What happens to activated sludge?

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(C) small part of the activated sludge is pumped back into the aeration tank to serve as inoculum (seed). The major part of the activated sludge is pu

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The major part of the sludge is pumped into large tanks called anaerobic sludge digesters

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(C) small part of the activated sludge is pumped back into the aeration tank to serve as inoculum (seed). The major part of the activated sludge is pumped into large tanks called anaerobic sludge digesters,where anaerobic bacteria digest the bacteria and fungi in the sludge,producing gases like methane,hydrogen sulfide,and carbon dioxide.

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