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प्रश्न
What are flocs with respect to sewage treatment?
What are flocs?
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उत्तर
Flocs are the masses of bacteria held together by slime and fungal hyphae to form mesh like masses.
संबंधित प्रश्न
Explain the role of microbes in sewage treatment.
Explain the function of “anaerobic sludge digester” in a sewage treatment plant.
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?
What is primary treatment of sewage?
Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?
One of the free-living anaerobic nitrogen-fixer is _________.
Name the chamber in which the suspended objects are filtered and removed during sewage treatment?
Rearrange the names of tanks used in sewage treatment as per the flow of the procedure.
- Settling tank
- Grit Chamber
- Aeration tanks
- Primary sedimentation tank.
The purpose of biological treatment of waste water is to ______.
Identify the INCORRECT statement with respect to sewage treatment.
Which of the following process is a part of preliminary treatment of sewage?
Methanogenic bacteria are not found in ______.
In a sewage treatment plant, all of the following processes belong to secondary treatment except:
In which of the following step large and small particles are removed from sewage through sequential filtration and sedimentation?
The primary treatment of waste water involves the removal of ______.
What would happen if oxygen availability to activated sludge flocs is reduced?
Ganga has recently been declared the national river. Discuss the implication with respect to pollution of this river.
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.
