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DFCCIL_CE _Quiz 36

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Question 1

In the oxidation ditch, the excess sludge is taken to?

Question 2

Fresh sludge has moisture content of 99% and after thickening, its moisture content is reduced to 96%. The reduction in volume of sludge is:

Question 3

Septic tank is

Question 4

The ventilation in sewers is needed to avoid the

Question 5

When are drop manholes provided in a sewerage system?

Question 6

Critical dissolved oxygen (D.O.) deficit occurs in which one of the following zones of pollution of ‘oxygen sag curve’ in case of self- purification of natural steam?
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Jun 21AE & JE Exams