| Product Description :: |
High Rate Solids Contact Clarifier is widely used for clarification of raw water and wastewater. Incorporates the design of internal solid recirculation thereby optimising the chemical consumption and making it more economical than conventional filter.
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| Working Principle :: |
The raw / Wastewater, coagulants and large quantities of recirculating precipitates are thoroughly mixed and are retained in intimate contact for prolonged period of time in the draft tube and cone sections of the clarifier. The intimate contact causes the chemical reactions to proceed at a rate with a minimum of coagulants. Further by contacting the water with the great volumes of precipitates in circulation, maximum clarification of the water can be obtained by the adsorptive properties of the precipitates or flocs formed.
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| For proper clarifications, the design of HRSCC provides three zones :: |
 Rapid Mix zone, where raw water / wastewater recirculated precipitates and fresh coagulants are rapidly mixed together
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Slow Mix zone, where gentle mixing permits floc formation, and bring the floc into intimate contact with
the suspended impurities
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Clarification or settling zone, where the upward flow is reduced to a low value to permit the precipitates to settle out
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Raw water entering the reactivator is immediately mixed with previously formed precipitates and chemicals, obtaining intimate contact with solids for the full retention time provided in the mixing zone. By the time the water enters the outer settling zone, the bulk of the precipitate particles are large, dense and settle rapidly. It is necessary to
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