ProMinent Australia Head Office - Sydney

Unit 4, 4 Narabang Way BELROSE NSW 2085

PO Box 85, BELROSE WEST NSW 2085

Ph: (02) 9450 0995 Fax: (02) 9450 0996 Fax (02) 9450 0994 -

for orders

Email:sales@prominentfluid.com.au

Website: www.prominentfluid.com.au

ProMinent Melbourne Office

1/21-22 National Drive HALLAM VIC 3803

Ph: (03) 8795 7430 Fax: (03) 8795 7431

Email: pfcvic@prominentfluid.com.au

ProMinent Brisbane Office

1/68 Murdoch Circuit ACACIA RIDGE QLD 4110

PO Box 6024 Upper Mt Gravatt QLD 4122

(07) 3213 1900 Fax: (07) 3272 0445

Email: pfcqld@prominentfluid.com.au

Fluorideby ProMinent May 2016

Fluoridation of drinking water remains the most significant

dental health program in New South Wales and Australia.

The advantage of water fluoridation is that the entire

community benefits from the preventative measure, regardless

of age, socio-economic level, educational achievement,

individual motivation, or the availability of dentists.

Fluoride packages and installations have to meet strict guide

lines. In New South Wales where ProMinent Australia have

supplied more than 70 systems, there is a fluoride code, ‘Code

of Practice for the fluoridation of Water Supplies Act 1957‘ This

code was published by the Oral Health Branch of the Dept of

Health and revised in August 2002.

This code has also been accepted by other Australian states

as the bench mark for fluoride installations.

Fluoridation

TYPES of FLUORIDE

Fluoride is available commercially in 3 different ways, 2 are powders the other a

liquid. Each display different concentrations of available fluoride ions & solubility

Powders

Sodium fluoride (NaF) - most expensive, 44% by weight available fluoride ion

(solubility is 4.0%)

Sodium Silicofluoride (Na2SiF6) - 60% by weight available fluoride ion (solubility

0.4%, nominal design solution strength 0.2%)

Liquid

Hydrofluosilicic acid (H2SiF6) - liquid – up to 29% by weight available fluoride

ion

Some of the Fluoride Packages ProMinent can offer

Saturator 5kg

Container

Saturator

Vacuum load of

25 kg bags

Sodium Silicofluoride Vacuum load Crane & hoist bulk bag unloader Vacuum bulk bag unloader

Sodium Fluoride Saturators

With ProMinent 5kg or vacuum load saturators, we offer both down flow with

filter media and up flow with external filters.

Sodium fluoride has a reliable saturation solubility of 4%.

Excess sodium fluoride powder is placed in a dissolving tank and the

constant 4 % solution of sodium fluoride produced is dosed into the

water supply in proportion to the mains mag flow meter milliamp signal.

The ProMinent metering pump is set to display the total amount dosed.

This is to be compared daily against the total water flow to ensure

correct dosing has taken place. The metering pump has a monitor to

detect if the dosing has stopped and alarm accordingly.

5kg Saturators

ProMinent’s 5-250 sodium

fluoride saturator was

designed for small water

supplies up to around 2

Ml/day, but can be used for

much larger plants than this.

Featuring patented

container cutter, loader

& water flushing device

5kg saturator in a portable shed

ProMinent organised the supply of sodium

fluoride granules in a 5 kg screw-top, foil-

sealed plastic containers.

To ensure easy and dust free unloading of

this sodium fluoride container, ProMinent

designed and patented a special loader to

accept the container, slice the seal, and

allow the powder to dump into the

saturator tank.

Then by the push of a button the container

can be flushed with clean water to allow

the jar to be easily disposed of in the

normal plastic recycling.

Loading of the 5kg jars of sodium fluoride powder

Firstly remove the screw top cap from the 5 kg fluoride container.

Check the security of the container seal. Remove the delivery

protection cap from the container unloader. Invert the 5 kg container

and screw clockwise into the unloader until it seats.

Remove the black positioning plug stop. Holding the red handle,

rotate the top of the loader with the container attached, in an

anticlockwise direction.

As it rotates the container seal will be cut to allow the contents to fall

into the saturator solution tank below. About 10% of the seal will

remain intact to prevent it from also from falling into the tank.

Now that the container is empty, hold the water flush button. This

opens a water flush line to wash the inside of the bottles. Slowly

rotate the red handle backwards and forwards to flush clean the

bottle. When the bottle is clean return the red handle to the start

position.

Replace the black positioning stop to prevent holder

rotating while unscrewing the bottle.

If no further containers are to be unloaded, either leave the

flushed container in place until the next unloading of

chemical is required or replace the attached cover.

To install more containers, remove the empty clean

container for disposal with your plastic recycling. Load up a

new container as described above.

When flushing the containers, if one flush was not sufficient

to clean the insides of the container, repeat the flush cycle

again while rotating the container.

While ever the minimum NaF bed depth of 150 mm is

maintained (requirement from NSW fluoride act) a 4%

sodium fluoride solution will be available for dosing into the

water supply in proportion to the mains 4-20 mA mag flow

signal.

