumulation of hydrocarbons on the water surface and sediment in the sump, maintenance staff should be able to determine the maintenance interval. The optional ecoWarn

TM

accessory may be used to assist in determining maintenance frequency.

3.0 ecoSepTM Oil-water Separator


The Rocla ecoSepTM

oil-water separator is a below grade device that permanently separates oil from water. The system provides a cost effective, highly efficient elimination of sediment and hydrocarbons from point source run-off and non-point source in stormwater. The system is design to continuously separate and automatically respond to spills of hydrocarbons and other light liquids. The ecoSep

TM

oil-water separator is normally supplied as two precast concrete chambers fitted with internal components, refer to Figure 4. The system is commonly positioned downstream of a designated hydrocarbon source. The ecoSep

TM

components are all manufactured from stainless steel and incorporate a coalescing media separator, an oil storage chamber and an ecoStop

TM

spill control valve.



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Figure 4: ecoSep

TM

Oil-water Separator The ecoSep

TM

functions using a combination of gravity settling and a coalescing media to remove free oils with a specific gravity up to 0.95 to less then 5 ppm. The two chambers used in the treatment process are designed to perform different functions. Flow enters the grit chamber after passing through a flow dissipater on the inlet which ensures that the water completely circulates within the chamber, allowing course sediment to settle to the bottom and free floating oils to rise to the surface. Water/oil mixture passes out of the grit chamber through a perforated outlet, stopping large floatable pollutants from moving into the separation chamber. The flow then passes into the separation chamber through an ecoStop

TM

spill control valve (refer to section 2.0). Gravity separation continues to occur, with a hydrocarbon layer building on the surface and fine sediment accumulation on the bottom. The outlet to the separation chamber is fitted with a coalescing media which removes free oils to less than 5 ppm. The coalescing media is manufactured from a reticular (net like) polyether-polyurethane foam, having a very high surface area to volume ratio, allowing for extremely efficient treatment.

Grit Chamber

Separation Chamber



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Benefits

� Permanently separates oil from water down to 5ppm hydrocarbons � Separates light liquids with specific gravity of less than 0.95 � Control of catastrophic spills � Water tight valve rated to 50kPa � High quality precast components � High operational reliability � Easy installation � Simple operation and maintenance � Low cost Maintenance � Predominantly automated almost eliminating human error � No power input required

Applications

� Petrol Station � Refuelling facilities � Electrical transformer and generators � Any location where Hydrocarbons are stored or transported.

3.3 Components

The separator is comprised of two precast concrete chambers fitted with internal mechanisms in the factory allowing for quickly and easily installation, refer to Figure 5.

Figure 5: ecoSep

TM

Oil-water Separator



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3.3.1 Grit Chamber The Grit chamber consists of precast concrete chamber fitted with an inlet diffuser and outlet screen, refer to Figure 6 and 7.

Figure 6: Grit Chamber Inlet Diffuser

Figure 7: Grit Chamber Perforated Outlet



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3.3.2 Separation Chamber The separation chamber consists of a large precast chamber fitted with ecoStop

TM

valve on the inlet (please refer to section 2) and an outlet module containing the coalescing media, baffles to restrict hydrocarbons from leaving the chamber and an oil storage vessel, refer to Figure 8.

Figure 8: ecoSepTM

Outlet Module

3.4 Materials

The ecoSepTM

Oil-water separator is constructed from high density precast concrete designed to withstand traffic loading in accordance with AS5100.2-2004. The internal components are manufactured from stainless steel (304 Grade) and the seal in the stop valves is manufactured from oil resistant Nitra Butyl Rubber (NBR). The coalescing media is manufactured from a reticular (net like) polyether-polyurethane foam and housed in a removable stainless steel “media pack”, refer to Figure 9.



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Figure 9: ecoSepTM

Coalescing Media

3.5 Product Range

ecoSepTM

is supplied in three standard sizes treating 3, 10 and 20 litres per second and configured in DN1500, DN1800 and DN2400 chambers respectively. For larger flow rate designs can be customised to meet the majority of requirements.


3.6.1 Unit Operation Water and light liquids entering the ecoSep

TM

are separated using three methods of treatment - sedimentation, gravity separation of hydrocarbons, and coalescing separation. As the liquid enters the Grit Chamber sedimentation and gravity separation of hydrocarbons occurs, removing a large percentage of suspended solids and free floating hydrocarbons. The liquid then passes to the separation chamber where gravity separation continues to occur. Hydrocarbon droplets too small to be removed by gravity alone are removed by the coalescing media. The coalescing media is designed to intercept oil/hydrocarbon globules greater than 20 microns with a specific gravity of 0.95 or less. Refer below to Figure 10 which gives are graphical representation of how the coalescing media works.



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Figure 10: ecoSep

TM

Coalescing Separation

The ecoSep

TM

outlet structure also contains an oil storage chamber which allows accumulated hydrocarbons to be stored. As hydrocarbons accumulate on the water surface they can be manually drawn away by opening a valve and allowing the oil to drain into an independent storage chamber. The oil passes through a piece of coalescing media on the inlet to the valve, further refining it. An optional automatic drawing off device is also available refer to Section 3.8.

3.6.2 Performance Verification The ecoSep

TM

Oil-Water separator has been designed and tested in accordance with the following specifications:

• The coalescing media is designed to intercept oil globules greater than 20 microns for oils with a specific gravity of 0.95 or less.

• The oil water separator has been tested and certified to achieve an oil removal efficiency of 5ppm for effluent oil content for non emulsified free oils in fresh water, with a specific gravity of 0.86 or less. Oil removal efficiency is based on a 5000ppm influent oil concentration, introduced at peak flow rates for a specific model.

• DIN 1999: Installations for separation of light liquids - Part 4-6: Requirements for oil/water separators.



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• EN 858-1:2002: Separator Systems For Light Liquids (e.g. Oil And Petrol) - Part 1: Principles Of Product Design, Performance And Testing, Marking And Quality Control.

3.6.3 Treatment Flow The system is designed to operate at the maximum specified flow. Any flow in excess of this may cause the float to sink and the stop valve to be actuated. This may also be caused by additional head loss associated with the higher flow rate and subsequent increased water level within the chamber. This false trigger may occur prior to the accumulated hydrocarbon layer reaching its full depth. The maximum flow capacities are shown below in Table 1.

