300m3day.pdf

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Environmental Equipment Company Ltd

Environmental Equipment Company LTD.

P .O. BOX 30655 AL KHOBAR SAUDI ARABIA

T: + 966 845 6931, 6933 | F: + 966 8945 6932 | W: etch2o.com | C. R. No 2051037486

Date: 18.03.2014

Proposal: Supply installation and commissioning ofReverse osmosis Plant

Capacity: 300 m3/day.

Client:

Hassan Al Shaik

ETCH2O COMMERCIAL QUOTE: 2013-AR-120(R1)

COUNTRY SAUDI ARABIA

EEC HIGH-SPEED BIO TEC

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INTRODUCTION

General Introduction

Government Agencies are always looking to find lower cost solutions to the problem ofmeeting higher water quality standards. Cost issues such as water and treatment plant

design, operation cost, and manpower requirements all influence how the Government

Agency will deal with water and wastewater treatment. This is a challenging time to findinnovative low cost engineering solutions with little down side risk. ETCH2O has designed

and produced a very successful range of High Speed Biotech Systems to help you provide

simple low-cost solutions to meet the most stringent water and wastewater standards.

WASTEWATER TREATMENT INNOVATION FROM EEC GLOBAL

EEC was founded in 1982 with approximately 5,000 environmental protection systemsinstalled with clients in more than 45 countries. ETCH2O would like to work with you to

provide a "Total Solution" with a single system or a combination of systems to satisfy yourspecific need. ETCH2Ohigh quality bio systems are fully automatic, extremely reliable, andare selected by high end clients and military around the world.

Our Engineering staff, which includes Environmental, Mechanical, Civil, and ElectricalEngineers, is able to provide a turnkey project on time and within the allocated budget. With

the assistance of our certified technicians, our engineers ensure the projects execution and

performance will always meet or exceed the required quality standards.

With a focus on customer needs and satisfaction as well as the realization of the importance

of a continuously operating plant, our teams of customer service professionals ensure roundthe clock support to all our clients. Our customer service technicians are dedicated torestoring plant operation within 24 hours minimizing the plant downtime.

According to our motto there is always room for improvement, ETCH2O is dedicated tocontinuous product, and process development. Our training programs emphasize technical

know-how, and continuous development, which are evident through our work.

We look forward to hearing from you and please feel free to contact us if you have anyquestions.

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INTRODUCTIONTO REVERSE OSMOSIS:

PROCESS DESCRIPTION

The phenomenon of osmosis occurs when pure water flows from a dilute saline solution

through a membrane into higher concentrated saline solution. The phenomenon of osmosis is

illustrated in Figure below. A semi permeable membrane is placed between twocompartments. Semi permeable means that the membrane is permeable to some species,

and not permeable to others. Assume that this membrane is permeable to water, but not tosalt. Then, place a salt solution in one compartment and pure water in the other

compartment. The membrane will allow water to permeate through it to either side. But salt

cannot pass through the membrane. As a fundamental rule of nature, this system will try toreach equilibrium. That is, it will try to reach the same concentration on both sides of the

membrane. The only possible way to reach equilibrium is for water to pass from the purewater compartment to the salt-containing compartment, to dilute the salt solution. Figure

also shows that osmosis can cause a rise in the height of the salt solution. This height willincrease until the pressure of the column of water (salt solution) is so high that the force of

this water column stops the water flow. The equilibrium point of this water column height in

terms of water pressure against the membrane is called osmotic pressure. If a force isapplied to this column of water, the direction of water flow through the membrane can bereversed. This is the basis of the term reverse osmosis. Note that this reversed flow

produces pure water from the salt solution, since the membrane is not permeable to salt.

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Reverse Osmosis In Practice

With a high pressure pump, pressurized saline feed water is continuously pumped to themodule system. Within the module, consisting of a pressure vessel (housing) and amembrane element, the feed water will be split into a low saline product, called permeateand a high saline brine, called concentrate or reject. A flow regulating valve, called

concentrate valve, controls the percentage of feed water that is going to the concentrate

stream and the permeate which will be obtained from the feed. In the case of a spiral woundmodule consisting of a pressure vessel and several spiral wound elements, pressurized waterflows into the vessel and through the channels between the spiral windings of the element.

Up to seven elements can be connected together within a pressure vessel. The feed water

becomes more and more concentrated and will enter the next element, and at last exits fromthe last element to the concentrate valve where the applied pressure will be released.

