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प्रश्न
What would happen if oxygen availability to activated sludge flocs is reduced?
विकल्प
It will slow down the rate of degradation of organic matter.
The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.
Flocs would increase in size as anaerobic bacteria would grow around flocs.
Protozoa would grow in large numbers.
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उत्तर
The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.
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संबंधित प्रश्न
Distinguish between the roles of flocs and anaerobic sludge digesters in sewage treatments.
Why is this sewage water treatment essential?
Name the chamber in which the suspended objects are filtered and removed during sewage treatment?
In which of the following microbial digestion of organic wastes of sewage takes place?
Due to which of the following reason/s sewage water cannot be discharged directly into river?
Into which of the following the sewage water is pumped after preliminary treatment?
______ refers to the organic matter which settles down after physical treatment of sewage.
Study the following statements regarding tertiary treatment of sewage and choose the correct option.
i. It produces methane gas.
ii. The effluents formed from these plants undergo chlorination.
iii. BOD is significantly increased at this step.
iv. It includes screening and passage of effluent through grit chamber.
Wastewater treatment generates a large quantity of sludge, which can be treated by ______.
The primary treatment of waste water involves the removal of ______.
Why are flocs important in biological treatment of waste water?
In what way anaerobic sludge digestion is important in sewage treatments?
Given below is the flowchart of sewage treatment. Identify A, B, C, D and E and select the correct option.
Which one is wrongly matched?
Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from ______.
The aeration tank of a sewage treatment plant is not functioning properly. Explain in detail the impact of this on the treatment of sewage and BOD of the effluent.
Which bacterium is an example of a methanogen commonly found in anaerobic sludge during sewage treatment?
Which action plans were initiated by the Ministry of Environment and Forests to construct sewage treatment plants and protect major Indian rivers from pollution?
By what percentage does the decomposition of organic matter by aerobic bacteria in aeration tanks typically lower the BOD during secondary treatment?
