MODULE, SUCTION SIDE DOSER, flow range 15-150 litre/h
Valid Article
OC subscriptions: included in supply or field order tools (e.g. UniField)
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SC subscriptions: included in supply or field tools
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OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)
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MODULE, SUCTION SIDE DOSER, flow range 15-150 litre/h
Definition
Module allowing exact dosing and instant mixing of chemical solutions (coagulant, lime) with raw water, used to improve assisted sedimentation (easier and quicker to perform, better quality of the treated water) or for pH correction.
Indications
The module includes the equipment required for the exact dosing and instant mixing of chemical solutions with water that is pumped with a motor pump (petrol or diesel).
Packaging
Plastic container of 120 litre
Instructions for use
Can supply several assisted sedimentation tanks in parallel.
Assemble the module as indicated in the user manual.
Connect the T-piece of the suction side doser directly to the 2" inlet of a petrol motor pump. When a 3" diesel motor pump is used, connect the T-piece with a 3" - 2" reducer and the short spiral hose included in the motor pump kit.
Prepare the chemical solution in the container.
Put the regulation valve (flowmeter / PVC pipe combination) in the container.
Once the motor pump has been started and revved to the desired yield, regulate the chemical solution flow by means of the valve (according to the results of the jar test). The flow can be read directly on the flowmeter.
Caution, if the strainer of the pump or suction hose gets clogged, the water/chemical dose ratio will be altered.
Train the staff in proper operation, follow-up and maintenance of the suction side doser (rinse with clear water after use).
CAUTION
Not to be used with PAX coagulant.
For more detailed information and instructions see also the Manual Installation Suction Side Doser (MSF) and "Public Health Engineering in Precarious Situations", MSF, 2nd edition, 2010:
- T.B. 2.16 Assisted batch sedimentation
- T.B. 2.13 Turbidity measurement
- T.B. 2.14 Coagulants / flocculants
- T.B. 2.15 Jar test for coagulants.
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