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Waste Water Engineering

Waste Water Engineering
House connections to the laterals is generally made by

P.C.C.
Glazed stonewares
R.C.C.
Cast iron

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Waste Water Engineering
If q is the average sewage flow from a city of population P, the maximum sewage flow

Q = [(18 + )/(4 + )] q
Q = [(18 + P)/(4 + )] q
Q = [(4 + )/(18 + )] q
Q = [(5 + )/((15 + )] q

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Waste Water Engineering
If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is

3 hours
5 hours
4 hours
2 hours

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Waste Water Engineering
The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is

1 hour and 30 minutes
2 hours
30 minutes
1 hour

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Waste Water Engineering
Oxidation process results in the formation of

All of these
Carbon dioxide
Sulphates
Nitrates

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Surface water
Ground water
Storm sewage
Sanitary sewage

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