Procedure for purifying waste water in a fluidized bed reactor

Details Procedure for purifying waste water in a fluidized bed reactor Procedure for purifying waste water in a fluidized bed reactor

C - Chemistry, Metallurgy

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C02F 3/28 (2006.01) C02F 3/12 (2006.01) C02F 3/30 (2006.01) C02F 3/34 (2006.01)

Patent

CA 1156381

ABSTRACT The invention disclosed concerns a procedure for purifying waste water containing chlorinated phenolic compounds, such as the bleaching effluent of a sulphate cellulose pulp mill. The purifi- cation is carried out biologically in a floating bed reactor which has been inoculated with a bacterial population decom- posing chlorinated phenolic compounds and wherein the bacteria use the floating particles for affixing substrate. The purifi- cation takes place in the reactor under anaerobic conditions, and the water removed from the reactor may be oxygenated or aerated and conducted to a supplementary aerobic purifying step, where amother floating bed reactor or a bark filter is used.

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