Sludge in separate tanks is decomposed to get biogas by
aerobic bacteria
anaerobic bacteria
none of these
Biogas is produced by anaerobic (oxygen-free) digestion of organic materials such as sewage sludge, animal waste, and municipal solid wastes.
Question 3
Which of the following is/are products of wastewater treatment? (a) Biogas (b) Sludge (c) Both biogas and sludge (d) Aerator