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Waste Water Engineering

Waste Water Engineering
The liquid wastes from kitchens, bath rooms and wash basins, is not called

None of these
Liquid waste
Sewage
Sullage

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Waste Water Engineering
The sewer which received discharge from two or more main sewers, is known as

A trunk sewer
An intercepting sewer
An outfall sewer
A main sewer

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Waste Water Engineering
The normal values of over flow rates for sedimentation tanks using coagulant, ranges between

50,000 to 60,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day
80,000 to 100,000 litres/sqm/day

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Waste Water Engineering
For drainage pipes in buildings the test applied before putting them to use, is

All listed here
Water test
Straightness test
Smoke test

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Waste Water Engineering
Antisyphonage pipe is fitted

On manholes
At the end of septic tanks
With a W.'trap
At the beginning of sewer line

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Waste Water Engineering
The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is

0.5
0.25
0.1
0.05

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