Table 2: ecoSepTM

Flow Capacities

ecoSep Model Flow Capacity (L/sec)

NS03 3

NS10 10

NS20 20

Non-standard >20

3.7 Design Considerations

The ecoTechnic range of products is designed specifically for small catchments that are of high risk of hydrocarbon spills, which would usually be protected by bunded areas or covered zones resulting in only minimal direct rainfall run-off. When designing for an ecoSep

TM

or any other ecoTechnic product it is critical to ensure that the maximum pipe flow is catered for and all levels are carefully detailed. The units operate on the water level within the chamber so it is a necessity to ensure that the units are free drain and have no downstream head or pressure that will cause water to back up within the chamber. The depth to invert needs to be considered as each unit has a minimum depth to invert set by the maximum height position of the float. There is no maximum depth restriction on the system but it must be kept in mind that the unit needs to be maintained from the surface and needs to be accessible. For deep installations it is suggest that a working platform is used to allow maintenance workers safe and efficient access to the system if a spill occurs. The float should be keep within arms reach of the concrete cover or working platform at all times. This will ensure that when a spill occurs the float can be easily reset once the spill has been cleaned up.



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The pollutant load within the water also needs to be considered, as large pollutants and sediment may accumulate in the device and interfere with its operation. For sites with high pollutant loads, some type of upstream treatment may be required to ensure the system operates effectively. Please refer to Rocla Water Quality’s range of stormwater treatment products. The fall and pipe levels through an ecoSep

TM

are critical to its successful operation, so careful detailing is required. Installation needs to ensure that all levels and pipe orientations match the design drawings.

3.7.1 ecoSepTM

Sizing Below is a summary of considerations when selecting an ecoSep

TM

oil-water separator:

• Pipe Design Flow should match the ecoSepTM

capacity flows, and be based on a recurrence interval consistent with the minimum maintenance frequency. This will reduce the risk of premature activation of the ecoStop

TM

valve.

• Pipe Diameters for the inlet/outlet pipes are model specific.

• Depth to Pipe Invert needs to be determined how maintenance will be performed. It is also necessary to maintain the design fall through the system.







3.7.2 Maintenance Planning/Frequency Recommended maintenance is discussed in the Operation and Maintenance Manual. The unit will require maintenance whenever the stop valve is actuated.



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Rocla recommends the unit to be frequently inspected during the first year of operation approximately once per month. Based on observations rate of accumulation of hydrocarbons on the water surface and sediment in the sump, maintenance staff should be able to determine the maintenance interval. The optional ecoWarn

TM


3.8 Optional Extras

3.8.1 Automatic Draw off Device (ADD) The standard version of the ecoSep

TM

units are equipped with a manual oil draw-off, which is a valve that can be opened and closed to collect oil into the independent storage vessel. The ADD is an optional extra that can be fitted to both the ecoSep

TM

and ecoTopTM

Oil-water separators.

Figure 11: Automatic Draw off Device (ADD)

The ADD constantly removes accumulated hydrocarbons and light liquid from the water surface and stores them in the internal receptacle in the ecoSep

TM

. When being used in conjunction with an ecoTop

TM

the ADD is fitted externally. The collected oil which is free of water can be pumped out and disposed of, reducing oil disposal costs due to the low water content. The ADD can be compared to a separator within a separator. The unit works on the physical principles of the different specific gravity of oil and water. The mixture of oil and water enters the ADD through the inlet valve, which is located at the oil water interface of the separation chamber (refer to Figure 12)



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Figure 12: ADD Fitter with ecoSep Oil Storage Chamber

In the first chamber oil is once again separated from water and builds up a layer on the surface of the water. Due to the height difference (refer Figure 13) only light liquid can be discharged to the oil vessel. When the maximum level in the oil vessel is reached, a float closes the inlet valve of the ADD. The second float controls the water level in the separator and closes the inlet and outlet valve of the ADD when the water level in the separator rises. These valves ensure that the oil collected in the tank cannot be mixed with water once again.



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Figure 13: ADD Schematic Drawing

3.8.2 ecoWarn The ecoWarn is an alarm device used to monitors the depth of accumulated oil within the separator and warns operators when spills have occurred. The device user’s two probes to monitor the oil/water level within the chamber as well as the oil depth. The high level probe will activate in both oil and water and is design to warn maintenance staff when the ecoStop

TM

valve has been actuated or when the system is malfunctioning.

Figure 14: ecoWarn Schematic Drawing



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The oil alarm probe is design to activate if in contact with air or oil, therefore it is operating normally when submerged in water. The probe is 214mm in length and has two alarm functions, one when the top sensor is immersed in oil or air and another when the bottom of the probe is immersed in oil or air. By varying the location of he probe you can alter when each alarm activates. The idea being to have an indicator when oils start to accumulate and then a following alarm when it needs to be maintained. Refer to the ecoWarn

TM

operation and maintenance Manual.

4.0 ecoTop TM

Oil-water Separator


The Rocla ecoTopTM

Oil-water Separator is an above grade separator ideal for temporary point source run-off. The system is designed to be sited above ground on a level solid surface in a location close to the source of the waste. It can be moved as required but its location should take maintenance access into consideration and be as isolated as possible from the source of any mechanical emulsification. The oil-water influent may require pumping to the ecoTop

TM

vessel, in which case only positive displacement, diaphragm or screw type pumps should be used to avoid mechanical emulsification of the influent. The system is designed to continuously separate hydrocarbons and other light liquids from water using gravity separation and coalescing media, as per the ecoSep

TM

Oil-water separator.

Figure 15: ecoTop

TM

Oil-water Separator



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The ecoTopTM

is supplied as a stainless steel rectangular chamber fitted with internal baffles and coalescing media to effectively remove non-emulsified hydrocarbons from water - refer to Figure 15. The ecoTop

TM

functions using a combination of gravity settling to remove sediment and free floating oils, and a coalescing media to remove free oils with a specific gravity up to 0.95 to less then 5 ppm. The chamber is divided in half length ways by a wall which effectively lengthens the flow path between inlet and outlet. The flow initially enters through a submerged inlet and subsequently passes through a baffled chamber where sediment and large oil globules are removed via gravity. The influent then passes through a coalescing filter module which is located in the centre dividing wall. The water then continues through another baffled chamber to a submerged outlet. The first chamber can be fitted with an ecoWarn if required and the second chamber fitted with an ADD installed on the outside to allow concentrated oil to be stored in a separate vessel - refer to Figure 16.


