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is the first step of sewage treatment....

_______is the first step of sewage treatment.

A

Precipitation

B

Chlorination

C

Sedimentation

D

Aeration

Text Solution

Verified by Experts

The correct Answer is:
C
Primary treatment in sewage treatment involves physical removal of particles (large and small) from the sewage through filtration and sedimentation. Initially floating debris is removed by sequential filtration. Then the grit (soil and small pebbles) are removed by sedimentation.
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  2. Identify the blanks spaces A,B,C and D in the following table and sele...

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  4. During the primary treatment of sewage, solid paricles that settle dow...

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  5. The purpose of biological treatment of waste water is to

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  6. The masses of bacteria held together by slime and fungal filaments to ...

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  7. Read the following statements and select the correct option. Statem...

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  8. BOD isin polluted water and in potable water.

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  9. Biochemical oxygeb demand (BOD) in a river water

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  10. When domestic sewage mixes with river water

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  11. A sewage treatement process in which a part of decomposer bacteria pre...

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  12. In the sewage treatment, bacterial flocs are allowed to sediment in a ...

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  13. Mach column I with column II and select the correct answer from the gi...

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  14. Given below is the flow chart of sewage treatement. Identify A,B,C and...

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  15. Read the following statements and select the incorrect one.

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  17. Which of the following steps is taken by the Ministry of Enviornment a...

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  18. Mach column I with column II and select the correct answer from the gi...

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  19. Study the following statements and select the incorrect ones. (i) Ph...

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  20. Methanogens, growing anaerobically on cellulosic material produce

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