Related Questions

Statement (I): Anaerobic sludge digester, by itself, is considered to be the better method than other methods of sludge treatment: Statement (II): During anaerobic sludge digestion, CH4 is produced; also rodents and other pests are attracted when digester sludge is dried. 
Which of the following is incorrect about aerobic digestion in the sludge digestion process?
Which of the following is correct regarding anaerobic digestion in the sludge digestion process?