Benefits

� Permanently separates oil from water, down to 5ppm hydrocarbons � Separates light liquids with a specific gravity of less than 0.95 � High quality stainless steel components � High operational reliability � Easy installation/relocation � Simple operation and maintenance � Low cost maintenance � Predominantly automated � No power input required in treatment process (excluding pumping)

Applications

� Temporary refuelling facilities � Oil spills � Petrol stations � Refuelling facilities � Electrical transformer and generators � Oil/Hydrocarbon storage facilities � Any location where hydrocarbons are temporarily stored or there is

insufficient depth to use an in ground device.



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4.3 Components

The separator is comprised of a 304 stainless steel vessel which is split in two creating to chambers. Each chamber contains baffles which length the flow path and aids in the gravity separation of hydrocarbons and sediment, refer to Figure 16.

Figure 16: ecoTop

TM

Oil-water Separator

4.4 Materials

The ecoTopTM

Oil-water separator is constructed from stainless steel (304 Grade). The coalescing media is manufactured from a reticular (net like) polyether-polyurethane foam and housed in a removable stainless steel “media pack” - refer to Figure 9.

4.5 Product Range

The ecoTopTM

is supplied in two standard sizes treating 3 and 10 litres per second and have the nominal pipe inlet and outlet diameters of 100 and 150mm respectively.

Automatic

Draw-off

Device

Coalescing

Media Module

Internal

Baffle

Internal

Baffle

Submerged

Inlet Inlet

Outlet



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4.6.1 Unit Operation Water and light liquids entering the ecoTop

TM

are separated using the three methods of purification - sedimentation, gravity separation of hydrocarbons, and coalescing separation. As the liquid enters the first chamber, sedimentation and gravity separation of hydrocarbons occurs, removing a large percentage of suspended solids and free floating hydrocarbons. The liquid then passes through the coalescing media into the secondary chamber, where small globules of hydrocarbons that are not easily removed by gravity are removed by the coalescing media. The coalescing media is designed to intercept oil/hydrocarbon globules greater than 20 microns with a specific gravity of 0.95 or less. The coalescing media allows these globules to accumulate and bond together on its surface until they are buoyant enough to float. Hydrocarbon storage within the ecoTop

TM

is limited to the liquid surface layer so it is recommended that an ADD is used in conjunction. Water that enters the ADD is returned back to the outlet pipe.

4.6.2 Performance Verification The ecoTop

TM

oil-water separator has been designed and tested in accordance with the following specifications:

• The coalescing media is designed to intercept oil globules greater than 20 microns with a specific gravity of 0.95 or less.

• The oil-water separator is tested and certified to achieve an oil removal efficiency of 5ppm for effluent oil content for non emulsified free oils in fresh water, with a specific gravity of 0.86 or less. Oil removal efficiency is based on a 5000ppm influent oil concentration, introduced at peak flow rates for a specific model.

• DIN 1999 - Installations for Separation of Light Liquids - Part 4-6: Requirements for Oil/water Separators.

• EN 858-1:2002 - Separator Systems for Light Liquids (e.g. Oil and Petrol) - Part 1: Principles of Product Design, Performance and Testing, Marking and Quality Control.

4.6.3 Treatment flow The system is designed to operate at the maximum specified flow and any flow in excess of this may result in a lower than specified treatment performance and the possible loss of already accumulated sediment and hydrocarbons.



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The maximum flow capacities are shown below in Table 3.

Table 3: ecoTopTM

Flow Capacities

ecoTop Model Flow Capacity (L/sec)

NT03 3

NT10 10

4.7 Design Considerations

The ecoTechnic range of products is design specifically for small catchments that are of high risk of hydrocarbon spills, therefore they have a relatively low flow capacity. When designing for an ecoTop

TM

it is critical to ensure that the maximum inflow pumped or otherwise is catered for and all levels are correct. The units operate using gravity separation therefore the flow rate and cross sectional velocity through the units is of vital importance to allow the gravitational forces to remove the buoyant hydrocarbons. It is also a necessity to ensure that the units are free drain and have no downstream head or pressure that will cause water to back up with in the chamber. In the majority of cases it will not be possible to feed the ecoTop

TM

via gravity and some degree of pumping will be required. With that in mind it is important to understand that hydrocarbons can be mechanically emulsified by impeller type pumps so it is necessary to use a positive displacement, diaphragm or screw type pump. It is important to consider the location of the unit. It requires a solid base, in a low traffic location which also allows for easy and efficient maintenance access. The pollutant load within the water also needs to be considered, as large pollutants and sediment may accumulate in the device interfere with its operation. For sites with high pollutant loads some type of upstream treatment may be required to ensure the system operates effectively. Please refer to Rocla Water Quality’s range of stormwater treatment products.

4.7.1 ecoTopTM

Sizing Below is a summary of aspects that need to be considered when selecting an ecoTop

TM

Oil-water separator:



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• Pipe Design Flow should match the stated flow capacity and be based on the maximum pump duty.

• Location, when locating any stormwater treatment device it is important to consider its location in relation to other infrastructure. It is also necessary to consider the location of the unit with regard to maintenance. Below is a brief list of location considerations that should be considered:

• Access to the site for both machinery and personnel, to conduct maintenance, including OH&S considerations in both dry and wet conditions.

• Location of surrounding infrastructure, such as buildings so as to not restrict fire or emergency access etc.

4.7.2 Maintenance Planning/Frequency Recommended maintenance is discussed in the Operational and Maintenance Manual referenced in Appendix B. Rocla recommends the unit to be frequently inspected during the first year of operation approximately once per month. Based on observations rate of accumulation of hydrocarbons on the water surface and sediment in the sump, maintenance staff should be able to determine the maintenance interval.

4.8 Optional Extras

As per the ecoSepTM

the ecoTopTM

can be fitted with both an ADD and ecoWarn, refer to Section 3.8 for more information.