Down flow saturators

Setting a down flow Saturator in Operation

To set a down flow saturator in operation fill the saturator tank

with 2 courses of media sand (see media depth diagram)

Fill the saturator tank with water allowing space for powder to

be added.

Prime the dosing pump (as detailed in the enclosed pump

manual). Calibrate the pump to the flow signal so as to give a

dosing rate of 1 mg/litre when pump stroke is on 95% and code

lock the pump. (Variations to 1 mg/litre will apply in some hotter

locations or where there is a higher than normal natural fluoride

levels in the water.

Due to the toxic nature of the fluoride solution, ProMinent

recommends that the above steps be carried out without the

presence of fluoride. Fluoride can be added when the system is

calibrated, tested and ready to set into service.

The raw water enters the tank

through a lateral pipe system that sits

under the undissolved sodium fluoride

powder. The water passes through

the fluoride and becomes saturated to

4%.

Sodium fluoride (supplied in 5kg

screw-top sealed plastic containers)

is added to the saturator tank via the

bottle cutter.

Up flow saturator

A saturated solution is reached

when there is un-dissolved granules

present inside the tank. NSW

regulations require a minimum depth

of 250mm of un-dissolved granules

at all times for an up flow saturator.

The saturated solution is drawn from

the saturator tank from a baffled

outlet. It is drawn through 2 inline

cartridge filters to prevent

undissolved fluoride particles being

metered into the water supply.

For water supplies up to10 Ml/day

ProMinent Fluid Controls have a

sodium fluoride saturator with a

vacuum loader for unloading sodium

fluoride granules from 25 kg bags.

.

Saturator with vacuum loader for 25 kg bags

The vacuum loader especially designed for fluoride, is

mounted on the saturator and comes complete with dust

extractor, suction wand and a flexible hose. The

ProMinent vacuum loader is suitable for both the sodium

silicofluoride packages and the sodium fluoride

saturators.

The vacuum loader operates as follows:As the powder enters the collection unit, the large volume inside the unit causes the air velocity to drop, allowing the powder to fall to the bottom of the unit.

The air is then drawn upwards, through a filter to remove any powder particles that are still airborne, before leaving the unit via the vacuum motor.

The vacuum wand is constructed from two different diameter

stainless steel tubes. The larger is used to transfer the powder

from the bag to the filtration unit via the vacuum hose. The

smaller allows air to be mixed with the product for efficient

transfer.

Vacuum LoaderWith the vacuum loader switched on, the wand

is inserted into the container or open bag. The

vacuum motor will operate for 40 seconds (or

longer) before stopping.

At this point, the inlet valve will close, and the

pneumatically actuated dump valve at the

bottom of the chamber will open, allowing the

collected powder to drop into the hopper.

A cleaning cycle will also begin. Once the

cleaning cycle has completed, the dump valve

will close, the inlet valve will open and the

vacuum motor will start again.

This valve on the suction side of the vacuum

loader is to prevent powder from blowing out of

the wand during the cleaning cycle.

The ProMinent Vacuum Transfer System

is available in 2 models and includes:

collection chamber

compressed air handling system

suction valve

dump valve

hand held vacuum wand

vacuum motor

Dedicated air supply

(either a compressor or plant air)

The saturator comes as a package all mounted

suitable for ease of installation complete with

overflow, drain, calibration cylinder, isolation valves

and metering pump.

Two mandatory mains water flow switches are to be

fitted in accordance with the fluoride ACT

A calibration cylinder is provided to accurately

calibrate the metering pump against the dosing

conditions.

The metering pump is set to display the total amount

dosed. This is compared daily against the total water

flow to ensure correct dosing has occurred.

Metering pumps are supplied with a flow failure

monitor and alarm relay to alarm if dosing stops.

All saturators are supplied with softeners on the

incoming water.

Sodium Silicofluoride

Vacuum and Bulk bag loading

General Description

ProMinent offer varying packages for sodium silicofluoride preparation and

dosing. A number of different powder loading methods are available such as:

Vacuum loader 25 kg bags

Manual bag loader for 25 kg bags

Bulk bag with conveyor transfer

Bulk bag with vacuum transfer

Bulk bag mounted directly over the day hopper

With all of the above either an integral or attached dust extractor is required, with

the exhaust piped outside the room to near ground level above a water ‘dust trap

tank’.

The control panel is normally mounted on the hopper frame so that it can be pre-

wired and tested before leaving our works. If it is required that the control panel is

to be mounted on the building wall, the package still has to be wired for testing in

our works, separated for despatch and reconnected at site incurring additional

costs.

A typical sodium silicofluoride package could consist of:

Hopper for 36 hours capacity (we would suggest 72) in 304SS

Hopper support frame and base - HDGMS

Bulk Bag loader (painted MS) or

Vacuum loader (304SS) or

Manual bag loader

Control Panel

Dust extractor with exhaust water trap tank

Powder feeder – 316 SS

Loss of weight recording system with chart recorder or digital display

Solution tank with10 minutes retention in – 316 SS or HDPE

Stirrer – 316 SS shaft and prop

Transfer pump – Spectra PC or Peristaltic or Gravity feed with flow control

Accessories like water softener, compressor etc. – as required

Sodium Silicofluoride with vacuum loader

Vacuum loader

Hopper with at least

36 hours capacity

Hopper support

frame with load cells

Stirrer

Powder feeder

Solution tank

Transfer pump

Typical Sodium silicofluoride skid mounted package

with vacuum loader and DULCOflex transfer pump.

