Advertisements
Advertisements
Question
Methanogenic bacteria are not found in ______.
Options
rumen of cattle
gobar gas plant
bottom of water-logged paddy fields
activated sludge
Advertisements
Solution
Methanogenic bacteria are not found in activated sludge.
Explanation:
Methanogenic bacteria are not found in activated sludge because they can survive and function only under anaerobic (oxygen-free) conditions.
Activated sludge is an aerobic process, where oxygen is supplied for the breakdown of organic matter, so methanogens cannot grow there; they are instead found in anaerobic digesters used for sludge treatment.
APPEARS IN
RELATED QUESTIONS
Explain the function of “anaerobic sludge digester” in a sewage treatment plant.
Distinguish between the roles of flocs and anaerobic sludge digesters in sewage treatments.
What is the key difference between primary and secondary sewage treatment?
Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20 mg/L, 8 mg/L and 400 mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each, assuming the river water is relatively clean?
Describe how do 'flocs' and 'activated sludge' help in Sewage Treatment.
One of the free-living anaerobic nitrogen-fixer is _________.
Name the chamber in which the suspended objects are filtered and removed during sewage treatment?
Name the tank to which the sewage water is passed after the preliminary treatment?
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.
The purpose of biological treatment of waste water is to ______.
Which of the following is TRUE about primary treatment?
In the process of biogas production which of the following anaerobic bacteria are used?
What happens during the course of sewage decomposition?
During tertiary treatment, the bacterial floes sediment in the sedimentation tank, this sediment is called ____________.
The primary treatment of waste water involves the removal of ______.
Activated sludge should have the ability to settle quickly so that it can ______.
What is the group of bacteria found in both the rumen of cattle and shidge of sewage treatment?
Discuss about the major programs that the Ministry of Environment and Forests, Government of India, has initiated for saving major Indian rivers from pollution.
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
What would happen if a large volume of untreated sewage is discharged into a river?
Study the given diagram of the Sewage Treatment Plant (S.T.P.) and answer the question that follows:
- Which one of the two 'S.T.P.' (A) or (B) will be more effective in treating the human excreta in municipal waste?
- Write the steps followed in carrying the treatment of the sewage in step (Z), once the BOD of sewage is reduced significantly till it is passed on to the "anaerobic sludge digesters".
Which one is wrongly matched?
Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from ______.
Explain the steps involved in preliminary treatment of sewage.