Permeate of each element will be collected in the common permeate tube installed in the

centre of each spiral wound element and flows to a permeate collecting pipe outside of thepressure vessel.

The feed water shall be drawn by the booster pump from the client raw water tank by thefilter feed pump and chlorinated before fed to pre-treatment filtration.

Media filtration is included having Gravel and Sand. Filtration will be manually controlled forthe operation and backwashing and the filter is expected to be washed once per day.

Pressure gauges are provided to indicate when backwashing is required.The filtered water is De-Chlorinated with sodium meta bisulphite before feeding the

membranes.

After pre-treatment the water shall comply with guidelines for feeding permeators namely,the SDI (Silt Density Index) is less than 3. There shall be no chlorine present and the

dissolved iron should be less than 0.03 mg/l.

In addition to the above parameters, ETCH2O own specially developed ETCH2O

solution sequestrant is added to prevent scaling by calcium sulphate. Furthermore, ETCH2O

solution enables the plant to operate with an LSI (Langelier Saturation Index) in the brinestream of up to 1.0 instead of the conventional operation at a negative LSI.

Since LSI is pH dependent, the use of ETCH2O solution reduces the acid consumption

required to prevent calcium carbonate scaling.

Chemical mixing is achieved in-line in the low-pressure section together with 5-

micron cartridge filtration.

The feed water is then boosted by high-pressure pump and is divided in the

permeators into permeate and reject streams by reverse osmosis pressure. The reverseosmosis membranes are ion selective and allow almost pure water to permeate through tothe product stream while salts are rejected and flow out into the brine stream. In the event

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that the feed water analysis changes, the plant performance changes accordingly.Subsequent to reverse osmosis, the permeate will feed under remaining pressure to the

client product water storage tank.

Post-treatment chemical dosing equipment enables final correction of pH and sterilization ofthe product water, prior to storage in the product water tank.

Cleaning and maintenance of the permeator membrane are reduced by the inclusion ofmembrane flushing system.

The R.O. system will be a standard ETCH2O product pre-fabricated on a corrosion-resistant

skid. The module will include an integral panel, piping and control valves.

Performance

This system has been designed to operate on a feed Water having TDS of 40000 mg/l(max), where individual salt levels permit operation at 35 % water recovery in the Reverse

Osmosis unit.

It should be noted that the system design is based on feed water operating

temperature range of 25C - 35C and that variations in temperature will affect

performance.

The permeate water produced by the system will have a TDS of < 200 mg/l. before

post-treatment.

The plant is designed to produce the stated capacity throughout the first year of operation;

however, there may be reduction during the next two years of about 4%.

Guarantee

All equipment supplied by ETCH2O are guaranteed against defective manufacture and bad

workmanship for:

14 Months from delivery of equipment to site.

13 Months from installation of equipment.

12 Months from commissioning.

Whichever of the above dated occurs first.

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Scope of Contract

The basis of the offer shall be supply, installation and commissioning of the Brackish WaterReverse Osmosis Plant.

SCOPE OF SUPPLY

Brackish Water Reverse Osmosis Plant, Capacity 300 m/day

The scope of supply offered comprises the following:

Item Qty. Description

1. 1 Pre-Chlorination Dosing Set

2. 2 Filter Feed / Backwash Pump (1duty / 1standby)

3. 1 Manual Multi Media Filter

4. 1 De-Chlorination Dosing Set

5. 1 Reverse Osmosis Unit Consist of:R.O. Skid.

Cartridge Filter.Acid Dosing Set.

Anti-Scalant Dosing Set.

High Pressure Pump.

Membrane.Pressure Vessel.

High & Low Pressure piping work.

Instrumentation.Flow Control Valves.

Monitoring control panel

6. 1 Post TreatmentPost-Chlorination Dosing Set.

pH Adjustment Dosing Set.

7. 1 Lot Instrument for Control Panel.

8. 1 Lot Piping work and Cabling for the proposed equipment.

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EQUIPMENT SPECIFICATION

1.0 Pre-Chlorination Dosing Set

Quantity : One (1)

Reagent : Sodium Hypochlorite Solution 12%

Duty : Up to 3.78 LPH at 100 psi

Type : Positive displacement diaphragm pumpwith variable stroke length.

Material : PVC

Control : Manually adjusted control for stroke lengthand automatically start-up with the filterfeed pump.

