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Waste Water Engineering

Waste Water Engineering
The following is the physical characteristic of sewage

All listed here
Turbidity
Colour
Odour

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Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

B = 0.5 d
B = 0.2 d
d = 0.5 B
d = 0.2 B

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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

0.25
0.05
0.5
0.1

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

40,000 to 50,000 litres/sqm/day
80,000 to 10,000 litres/sqm/day
50,000 to 60,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day

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Waste Water Engineering
The sewerage system consists of

House sewer
All of these
Branch sewer
Lateral sewer

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Waste Water Engineering
The sewer which transports the sewage to the point of treatment, is called

Out-fall sewer
Branch sewer
Main sewer
House sewer

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