Waste Water Engineering
For a continuous flow type of sedimentation tanks

Width of the tank is normally kept about 6 m
All listed here
Maximum horizontal flow velocity is limited to 0.3 m/minute
Length of the tank is normally kept 4 to 5 times the width

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Waste Water Engineering
Which one of the following statements regarding septic tanks is wrong?

The depth of tank is kept equal to its width
The minimum width of septic level is 90 cm
A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided
The outlet invert level is kept 5 to 7.5 cm below the inlet invert level

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