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Waste Water Engineering

Waste Water Engineering
The rate of accumulation of sludge per person per year, is

25 litres
15 litres
20 litres
10 litres

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Waste Water Engineering
The flow velocity in detritus tanks is

0.05 m/sec
1.25 m/sec
0.09 m/sec
None of these

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Waste Water Engineering
Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for

Unexpected increase in the population
Under estimates of maximum and average flows
Unexpected large scale infiltration of stream water
All of these

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Waste Water Engineering
The gas which may cause explosion in sewers, is

Ammonia
Methane
Carbondioxide
Carbon monoxide

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Waste Water Engineering
The sewage treatment in septic tanks is due to

Anaerobic decomposition
Aerobic decomposition
None of these
Parasitic decomposition

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Waste Water Engineering
Lead caulked joints are used for laying

G.I. pipes
Stone ware pipes
I. pipes
Earthenware pipes

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