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 150 cm 120 cm 110 cm 100 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the discharge of a sewer running half is 628 1.p.s., i = 0.001, and n = 0.010, the diameter of the sewer, is 1.49 m 1.59 m 1.69 m 1.39 m 1.49 m 1.59 m 1.69 m 1.39 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering As compared to fresh river water, sea water contains oxygen 20% less 10% more 10% less 20% more 20% less 10% more 10% less 20% more ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of Recovery Active decomposition Cleaner water Degradation Recovery Active decomposition Cleaner water Degradation ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Skimming tanks are Improved version of grit chambers Used to remove the grease and oil Those from which sludge is skimmed out Tanks provided with self- cleansing screens Improved version of grit chambers Used to remove the grease and oil Those from which sludge is skimmed out Tanks provided with self- cleansing screens ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is 1 in 100 upward 1 in 500 upward 1 in 503 upward 1 in 100 downward 1 in 100 upward 1 in 500 upward 1 in 503 upward 1 in 100 downward ANSWER DOWNLOAD EXAMIANS APP
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