5.0 ecoLineTM Oil-water Separator


The Rocla ecoLineTM

range of Oil-water Separators offers both above and below grade separators known as ecoLine

TM

–a and ecoLineTM

-b. Both units are designed to be a simpler and cost effective alternative to the ecoTop

TM

and ecoSep

TM

units, while still providing and extremely high level of performance.

5.2 ecoLineTM

-a

The ecoLineTM

-a is an above grade oil-water separator, using a combination of gravity separation and coalescing media to remove hydrocarbons and light liquids down to 5 ppm. The units are designed to be used at small facilities that are frequently hots spots for hydrocarbon runoff but can not economically justify the construction and purchase price for a below grade unit.



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The units are oval in shape and are constructed from High Density Polyethylene (HDPE) - refer to Figure 17 below.

Figure 17: ecoLineTM

– a Oil-water Separator The sediment and solids are pre-treated by other means and the runoff is fed into the unit via gravity or pumping (typically using a positive displacement or diaphragm pump) through a submerged inlet pipe. The separation process relies on the principle that light liquids have a lower specific gravity than water and thus float on the water surface. The fine residual oil droplets that are too small to be separated by gravity in their own right are accumulated into bigger droplets on the surface of the coalescing media until they are of sufficient size and buoyancy to rise to the surface. As per the ecoSep

TM

and ecoTopTM

separators.

5.2.1 Benefits and Applications

Benefits

� Permanently separates oil from water down to 5ppm � Separates light liquids with a specific gravity of less than 0.95 � Manufactured from HDPE � High operational reliability � Transportable � Simple operation and maintenance � No power required for treatment (excluding pumping)



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Applications

� Temporary locations � Petrol Stations � Refuelling facilities � Electrical transformers and generators � Oil/Hydrocarbon storage facilities � Any location where hydrocarbons are stored or transported.

5.2.2 Components

ecoLineTM

-a is comprised of an oval chamber constructed from HDPE fitted with an internal baffle and removable coalescing media cartridge also constructed from HDPE - refer to Figure 18. As per other ecoTechnic products the coalescing media is manufactured from reticular (net like) polyurethane foam.

Figure 18: ecoLineTM

– a Oil-water Separator



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5.2.3 Product Range

The ecoLineTM

–a is supplied in three standard sizes treating 1.5, 3 and 6 litres per second. Larger units treating greater flow rates are available upon request.

Table 4: ecoLineTM

–a Flow Capacities

ecoLine - a Model Flow Capacity (L/sec)

NA1.5 1.5

NA3 3

NA6 6

5.2.4 Product Performance

The ecoTechnic range of products is design specifically for small catchments that are of high risk of hydrocarbon spills, therefore they have a relatively low flow capacity. When designing in an ecoLine

TM

- a it is critical to ensure that the maximum inflow pumped or otherwise is catered for and all levels are correct. The units operate using gravity separation therefore the flow rate and cross sectional velocity through the units is of vital importance to allow the gravitational forces to remove the buoyant hydrocarbons. It is also a necessity to ensure that the units are free draining and have no downstream head or pressure that will cause water to back up with in the chamber. In the majority of cases it will not be possible to feed the ecoLine

TM

- a via gravity and some degree of pumping will be required. With that in mind it is important to understand that hydrocarbons can be mechanically emulsified by impeller type pumps so it is necessary to use a positive displacement, diaphragm or screw type pump. It is important to consider the location of the unit as it requires a solid base in an out of the way location which also allows for easy and efficient maintenance access. The pollutant load within the water also needs to be considered, as large pollutants and sediment may accumulate in the device and interfere with its operation. For sites with high pollutant loads, some type of upstream treatment may be required to ensure the system operates effectively. Please refer to Rocla Water Quality’s range of stormwater treatment products.



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5.2.4.1 Performance Verification The ecoLine

TM

- a Oil-Water separator has been designed and tested in accordance with the following specifications:

• The coalescing media is designed to intercept oil globules greater than 20 microns and with a specific gravity of 0.95 or less.

• The oil water separator is tested and certified to achieve an oil removal efficiency of 5ppm for effluent oil content for non emulsified free oils, in fresh water, with a specific gravity of 0.86 or less. Oil removal efficiency is based on a 5000ppm influent oil concentration, introduced at peak flow rates for a specific model.

• DIN 1999 : Installations for separation of light liquids - Part 4-6 : Requirements for oil/water separators.

• EN 858-1:2002 : Separator Systems For Light Liquids (e.g. Oil And Petrol) - Part 1: Principles Of Product Design, Performance And Testing, Marking And Quality Control.

5.2.5 ecoLineTM

– a Sizing

Below is a summary of aspects that need to be considered when selecting an ecoLine

TM

– a Oil-water separator:

• Pipe Design Flow requires careful selection to ensure that flow rate entering the unit does not exceed the ecoLine

TM

–a capacity.



• Access to the site for both machinery and personnel, to conduct maintenance, including OH&S considerations in both dry and wet conditions.

• Location of surrounding infrastructure, such as buildings so as to not restrict fire or emergency access etc.


Recommended maintenance is discussed in the Operational and Maintenance Manual. Rocla recommends the unit be frequently inspected during the first year of operation approximately once per month. Based on observations rate of accumulation of hydrocarbons on the water surface and sediment in the sump, maintenance staff should be able to determine the maintenance interval.



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5.3 ecoLineTM

- b

ecoLineTM

– b is a below grade device that permanently separates oil from water. The system provides a cost effective, high efficient elimination of sediment and hydrocarbons from point source run-off and non-point source in stormwater. The system is design to continuously separate and automatically respond to spills of hydrocarbons and other light liquids. The ecoLine

TM

– b Oil-water separator is normally supplied as a single precast concrete chamber fitted with internal components with an optional upstream sedimentation chamber - refer to Figure 19. The system is commonly positioned downstream of a designated hydrocarbon source. The ecoLine

TM

– b internal components are all manufactured from a combination of stainless steel and HDPE and incorporate a coalescing media separator, stainless steel baffles and a HDPE spill control device.

Figure 19: ecoSepTM

Oil-water Separator The ecoLine

TM

- b functions using a combination of gravity settling to remove sediment and free floating oils, and a coalescing media to remove free oils with a specific gravity up to 0.95 to less then 5 ppm.



