Water purification by chlorinating, holding, and aerating

Liquid purification or separation – Processes – Chemical treatment

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210694, 210764, 210908, C02F 176

Patent

active

043149065

ABSTRACT:
A method of preparing water for human consumption by chlorinating water obtained from reservoirs, lakes, or streams, which water contains microorganisms and naturally occurring or pollutant organic precursor substances known to react with chlorine to yield one or more halogenated organic compounds, holding the chlorinated water for a period of time sufficient for the chlorine to react with said precursors to produce halogenated organic compounds, and then removing the halogenated organic compounds from the water by aeration. Such treatment also removes any bromine-containing organic compounds contained in the water and any chlorine derivatives thereof formed in the chlorine treatment.

REFERENCES:
patent: 1229305 (1917-06-01), Menzies
patent: 1771518 (1930-07-01), Adler et al.
patent: 1805353 (1931-05-01), Berl
patent: 2452970 (1948-11-01), Vincent et al.
patent: 3337454 (1967-08-01), Gruen et al.
patent: 3732164 (1973-05-01), Pressley et al.
patent: 3733266 (1973-05-01), Bishop et al.
patent: 4243525 (1981-01-01), Greenberg
Rook, "Formation of Haloforms During Chlorination of Natural Waters,", J. Water Treatment Exam., 1974, pp. 234-243.
Betz Handbook, 7th Ed., 1976, pp. 21-23.
Rook, "Haloforms in Drinking Water", JAWWA, Mar. 1976, pp. 168-172.
Linsley et al., Water Resources Eng., McGraw-Hill, 1964, pp. 452-454.
Sawyer, "New Water Treatment Plant, Poughkeepsie, N.Y.", Apr. 10, 1962, pp. 1-12.

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