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Waste Water Engineering

Waste Water Engineering
The rational formula for peak drainage discharge, was evolved by

Lloyd David
Kuichling
Fruhling
All of these

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Waste Water Engineering
It is customary to design a sewer for D.W.F. on the basis of

Four times the average demand
Thrice the average demand
Average demand
Twice the average demand

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Waste Water Engineering
For house drainage minimum gradient is

1 in 400
1 in 60
1 in 80
1 in 10

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Waste Water Engineering
In case of Imhoff tanks,

Detention period is 2 hours
The shape is rectangular
The velocity of flow is restricted to 0.30 m/minute
All of these

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

1.350 D
1.250 D
1.425 D
1.625 D

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Waste Water Engineering
In septic tanks, decomposition of organic bacteria, is done by

Anaerobic bacteria
None of these
Both types of bacterias
Aerobic bacteria

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