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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 6
6.
In normal conditions, the period for sludge digestion, is
10 days
20 days
30 days
60 days
90 days.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope
1 in 5
1 in 10
1 in 15
1 in 20
1 in 25
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
For a continuous flow type of sedimentation tanks
width of the tank is normally kept about 6 m
length of the tank is normally kept 4 to 5 times the width
maximum horizontal flow velocity is limited to 0.3 m/minute
capacity of the tank for 24 hours, is kept equal to maximum daily flow of sewage
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
The temperature affects the
biological activity of bacterias in sewage
solubility of gases in sewage
viscosity of sewage
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Which of the following pumps in used to pump sewage solids with liquid sewage without clogging the pump is
centrifugal pump
pneumatic ejector
reciprocating pump
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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