Biogas produced in anaerobic sludge digester is a mixture of

Read the following statements about activated sludge. a. It is the effluent passed from anaerobic digester to the settling tank. b. A small part of activated sludge is pumped into large tanks called anaerobic sludge digesters. c. A small part of activated sludge is pumped back Into the aeration tank to serve as inoculum. Which of the above statements are incorrect?

Distinguish between the roles of flocks and anaerobic sludge digesters in sewage treatments.

Which of the following is True/false A small part of activated sludge is pumped into large tank called anaerobic sludge digesters.

Activated sludge is A. formed after sequential filtration and sedimentation in primary setting tank. B. bacterial flocs settings after secondary treatment. C. Passed into anaerobic sludge digester.

which of the following is put into Anaerobic sludge digester for further sewage treatment?

Why is less energy produced during anaerobic respiration than in aerobic respiration?

What is sludge ?

(a) What would happen if a large volume of untreated sewage is discharged into a river? (b) In what way anaerobic sludge digestion is important in sewage treatments?

Identify the True or False statements about the sewage treatment plants. I. The water is less polluted if BOD is high. II. Flocs are formed by anaerobic bacteria with fungal filaments in mesh-like structures. III. Activated sludge acts like an inoculum in activated sludge digesters. IV. In activated sludge digesters, gases like methane, hydrogen sulphide and carbon dioxide are formed.