Advertisements
Advertisements
प्रश्न
Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of waste waters rich in organic matter. Discuss.
Advertisements
उत्तर
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
संबंधित प्रश्न
Explain the different steps involved during primary treatment phase of sewage.
Explain the function of “anaerobic sludge digester” in a sewage treatment plant.
What is primary treatment of sewage?
Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?
Answer the following question.
What are 'flocs', formed during secondary treatment of sewage?
Answer the following question.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.
Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called _______________.
Why is this sewage water treatment essential?
Name the chamber in which the suspended objects are filtered and removed during 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?
Which of the following occurs during secondary treatment?
Into which of the following the sewage water is pumped after preliminary treatment?
What happens during the course of sewage decomposition?
Which of the following process is a part of preliminary treatment of sewage?
Name the states involved in Ganga action plan.
What is the group of bacteria found in both the rumen of cattle and shidge of sewage treatment?
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