- 35 -

The influent enters the chamber through a submerged inlet pipe and gravity separation of sediment and hydrocarbons occurs. As the flow moves toward the outlet it is deflected around a baffle prior to passing through a coalescing media panel. As per other ecoTechnic products the coalescing media causes the hydrocarbons to form large globules that are capable of floating to the water surface. The liquid then passes over another baffle and discharges from the chamber through a submerged standpipe. The outlet standpipe is fitted with a float and compression sealing gasket which will isolate the device in case an oil spill occurs or due to lack of maintenance - refer Figure 20.

Figure 20: ecoLine

TM

- b Spill Control Device

5.3.1 Benefits and Applications

Benefits � Permanently separates oil from water, down to 5ppm. � Separates light liquids with a specific gravity of less than 0.95 � Spill control � High quality precast components � High operational reliability � Easy installation � Simple operation and maintenance � Low cost maintenance � Predominantly automated � No power required

Applications

� Petrol stations � Refuelling facilities � Electrical transformer and generators � Oil/Hydrocarbon storage facilities � Any location where hydrocarbons are stored or transported.



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5.3.2 Components The standard ecoLine

TM

- b is comprised of a precast concrete chamber factory fitted with internal mechanisms so it can be quickly and easily installed - refer to Figure 21. If high sediment loads are predicted, a sedimentation chamber or other Rocla Water Quality product can be used to pre-treat the water.

The outlet treatment module is constructed from Stainless steel and HDPE and includes a coalescing media cartridge as per other ecoTechnic products. The outlet pipe is made from HDPE and therefore a pipe connection suitable for HDPE pipe should be used.

Figure 21: ecoLine

TM

- b Oil-water Separator

5.3.3 Materials

The ecoLineTM

– b Oil-water separator is constructed from high density precast concrete designed to withstand traffic loading in accordance with AS5100.2-2004. The internal components are manufactured from stainless steel (304 Grade) and HDPE. The coalescing media is manufactured from a reticular (net like) polyether-polyurethane foam and housed in a removable stainless steel “media pack” - refer to Figure 9.



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5.3.4 Product Range

ecoLineTM

- b is supplied in three standard sizes treating 3, 10 and 20 L/sec and is configured in DN1200, DN1950 and DN2400 chambers respectively. Upon request a one single outlet composite unit can be manufactured to treat 40, 50 and 70 L/sec. For more information on these larger units please contact Rocla Water Quality.

5.3.5 Performance Verification

The ecoLineTM

– b Oil-Water separator has been designed and tested in accordance with the following specifications:

• The coalescing media is designed to intercept oil globules greater than 20 microns with a specific gravity of 0.95 or less.

• The oil water separator is tested and certified to achieve an oil removal efficiency of 5ppm for effluent oil content of non emulsified free oils in fresh water, with a specific gravity of 0.86 or less. Oil removal efficiency is based on a 5000ppm influent oil concentration, introduced at peak flow rates for a specific model.

• DIN 1999 : Installations for separation of light liquids - Part 4-6 : Requirements for oil/water separators.

• EN 858-1:2002 : Separator Systems For Light Liquids (e.g. Oil And Petrol) - Part 1: Principles Of Product Design, Performance And Testing, Marking And Quality Control.

5.3.6 Treatment flow

The system is design to operate at the maximum specified flow, as any flow in excess of this may cause the float to sink and the stop valve to be actuated. The maximum flow capacities are shown below in Table 5.

Table 5: ecoLineTM

– b Flow Capacities

ecoLine - b Model Flow Capacity (L/sec)

NG03 3

NG10 10

NG20 20

Non-standard 40, 50, 70



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5.3.7 Design Considerations

The ecoTechnic range of products is design specifically for small catchments that are of high risk of hydrocarbon spills, therefore they have a relatively low flow capacity. Below is a summary of aspects that need to be considered when selecting an ecoLine

TM

– b Oil-water separator:


• Depth to Pipe Invert needs to be determined based on how maintenance will be performed. Minimum depths apply.

• Pipe Design Flow should match the stated flow capacity and be based on a recurrence interval consistent with the minimum maintenance frequency. This will reduce the risk of premature activation of the float valve.








Recommended maintenance is discussed in the Operation and Maintenance Manual. The unit will require maintenance whenever the stop valve is actuated. Rocla recommends the unit to be frequently inspected during the first year of operation approximately once per month. Based on observation of the rate of accumulation of hydrocarbons on the water surface and sediment in the sump, maintenance staff should be able to determine the maintenance interval. The optional ecoWarn

TM




- 39 -

6.0 Product Guide

6.1 ecoStopTM

6.1.1 Description

The Rocla ecoStopTM

Spill control system is a secure and reliable hydrocarbon spill management system suitable for any site with a potential for spills. The system is designed to continuously monitor and automatically respond to spills of hydrocarbons and other light liquids.

6.1.2 Features

• High quality components

• Self actuating process

• Valve rated to 5 metres of head

• Easy Installation

• Effective on all light liquids

6.1.3 General Requirements

System components:

• Precast concrete chamber with cast in base

• Concrete chamber and risers to match finished surface levels

• Heavy duty cast iron cover and frame, supplied in a concrete surround when possible

• For deep installations a working platform is required

• Internal components to be manufactured using 304 grade Stainless Steel

6.1.4 Specifications

6.1.4.1 ecoStopTM

100 Technical Details

• Chamber Diameter: DN1200

• Inlet Pipe Diameter: DN100 PVC

• Outlet Pipe Diameter: DN100 PVC

• Max Flow rate: 3.0 L/sec

• Min DTI at outlet: 590 mm

• Nom Oil Storage depth: 230 mm

• Total Volume of Unit: 1600 L

Transport & Handling

The ecoStopTM

100 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to installation on site.