Fittings : Supply to include :

-Foot Valve with Strainer-Injection Check Valve-Suction and Injection Tubing

Manufacturer : Pulsafeeder USA

Dosing Tank

Quantity : One (1)


Capacity : 189 lit.

Material : Polyethylene

Fittings

Cover : Snap top with filling port and reinforcedpump base.


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2.0 Filter Feed / Backwash Pumps

Quantity : Two (2) (1 Duty / 1 Standby)

Type : Centrifugal

Duty : 17.85 m/hr

Head : 40 m TDH (4 bar)

Material, Wetted Parts : Stainless Steel

Impeller material : Stainless Steel

Shaft material : Stainless Steel

Motor speed : 3500 RPM

Manufacturer : DP-Holland

Power : 380V/3PH/60Hz

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3.0 Manual Multi Media Filter

Quantity : One (1)

Model : ETCH2O

Type : Vertical

Size : 1.4 mts

Operating pressure : 3.5 bar

Material of construction : FRP

Service flow rate : 17.85 m/hr

Filtration rate : 11.66 m/m/hr.

Media type : Silica Sand, and Gravel

Operation : Manual

Valves : 2 " Ball valves

Face piping : PVC of Class 5

Accessories : - Pressure Gauges- Air Release Valve- Sampling Points Before and After the

Filter

Manufacturer : Pentair

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4.0 De-Chlorination Dosing Set

Quantity : One (1)

Reagent : Sodium Metabisulphite



Material : PVC

Mode of adjustment : Manual 0 to 100% external signal frompH and chlorine meter and controller

Fittings : Supply to include :

-Foot Valve with Strainer-Injection Check Valve-Suction and Injection Tubing

Manufacturer : Pulsafeeder - USA

Dosing Tank

Quantity : One (1)

Reagent : Sodium Metabisulphite

Capacity : 189 lit.


Fittings

Cover : Snap top with filling port and reinforcedpump base.


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5.0 Design Data for Reverse Osmosis Plant

One (1) Reverse Osmosis Plant model No. ETCH2O 250BW capable of

producing 300 m/day of product water from the total feed of 428.56 m3/day.

Design Parameters

Feed Water TDS (max.) : 3000 mg/l

Feed temperature : 25-35o C

Maximum H2S : Nil

Maximum SDI : 3

Maximum Fe : 0.03 mg/l

Maximum chlorine : Zero

Silica : < 30 mg/l

pH : 7.0 7.5

Product Water TDS : < 250 mg/l

Recovery : 70 %

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5.1 Cartridge Filtration

Number of housings : One (1)

No. of cartridge : Ten (10) each

Material of construction : Stainless Steel 316 L

Working pressure : 4 bar

Maximum Pressure : 6 Bar

Particle cut off size : 5 Micron

Cartridge material : Polypropylene

Length of cartridge elements : 10 inches

Accessories : Pressure GaugeAir Release Valve

Manufacturer : WTP-USA

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5.3 Anti-Scalant Dosing Set

Quantity : One (1)

Reagent : H2O Care50

Duty : 0-3.78 ltr/hr.


Material : PVDF

Control : Manually adjusted control for strokelength and automatically start-up with

the R.O. unit.Fittings : Supply to include:

-Foot valve with strainer-Injection Check Valve-Suction and injection tubing

Manufacturer : Pulsatron - USA

Dosing Tank

Quantity : One (1)

Reagent : H2O Care 50

Capacity : 189 lit.


Manufacturer : Pulsafeeder - USA

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5.4 High Pressure Pump

Quantity : One (1)

Duty : 17.85 m3/Hr

Pressure : 15 bar

Motor arrangement : Direct coupled

Winding insulation : Class F

Motor : TEFC

Starter : DOL

Manufacturer : DP Holland

Power : 380V/3PH/60Hz

5.5 Membrane

No. of Elements : Fifteen (15) elements

Type of Elements : Brackish Water Membrane

Size : 8 inch dia x 40 inches long

Staging : Two Stage (1)

No. of vessels : Three (3) vessels, Five (5) elements pervessel

Membrane Type : Filmtech / Hydranautic

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5.6 Feed Control Valve

Quantity : (1) One


Maximum working pressure : 20 bar

Materials of construction : Stainless steel

Adjustment (setting) : Manual

Manufacturer : John Valve Italy

5.7 Brine Control Valve

Quantity : (1) One


Maximum working pressure : 20 bar

Materials of construction : Stainless steel

Adjustment (setting) : Manual

Manufacturer : John Valve Italy

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5.8 Low Pressure Pipework

Materials of construction : PVC

Specification : Class 5


Fittings : Socket welded

Manufacturer : NEPRO PLAST KSA

5.9 High Pressure Manifold

Materials : 316 S.S.


