Water treatment process

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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210 51, 210 53, 210 62, 162 29, C02B 120, C02B 136

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active

042194180

ABSTRACT:
The present invention is concerned with a process for the purification of highly polluted water containing paper mill waste products and algae, which comprises: (a) treating said highly polluted water with hydrogen peroxide and alum; (b) allowing flocculation and then sedimentation to take place, while pre-chlorinating the treated water by subjecting it to the action of chlorine during flocculation or after sedimentation, or both; (c) filtrating the resulting water to remove therefrom solid particles still in suspension; and (d) post-chlorinating the filtrated water by treating it with a liquid composition obtained by mixing chlorine, an alkali metal chlorate and a non-toxic mineral acid. The water treatment process according to the invention enables one to obtain a drinking water which is colorless, odorless and from which bad tastes have been eliminated.

REFERENCES:
patent: 3082146 (1963-03-01), Wentworth et al.
patent: 3386915 (1968-06-01), Rutschi et al.
patent: 3577341 (1971-05-01), Keith, Jr. et al.
patent: 3705098 (1972-12-01), Shepherd
patent: 3711402 (1973-01-01), Zumbrunn et al.
patent: 3737374 (1973-06-01), Stern et al.

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