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How to resolve operational faults in oxidation ditches

2016-05-18View Original

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During operation, a thick layer of sludge accumulates on the surface of the oxidation ditch; the sludge particles, with a diameter of about 1 mm and a yellowish color, often cause a large amount of sludge to float in the secondary sedimentation tank. The sludge turns white, and flocs are carried away with the effluent, resulting in a rapid decrease in SV30 and a loss of treatment efficiency. The accumulated sludge then thins out and disappears. It repeats over and over again; what are the causes and control measures?

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