Waste Water Engineering
The sewage discharge in a detritus tank of a treatment plant is 576 litres/sec with flow velocity of 0.2 m/sec. If the ratio of width to depth is 2, the depth is

150 cm
120 cm
110 cm
100 cm

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Waste Water Engineering
In septic tanks,

The clear space between the baffle top and covering slab is about 7.5 cm
Free board of 0.3 m may be provided
All listed here
The baffles or tees are extended up to top level of scum

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