- 40 -

Refer below for the safe lifting equipment required to install the ecoStopTM

100 Chamber. Table 6.1: ecoStop

TM 100 Lifting Requirements

Component Lifting Requirements Approximate Component Mass

Base and Chamber 3 x 2.5t Swift-lifts 1800 kg Concrete Surround 2 x 1.3t Swift-lifts 500 kg Risers 3 x 2.5t Swift-lifts Varies - typically 700 kg

per meter height

6.1.4.2 ecoStopTM







• Nom Oil Storage Depth: 230 mm



The ecoStopTM

150 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting equipment required to install the ecoStop

TM




Base and Chamber 3 x 2.5t Swift-lifts 3300 kg

Concrete Surround 2 x 1.3t Swift-lifts 800 kg

Risers 3 x 2.5t Swift-lifts Varies - typically 1050 kg per meter height

6.1.4.3 ecoStopTM







• Nom Oil Storage Depth: 230 mm




- 41 -


The ecoStopTM

200 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting equipment required to install the ecoStop

TM




Base and Chamber 3 x 2.5t Swift-lifts 5000 kg Concrete Surround 3 x 1.3t Swift-lifts 1500 kg Risers 3 x 2.5t Swift-lifts Varies - typically 1500 kg

per meter height

6.1.5 Installation Considerations

Installing the ecoStopTM

is as quick and easy as installing a standard precast stormwater pit or sewer access chamber. All necessary sealants and fixings for the assembly are provided by Rocla as part of the product. The system is to be installed in strict accordance with the site plans and Rocla’s site specific general arrangement drawings, and handling, storage and installation instructions. The contractor is responsible for installing the product using the correct equipment and sealing all necessary on-site connections as per instructions. The precast concrete structure should be set on a granular or compacted gravel sub-base in accordance with local authority requirements for standard stormwater pit installation. For projects that have critical finished surfaces level or cross-fall requirements (such as sealed parking lot and roadways, etc) a standard converter slab with a cast iron cover and frame are provided. This allows the contractor to construct an insitu custom surround meeting the desired surface level and cross-fall requirements of the site. For more information please refer to the Installation and Handling Manual.

6.1.6 Product Support

Rocla offers a wide range of support services, including advice on selecting the appropriate stormwater treatment device, site specific drawings, general engineering advice and product training.



- 42 -

For further information or assistance contact your nearest Rocla sales or customer service representative on 131 004.

6.1.7 Other References

• ecoStopTM

Product Brochure

• Product General Arrangement Drawing

• Installation and Handling Guide

• Operation and Maintenance Manual

6.2 ecoSepTM

6.2.1 Description

The Rocla ecoSepTM

Oil-water Separator is a below grade device that permanently separates oil from water. The system provides a cost effective, high efficient elimination of sediment and hydrocarbons from point source run-off and non-point source in stormwater. The system is design to continuously separate and automatically respond to spills of hydrocarbons and other light liquids.

6.2.2 Features



• Valve rated to 5 metres of head

• Easy Installation


• Effluent quality of less than 5 ppm

• Offline oil storage


System components:

• Precast concrete chamber with cast in base

• Concrete chamber and risers to match finished surface levels

• Heavy duty cast iron cover and frame, supplied in a concrete surround when possible

• For deep installations a working platform is required

• Internal to be manufactured using 304 grade Stainless Steel



- 43 -


6.2.4.1 ecoSepTM

NS03 Technical Details

• Grit Chamber Diameter: DN1050

• Separation Chamber Diameter: DN1500





• Nom Oil Storage Depth on water surface 230 mm

• Volume of Oil storage vessel: 100 L

• Total Volume of Unit (Sed and Sep): 2700 L


The ecoSepTM

NS03 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting equipment required to install the ecoSep

TM

NS03 Chamber. Table 6.4: ecoSep

TM NS03 Lifting Requirements


Grit Chamber & Base 3 x 1.3t Swift-lifts 1400 kg NS03 Chamber & Base 3 x 2.5t Swift-lifts 3300 kg Concrete Surround 4 x 2.5t Swift-lifts 1500 kg Grit Risers 3 x 1.3t Swift-lifts 750 kg per meter height Main Risers 3 x 2.5t Swift-lifts 1050 kg per meter height

6.2.4.2 ecoSepTM









• Volume of Oil Storage Vessel: 192 L

• Total Volume of Unit (Sed and Sep): 4650 L



- 44 -


The ecoSepTM

NS10 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting equipment required to install the ecoSep

TM




Grit Chamber & Base 3 x 2.5t Swift-lifts 2000 kg NS10 Chamber & Base 3 x 2.5t Swift-lifts 4250 kg Concrete Surround 4 x 2.5t Swift-lifts 1750 kg Grit Risers 3 x 2.5t Swift-lifts 900 kg per meter height Main Risers 3 x 2.5t Swift-lifts 1450 kg per meter height

6.2.4.3 ecoSepTM





• Outlet Pipe Diameter: DN225 PVC (Inlet and outlet pipes to the separation unit are DN200 PVC - as this is not a common size used in Australia appropriate reducers are supplied for DN225)




• Volume of oil storage vessel: 95.5 L

• Total Volume of Unit (Sed and Sep): 10,000 L


The ecoSepTM

NS20 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting details to install the ecoSep

TM




Grit Chamber & Base 3 x 2.5t Swift-lifts 3250 kg NS20 Chamber & Base 3 x 5.0t Swift-lifts 8750 kg Concrete Surround 3 x 2.5t Swift-lifts 4000 kg Grit Risers 3 x 2.5t Swift-lifts 1050 kg per meter height

Main Risers 3 x 5.0t Swift-lifts 2700 kg per meter height



- 45 -


Installing the ecoSepTM

is as quick and easy as installing a standard precast stormwater pit or sewer access chamber. All necessary sealants and fixings for the assembly are provided by Rocla as part of the product. The system is to be installed in strict accordance with the site plans and Rocla’s site specific general arrangement drawings, and handling, storage and installation instructions. The contractor is responsible for installing the product using the correct equipment and sealing all necessary on-site connections as per instructions. The precast concrete structure should be set on a granular or compacted gravel sub-base in accordance with local authority requirements for standard stormwater pit installation. For projects that have critical finished surfaces level or cross-fall requirements (such as sealed parking lot and roadways, etc) a standard converter slab with a cast iron cover and frame are provided. This allows the contractor to construct an insitu custom surround meeting the desired surface level and cross-fall requirements of the site. For more information please refer to the Installation and Handling Manual.


Rocla offers a wide range of support services, including advice on selecting the appropriate stormwater treatment device, site specific drawings, general engineering advice and product training. For further information or assistance contact your nearest Rocla sales or customer service representative on 131 004.


