Advertisements
Advertisements
Question
Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of waste waters rich in organic matter. Discuss.
Advertisements
Solution
Organic matter in wastewater consumes a lot of oxygen to carry on various biological processes. It results in reduction of oxygen level. In the surrounding air and thus can Increase air pollution. Consumption of oxygen by organic matter in wastewater is measured by BOD (Biochemical Oxygen Demand). A higher level of BOD indicates a higher polluting potential of wastewater. It is important to reduce the BOD so that pollution can be reduced. Hence, aerobic degradation is more important than anaerobic degradation for the treatment of large volumes of wastewaters rich in organic matter. BOD level is reduced by aerobic degradation which is carried out by floc. Flocs are associations of bacteria and fungi which form mesh-like structures. Flocs eat away most of the organic matter in wastewater and thus help in reducing BOD. Once BOD Is pulled down below a threshold level the sludge is ready for anaerobic degradation.
APPEARS IN
RELATED QUESTIONS
Explain the role of microbes in sewage treatment.
What is the key difference between primary and secondary sewage treatment?
Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.
Answer the following question.
What are 'flocs', formed during secondary treatment of sewage?
What are flocs with respect to sewage treatment?
Small part of activated sludge is passed back into primary sedimentation tank.
If the above statement is correct then rewrite as it is and in case it is incorrect then reframe it.
In which of the following microbial digestion of organic wastes of sewage takes place?
Which of the following is TRUE about primary treatment?
After which of the following process effluents from anaerobic sludge digesters are released in natural water bodies?
Small part of activated sludge is passed back into ______ and major part is pumped into large tanks called ______.
During tertiary treatment, the bacterial floes sediment in the sedimentation tank, this sediment is called ____________.
In the process of sewage treatment, the activated sludge is digested by ______
Which of the following is put into Anaerobic sludge disaster for further sewage treatment?
Wastewater treatment generates a large quantity of sludge, which can be treated by ______.
Name the states involved in Ganga action plan.
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
Which one is wrongly matched?
Removal of suspended, floating, coarse and solid particles in sewage treatment is called ______.
