Liquid purification or separation – Processes – Chemical treatment
Patent
1990-07-26
1992-06-09
Silverman, Stanley S.
Liquid purification or separation
Processes
Chemical treatment
210721, 210725, 210756, 210758, 210764, C02F 176
Patent
active
051204525
ABSTRACT:
A process for treating wastewater the improvement which comprises admixing with the wastewater at least 0.5 percent by weight of a solution consisting of hypochlorous acid having a pH of less than 3 to prepare disinfected wastewater having substantially no available chlorine residual.
The novel process of the present invention provides rapid, intimate mixing of the highly pure, highly acidic hypochlorous acid solution with the wastewater stream to disinfect wastewater bodies while minimizing unwanted side effects. The process eliminates the need for storing and handling pressurized gaseous or liquid chlorine.
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patent: 4147761 (1979-04-01), Wojtowicz et al.
patent: 4693832 (1987-09-01), Hurst
patent: 4769154 (1988-09-01), Saylor et al.
E. B. Besselievre "The Treatment of Industrial Wastes", N.Y., McGraw-Hill, 1969, pp. 58-60, 62-68.
G. C. White "The Handbook of Chlorination" 2nd ed. N.Y. Van Nostrand Reinhold, 1986 pp. 37-38, 64-66.
Duncan Budd L.
Leonard Donald R.
Mendiratta Sudhir K.
Ness Richard C.
Lithgow Thomas M.
Meyer, Jr. Allen A.
Olin Corporation
Silverman Stanley S.
Weinstein Paul
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