• ecoSepTM

Product Brochure




6.3 ecoTop

6.3.1 Description

The Rocla ecoTopTM

Oil-water Separator is an above grade separator ideal for temporary point source run-off. The system is designed to sit above ground on a level stable surface in a location close to the source of the waste. It can be



- 46 -

moved if and when required but its location should consider maintenance access and be as isolated as possible from sources of mechanical emulsification.

6.3.2 Features



• Easy Installation/Portable




System components:

• The complete system is manufactured using 304 Grade Stainless Steel


6.3.4.1 ecoTopTM

NT03 Technical Details

• Chamber Dimensions: 1100 x 820 x 1200 mm (L x W x H)

• Inlet Pipe Outside Diameter: 110 mm Stainless Steel

• Outlet Pipe Outside Diameter: 160 mm Stainless Steel




The ecoTopTM

NT03 is packaged for transport by Rocla at their factories and is supplied to site on truck and should be lifted and handled using appropriate lifting equipment. Refer below for the safe lifting details to install the ecoTop

TM

NT03 Chamber. Table 6.7: ecoTop

TM NT03 Lifting Requirements


Treatment Chamber Slings or Forklift 170 kg

6.3.4.2 ecoTopTM

NT10 Technical Details

• Chamber Dimensions: 1584 x 832 x 1600 (L x W x H)

• Inlet Pipe Outside Diameter: 160 mm Stainless Steel

• Outlet Pipe Outside Diameter: 160 mm Stainless Steel





- 47 -


The ecoTopTM

NT10 is packaged for transport by Rocla at their factories and is supplied to site on truck and should be lifted and handled using appropriate lifting equipment. Refer below for the safe lifting details to install the ecoTop

TM

NT10 Chamber. Table 6.8: ecoTop

TM NT10 Lifting Requirements




Installing the ecoTopTM

NT10 is quick and easy as with all necessary sealants and fixings provided by Rocla as part of the product. The system is to be installed in strict accordance with the site plans and Rocla’s site specific general arrangement drawings, handling, storage and installation instructions. The contractor is responsible for installing the product using the correct equipment and sealing all necessary on-site connections as per instructions. For more information please refer to the Installation and Handling Manual.




• ecoTopTM

Product Brochure


• Installation and handling Guide




- 48 -

6.4 ecoLine - a

6.4.1 Description

The ecoLineTM

-a is an above grade oil-water separator, using a combinations of gravity separation and coalescing media to remove hydrocarbons and light liquids down to 5 ppm. The units are design to be used at small facilities that are frequently hots spots for hydrocarbon runoff but can not economically justify the construction and purchase price for a below grade unit.

6.4.2 Features



• Easy Installation/Portable




System components:

• The system is manufactured from High Density Polyethylene (HDPE)


6.4.4.1 ecoLineTM

– a NA1.5 Technical Details

• Chamber Dimensions: 1350 x 820 x 900 mm (L x W x H)

• Inlet Pipe Diameter: DN100 PE

• Outlet Pipe Diameter: DN100 PE


• Total Volume of Unit: 770 L (below inlet I.L.)


The ecoLineTM

NA1.5 is packaged for transport by Rocla and is supplied as a fully self contained HDPE oval chamber, making it easy to handle and rapid to install on site. Refer below for the safe lifting details to install the ecoLine

TM

NA1.5 Chamber. Table 6.9: ecoLine

TM –a NA1.5 Lifting Requirements





- 49 -

6.4.4.2 ecoLineTM

– a NA3 Technical Details

• Chamber Diameter: 1600 x 885 x 1080 mm (L x W x H)






The ecoLineTM

– a NA3 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting details to install the ecoLine

TM

– a NA3 Chamber. Table 6.10: ecoLine

TM- a NA3 Lifting Requirements



6.4.4.3 ecoLineTM

– a NA6 Technical Details

• Chamber Diameter: 1850 x 950 x 1260 mm (L x W x H)

• Inlet Pipe Diameter: 150 mm PE

• Outlet Pipe Diameter: 150 mm PE




The ecoLineTM

– a NA6 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting details to install the ecoLine

TM

– a NA6 Chamber. Table 6.11: ecoLine

TM– a NA6 Lifting Requirements




Installing the ecoLineTM

– a is quick and easy as all necessary sealants and fixings are provided by Rocla as part of the product.



- 50 -

The system is to be installed in strict accordance with the site plans and Rocla’s site specific general arrangement drawings, handling, storage and installation instructions. The contractor is responsible for installing the product using the correct equipment and sealing all necessary on-site connections as per instructions. For more information please refer to the Installation and Handling Manual.




• ecoLineTM

– a Product Brochure




6.5 ecoLine - b

6.5.1 Description

The ecoLineTM

-b is a below grade modular oil-water separator, using a combinations of gravity separation and coalescing media to remove hydrocarbons and light liquids down to 5 ppm. The units are designed to be used at small facilities that are frequently hots spots for hydrocarbon runoff with the modular layout requiring less footprint for new installations or retro-fitted into existing stormwater infrastructure.

6.5.2 Features

• High quality stainless steel components


• Easy installation with small footprint

• Fully scalable using modular components





- 51 -


System components:

• The system is manufactured from 304 Grade Stainless Steel

• Filter cartridges are interchangeable with ecoSep models


6.5.4.1 ecoLineTM

– b NG03 Technical Details






• Nom Oil Storage: 115 L



The ecoLineTM

– b NG03 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, allowing easy handling and rapid assembly on site. Refer below for the safe lifting details to install the ecoLine

TM

– b NG03 Chamber. Table 6.12: ecoLine

TM NG03 Lifting Requirements


Base and Chamber 3 x 2.5t Swift-lifts 1800 kg Concrete Surround 2 x 1.3t Swift-lifts 500 kg Risers 3 x 2.5t Swift-lifts 600 kg per meter height

6.5.4.2 ecoLineTM











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The ecoLineTM

– a NG10 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting details to install the ecoStop

TM

NG10 Chamber. Table 6.13: ecoLine

TM- b NG10 Lifting Requirements


Base and Chamber 3 x 5.0t Swift-lifts 5400 kg

Concrete Surround 3 x 2.5t Swift-lifts 1950 kg

Risers 3 x 5.0t Swift-lifts 1770 kg per meter height

6.5.4.3 ecoLineTM










The ecoLineTM

– b NG20 is packaged for transport by Rocla at their factories and is supplied fitted into a pre-cast concrete chamber, making them easy to handle and rapid to assemble on site. Refer below for the safe lifting details to install the ecoLine

TM

– b NG20 Chamber. Table 6.14: ecoLine

TM– b NG20 Lifting Requirements


Base and Chamber 3 x 5.0t Swift-lifts 8500 kg Concrete Surround 3 x 2.5t Swift-lifts 4000 kg Risers 3 x 5.0t Swift-lifts 2600 kg per meter height


Installing the ecoLineTM

– b is as quick and easy as installing a standard precast stormwater pit or sewer access chamber. All necessary sealants and fixings for the assembly are provided by Rocla as part of the product.



