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Question 1

Sludge treatment is mainly done in order to:

Question 2

The bacterias which require oxygen for their survival is known as:

Question 3

In the activated sludge process sludge volume index is used to decide

Question 4

If initial Dissolved Oxygen (DO) and final DO after 5 days incubation at 20°C in 1.0% dilution sample are 5.0 mg/L and 4.0 mg/L respectively, what is 5-days BOD of the same sample in mg/L?

Question 5

Aerobic bacteria:

Question 6

The minimum size of RCC manhole cover in a sewer system is

Question 7

‘if B.O.D. of waste water sample after 5 days incubation at 20° C is 100 mg/l, deoxygenation rate constant at 20° C is 0.1 per day, ultimate B.O.D. will be

Question 8

Activated sludge process is an

Question 9

A solution has 100 mg/L NH3 and 100 mg/L glucose. Calculate theoretical oxygen demand of this solution?

Question 10

The units in which both sedimentation & digestion process of sludge take places simultaneously is
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Feb 11AE & JE Exams