Process and apparatus for ultraviolet decomposition of waste wat

Details Process and apparatus for ultraviolet decomposition of waste wat Process and apparatus for ultraviolet decomposition of waste wat

1997-04-04

1998-08-25

McCarthy, Neil

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210748, 210759, 2101981, 210205, 210903, 210908, 210 961, C02F 1172, C02F 132

Patent

active

057980470

ABSTRACT:
In a process for UV decomposition of waste water containing organic substances as contaminants, the organic substances can be efficiently decomposed with maintaining a high decomposition rate by controlling addition of an oxidizing agent based on COD value of the waste water; for example, when the oxidizing agent is hydrogen peroxide, its concentration is continuously controlled within the range of 0.5 to 1.0 equivalents to the COD value.

REFERENCES:
patent: 4012321 (1977-03-01), Koubek
patent: 5439599 (1995-08-01), Gehin et al.
patent: 5470480 (1995-11-01), Gray et al.
Office Action in counterpart Japanese Application, issued Apr. 21, 1998 and English translation of portions within wavy lines.

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