Integrated equipment sewage treatment, how much sludge does the aeration tank start to throw?

It depends on what sludge is used. Dewatering sludge requires about 5% (sludge/aeration tank volume). If it is concentrated sludge, the concentration of mixed liquid after adding sludge should be around 1g/L, but the key is to have experience in cultivating sludge. If the cultivation process is not properly controlled, sludge is useless at most.