A complete chlorination system shall be provided at the plant. The system shall consists of chlorine cylinders, wall mounted chlorinators, chlorine injectors and all necessary valves and appurtenances for complete chlorination of water. The chlorine gas shall be stored as liquid under pressure in cylinders. The pressurized gas shall pass through pressure reducing valves and vacuum regulators. The gas shall then be transported under vacuum through wall mounted chlorinators and on to various points of chlorine application.
The chlorinator shall be of vacuum operated solution feed type. Each chlorinator shall include a rotameter (gas flow meter) enclosed in an assembly. Flow meter capacity shall accommodate the maximum capacity of the chlorinator. Flow meter shall be manually adjustable and shall be capable of automatically adjusting the amount of chlorine fed through the chlorinator. The scale of chlorination shall be from 1 - 3 mg / l.
Booster Pumps installed in the machine Hall shall pump the required volume of water for the preparation of chlorine solution through a pipe to which the chlorinators will inject the required quantity of chlorine proportionate to the flow to the Clear Water Tank. Pipe line from Booster Pumps to the point of chlorine mixing shall be of G.I and from chlorination mixing point injection point of chlorine solution in water, Polyethylene pipes.
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