Biology · PYQ NEET UG 2020
हिन्दीWhich of the following is put into Anaerobic sludge digester for further sewage treatment?
Correct answer · Option 3
Activated sludge
Explanation
A small part of the activated sludge is pumped back into the aeration tank while the major part of the sludge is pumped into anaerobic sludge digesters.