Process for the decoloration and detoxification of aqueous efflu

Details Process for the decoloration and detoxification of aqueous efflu Process for the decoloration and detoxification of aqueous efflu

1997-11-26

2000-07-04

Hruskoci, Peter A.

Liquid purification or separation

Processes

Treatment by living organism

210631, 210748, 210759, 210760, 210763, 210917, C02F 178

Patent

active

06083398&

ABSTRACT:
Process for the decoloration and the toxification of highly polluted (COD.gtoreq.1000 mg/l) resistant aqueous effluents by an oxidation treatment of the effluents by hydrogen peroxide, continuously and in a homogeneous phase, at a pH of 2 to 5 in the presence of Fe ions and under irradiation by means of UV radiation. The AvOx/COD ratio by weight is not less than 0.5:1 and the AvOx/concentration of Fe ions ratio by weight is not less than 50:1.

REFERENCES:
patent: 4012321 (1977-03-01), Koubek
patent: 5043080 (1991-08-01), Cater et al.
patent: 5470480 (1995-11-01), Gray et al.
patent: 5611928 (1997-03-01), Savolainen et al.
W.G. Kuo: "Decolorizing Dye Wastewater with Fenton's Reagent". In: Water Research, vol. 26, No. 7, Jul. 1, 1992, pp. 881-886.
G. Ruppert et al.: "UV-03, UV-H203, UV-Ti02 and the Photo-Fenton Reaction . . . ". In: Chemosphere, vol. 28, No. 8, 1994, pp. 1447-1454.

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