Pipe specification : API 5L schedule 40 seamless

Connections : Fed to permeators-Victualic, othersscrewed.

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6.0 Post Treatment

6.1 Post-Chlorination Dosing Set

Quantity : One (1)



Type : Positive displacement diaphragm pumpWith variable stroke length.

Material : PVC

Control : Manually adjusted control for strokelength and automatically start-

up withthe R.O. unit

Fittings : Supply to include:

-Foot valve with strainer-Injection Check Valve-Suction and injection tubing


Dosing Tank

Quantity : One (1)


Capacity : 189 lit.


FittingsCover : Snap top with filling port and reinforced

pump base.


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7.0 Electrical Control & Instrumentation

7.1 Control panel

Qty : One (1)

Construction : Sheet steel

Finish : Enamel

Enclosure : NEMA-12

Protection : IP54

Cable entry : Top/Bottom

Incoming power supply : 380V/3Ph/60Hz

Running lamps included : Power on

Interlocks provided : High Pressure PumpDosing Pumps

Plant wiring cable spec. : PVC sheathed

Control : By PLC

Automatic stop for:

-Pump motor failure-System high pressure-Low Pressure feed water

-Low level, raw water tank-pH out of scale-High level, product water tank.

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Note: The power supply mentioned above will be applied while constructingthe unit at our factory and for a different power supply a written

confirmation has to be submitted to ETCH2O.

7.2 pH Meter

Quantity : (1) OneApplication : Feed waterRange : 0-14Type : Indicating, flush mounted meter

complete with sensor and fittings.

7.3 Pressure Gauge

Quantity : (4) FourApplication : Feed waterType : Dial type liquid filledManufacturer : Wika - Germany

7.4 Flow Meter

Quantity : (2) twoApplication : Product water and Reject waterType : Indicating, flush mounted meter

Complete with sensor and fittings.

7.5 Conductivity Meter

Quantity : (1) OneApplication : Product WaterType : Indicating, flush mounted meter

Complete with sensor and fittings.

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8 Plant Wiring

This shall be provided where ETCH2Oscope includes installation.

Cables shall be suitably sized for the appropriate duty. PVC sheathed, andextends only between the local ETCH2Opanel and the individual drives andcontrols in the scope of offer.

Pipework

The process and interconnecting Pipework for the Brackish Water System willgenerally be Saudi Arabian manufactured Class 5 PVC.

Drawings

The drawings included in the scope are limited to the following:

- Civil Outline Drawing- Civil Arrangement of Plant Room- General Arrangement of the Overall Plant.- Flow Diagram.- Panel Schematic Wiring Diagram.

Operation & Maintenance Manuals

Two (2) comprehensive Operation & Maintenance Manuals describing theplant in detail, complete with drawings and equipments schedules, operationand lubrication schedules, equipment manuals and spare parts lists, all inEnglish language on an A4 format.

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The following items and services are excluded from the scope of this offer:

- Any item not specifically described in ETCH2O's specification.- Any civil works and designs.- Any site lighting, fencing and guarding.- Excavation, backfilling, trenching and making good.- Any consumable such, but not limited to, spare parts, water, power,

chemicals, lubricants, fuels for erection, commissioning or running of theplant (except where explicitly included herein).

- Power supplies to ETCH2Olocal panel.- Offloading of equipment.- Storage on site and provision of secure space as required.

-

Transportation from storage to place of erection.- All craneage and lifting tackles.- Operation and maintenance.- Any pipe work or cabling outside the plant room.- Painting on site other than touch up of ETCH2Oinstalled equipment.- Drawing other than ETCH2Oinstallation drawings.- As built drawings.- Client's standard conditions of purchase.- Any handrail, platforms, ladders, duct and duct covers of any kind unless

specified in this offer.- Air conditioning and other utilities for the plant room.

Assuring you of our Best attention at all times and looking forward to serveyou soon.

For and on behalf of

Muhammad M.Ali

Proposals Manager

300m3day.pdf

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