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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
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
What is the key difference between primary and secondary sewage treatment?
What is primary 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.
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 ______ and major part is pumped into large tanks called ______.
Into which of the following the sewage water is pumped after preliminary treatment?
Identify the type of microorganisms involved in floe formation during sewage treatment.
What happens during the course of sewage decomposition?
______ 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.
In which of the following step large and small particles are removed from sewage through sequential filtration and sedimentation?
Wastewater treatment generates a large quantity of sludge, which can be treated by ______.
BOD of waste water is estimated by measuring the amount of ______.
In what way anaerobic sludge digestion is important in sewage treatments?
Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from ______.
After a significant reduction in the BOD of wastewater, it is passed into a settling tank where bacterial flocs are allowed to sediment. This sediment is called ______.
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.
