The COD removal rate in the contact oxidation tank is particularly low
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The settling of Sv30 is extremely slow, reaching only 95%, and the COD removal efficiency in the contact oxidation tank is very low; the COD level in the effluent is already over 500! What should I do?
It is estimated that the shedding of biofilms has caused an increase in the SS in the effluent, leading to high COD levels in the effluent.
In general, filamentous bacteria are less likely to cause swelling in contact oxidation; it’s best to check the condition of the bacteria.
The biofilm detaches, and there are problems with the bacteria