Which of the following organisms produce biogas from sludge in the digester tank of a wastewater treatment plant?
A. Anaerobic bacteria
B. Fungi
C. Aerobic bacteria
D. Protozoa
Answer:A
Which of the following organisms produce biogas from sludge in the digester tank of a wastewater treatment plant?
A. Anaerobic bacteria B. Fungi C. Aerobic bacteria D. Protozoa