- 53 -

The system is to be installed in strict accordance with the site plans and Rocla’s site specific general arrangement drawings, and handling, storage and installation instructions. The contractor is responsible for installing the product using the correct equipment and sealing all necessary on-site connections as per instructions. The precast concrete structure should be set on a granular or compacted gravel sub-base in accordance with local authority requirements for standard stormwater pit installation. For projects that have critical finished surfaces level or cross-fall requirements (such as sealed parking lot and roadways, etc) a standard converter slab with a cast iron cover and frame are provided. This allows the contractor to construct an insitu custom surround meeting the desired surface level and cross-fall requirements of the site. For more information please refer to the Installation and Handling Manual.




• ecoLineTM

– b Product Brochure




7.0 Product Integration The range of ecoTechnic oil-water separators can be used in conjunction with a range of other Rocla Water Quality products to meet required stormwater quality and quantity outcomes. Other Rocla Water Quality products that may be used in conjunction with the ecoTechnic range are:

• CDS Technologies

• CleansAll Gross Pollutant Trap

• Downstream Defender Oil and Sediment Separators

• First Defense Oil and Sediment Separators

• Up-Flo Fluidised bed filter



- 54 -

• Enviss, surface filtration

• ecoRain, Rainwater Utilisation System

• Rocla precast OSD system

• Plastream Storage and Detention System

• Hydro-Brake, flow regulators

• Water Level Controller Contact Rocla for more information on the above products and their applications.

8.0 Product Support Additional information on all Rocla Water Quality products is available from your local Rocla sales office. Rocla Engineering’s professional engineers work closely with authorities, consultants, industry and developers. They offer a full technical support service and can advice on the design of stormwater treatment and stormwater management schemes. Customised product application design (PAD) can be generated for all Rocla Water Quality devices, illustrating how individual products can be used together and in conjunction with other treatment measures to form a treatment train. Additionally, experienced Rocla staff is available for general or project-specific training and technical seminars. Standard engineering drawings, specifications and product manuals are available from the Rocla website.


Version 1.3 – August 2012

- 55 -

9.0 Specification Table Table 9.1 ecoStop

TM Specification Table

Product Model Code Nom Flow

L/sec Inlet DN

mm Outlet DN

mm Outlet Min. DTI

mm Chamber DN

mm

Nom Oil Storage

L

Min. Operating Volume

L

ecoStop

100 ECS03 3 100 100 590 1200 260 1600

150 ECS10 10 150 150 660 1500 400 2900

200 ECS20 20 225 (200) 225 (200) 820 1800 580 3950

Table 9.2 ecoSep


Product Model Code Max Flow L/sec

Inlet DN

Outlet DN

Outlet Min. DTI mm

Grit Chamber

DN

Main Chamber

DN

Offline Oil Storage

L

Nom Oil Storage

L

Min. Operating Volume

L

ecoSep

NS03 ECE03 3 100 100 590 1050 1500 102.5 502.5 2700

NS10 ECE10 10 150 150 660 1200 1800 192 772 4650

NS20 ECE20 20 225 (200) 225 (200) 820 1500 2400 95.5 1130 10000



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Table 9.3 ecoTopTM

Specification Table

Product Model Code Max Flow

L/sec Inlet DN

mm Outlet DN

mm Chamber Dimensions

mm (L x W x H)

Operating Volume

L

ecoTop NT03 ECT03 3 110 (OD SS)

160 (OD SS)

1100 x 820 x 1200 650

NT10 ECT10 10 160 (OD SS) 160 (OD

SS) 1704 x 832 x 1600 1425

Table 9.4 ecoLine-a



L/sec Inlet DN

mm Outlet DN

mm Chamber Dimensions

mm (L x W x H)

Operating Volume

L

ecoLine-a

NA1.5 ECLA015 1.5 100 (PE) 100 (PE) 1350 x 820 x 900 770

NA3 ECLA030 3 100 (PE) 100 (PE) 1600 x 885 x 1080 1220

NA6 ECLA060 6 150 (PE) 150 (PE) 1850 x 950 x 1260 1720

Table 9.5 ecoLine-b



L/sec Inlet DN

mm Outlet DN

mm

Outlet Min. DTI

mm

Chamber DN mm

Nom Oil Storage

L

Operating Volume

L

ecoLine-b

NG03 ECLB030 3 100 (PE) 100 (PE) 520 1200 115 1100

NG10 ECLB100 10 150 (PE) 150 (PE) 590 1950 680 2700

NG20 ECLB200 20 200 (PE) 200 (PE) 720 2400 1000 6000



- 57 -

References

Morquecho, R., R. Pitt, S. Clark. Pollutant Associations with Particulates in Stormwater.

World Water & Environmental Resources Congress, ASCE/EWRI/ Anchorage. Alaska.

May 15-19, 2005. January 2005.

Taylor, G., Fletcher, T., Wong, T., Breen, P., & Duncan, H. Nitrogen composition in

urban runoff-implications for stormwater management. Water Research



- 58 -

Appendix A – General Arrangement Drawings Table A1 – ecoTechnic Drawing Schedule

Drawing Name Drawing No.

ecoSep NS03 General Arrangement – 590 to 750 DTI D218113











- 59 -

Appendix B – Operational and Maintenance Manual



- 60 -

Appendix C – Installation and Handling Guide



- 61 -

Appendix D – ecoWarnTM

Operation and Maintenance Manual

ecotechnic technical manual

Documents