Breakpoint chlorination control system

Details Breakpoint chlorination control system Breakpoint chlorination control system

1982-03-22

1984-03-06

Hruskoci, Peter A.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

137 93, 210743, 210754, 210764, 210 961, 210143, 210199, C02F 176

Patent

active

044352913

ABSTRACT:
A method and apparatus for breakpoint chlorination is disclosed which utilizes a control dosing of chlorine as well as a base substance and sulfur dioxide to remove ammonia, disinfect and thereafter dechlorinate waste waters. The chlorine dosage is controlled according to a derivative of residual chlorine with respect to chlorine dosage to provide an accurate control of chlorine to insure oxidation of ammonia in the waste water.

REFERENCES:
patent: 3528545 (1970-09-01), Frazel et al.
patent: 3732164 (1973-05-01), Pressley et al.
patent: 3760829 (1973-09-01), Schuk et al.
patent: 4232700 (1980-11-01), Sutt
patent: 4304673 (1981-12-01), Reynolds et al.
patent: 4364835 (1982-12-01), Cheh

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