The walls of the fluoride room have to be smooth and have no horizontal

grooves to catch fluoride dust. Windows are to be flush on the inside.

Provision has to be

made for storing 90

days supply of fluoride

powder inside the

fluoride room. (NSW

Fluoride Act)

Fluoride packages can be

gravity fed or transferred to

the injection point via a

ProMinent Spectra

progressive cavity or

DULCOflex peristaltic hose

pump.

With gravity feed packages,

to ensure a 10 minute

retention time in the

solution tank, we include

flow regulators on the

incoming water.

This shows a manual bag

loader with dust extractor

attached. Product caught in the

dust extractor falls back into

the hopper.

Cheaper grades of fluoride are

available from different

countries. A ProMinent

crumbler can be fitted between

the bag loader and the hopper

for removing lumps from poorer

quality sodium silicofluoride.

Inside a typical sodium silicofluoride room,

this plant suitable for 20 Ml/day water supply.

Typical sodium silicofluoride

vacuum load package

ProMinent use 3 load cells on smaller packages and 4 on larger,

for the loss of weight recording. The 24 hour recorder chart

would normally be replaced only when hopper is refilled.

Low level switch is

required to protect

the equipment.

High level is set to

alarm on overflow

and can be set to

close a solenoid

valve on the inlet

water.

Control panel showing the mimic and a

circular (24 hr) chart recorder to record

loss of weight.

A digital indicator may be

accepted as an alternative.

If the water hardness exceeds 75 mg/l as calcium carbonate a water softener

may be required.

There are two control methods

a) Constant solution transfer with varying solution strength

b) Constant solution strength with varying solution transfer

Stainless circular solution

tank with floor mounted

stirrer. ProMinent PE tanks

with tank mounted stirrer

are an alternative.

Tank has a baffle to

prevent the direct passage

of powder that has not

dissolved short circuiting to

the outlet. The outlet from

the tank is about 100 mm

from the bottom.

Bulk Bag InstallationsFor unloading from bulk bags we offer the following:

Loading from the bottom of bulk bags using a crane and hoist unloader

Loading from the bottom of bulk bags using a “fork lift” unloader

Unloading from the top of a bulk bag with a vacuum loader.

Crane & hoist Fork lift with spring-lift bag supports ProMinent vacuum unloader

Crane & HoistThe bulk “crane and hoist” bag loader we offer would

normally come with an electronically operated hoist for

lifting the bags and placing them in position. It has a

lifting capacity of 1250 kg and operation is controlled

via a hand held push button pendant on a drop cord.

The double wall design bulk bag interface provides a

dust tight sealed connection to the bulk bag outlet

spout via a spout lock clamp ring.

A dust collection system is manifolded between the

bulk bag unloader and the day hopper with the

exhaust piped outside to above a water trap tank.

At the base of the loader is an intermediate hopper

from where the powder is conveyed to the day hopper,

via a motor driven spiral conveyor of capacity up to

5,000 l/h.

Dust tight connection

Intermediate (floor) hopper

and flexible conveyor

Crane Hoist Bulk Bag Installations

This shows the dust extractor,

intermediate hopper and 2 flexible

conveyors going off to feed two

separate hoppers

This shows a wetting cone eductor feed

package where the solution is fed up

into the solution tank. This package has

one preparation tank with fixed rate

solution transfer and varying solution

strength.

Spent bulk bag being

collapsed by operating

the dust extractor

Height restrictions

When height poses a problem,

we offer a specially designed

eductor and wetting cone

arrangement for mixing the

fluoride and transferring it up

and into the solution tank. This

lowers the hopper considerably

and reduces the building height

requirement.

The ProMinent vacuum package for unloading from the top of bulk bags is

also suitable where height restrictions are a major factor.

ProMinent designed vacuum loader for bulk bags

38

Twin vacuum units

Pneumatic slide gate Hopper & wetting cone

39

Transfer pump skid

Dust tight bag clamp with vacuum ring

Control panel

For the continuous monitoring of

fluoride levels in water supplies, a

ProMinent fluoride analyser is available

with milliamp retransmit and alarms.

The analyser is normally supplied as

backboard mounted with temperature,

fluoride and reference electrodes.

A magnetic stirrer is also provided to

assist with the single or two point

calibration.

Standard unit measures free fluoride

with an optional unit available for total

fluoride.

We also provide a double validation

unit each probe checking against the

other and alarming on fault.

Fluoride Monitor

Solenoid Metering Pump DULCOflex Peristaltic

Motor Driven metering Pump Spectra Progressive cavity

Pump SkidsTypes of Metering and Transfer Pumps for Fluoride

Images show fluoride solution

tanks, vent tanks and peristaltic

transfer pump.