There is a high level of suspended solids in the effluent from the aerobic tank; would it be advisable to add ferric chloride?

2015-12-17View Original

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Recently, the influent load to the aerobic tank has been gradually increased. During operation, it was found that the dissolved oxygen level needed to be tightly controlled; as a result, the effluent from the aerobic tank became turbid. It was decided to add some ferric chloride in order to increase the compactness of the sludge in the aerobic tank, as the sludge there appeared to be too loose. However, after adding ferric trichloride, the flocculated sludge floated to the surface of the water. Could anyone tell me what the reason for this is?

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There is a high level of suspended solids in the effluent from the aerobic tank; would it be advisable to add ferric chloride?

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