Waste Water Engineering For a continuous flow type of sedimentation tanks Maximum horizontal flow velocity is limited to 0.3 m/minute All listed here Length of the tank is normally kept 4 to 5 times the width Width of the tank is normally kept about 6 m Maximum horizontal flow velocity is limited to 0.3 m/minute All listed here Length of the tank is normally kept 4 to 5 times the width Width of the tank is normally kept about 6 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The digested sludge from septic tanks, is removed after a maximum period of 3.5 years 5 years 3 years 4 years 3.5 years 5 years 3 years 4 years ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is 0.20 cumec 0.15 cumec 0.10 cumec 0.12 cumec 0.20 cumec 0.15 cumec 0.10 cumec 0.12 cumec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be 1.2 m > 1.5 m 0.9 cm 1.5 m 1.2 m > 1.5 m 0.9 cm 1.5 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The coagulant which is generally not used for treating the sewage, is Chlorinated coppers Ferric sulphate Alum Ferric chloride Chlorinated coppers Ferric sulphate Alum Ferric chloride ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For house drainage minimum gradient is 1 in 400 1 in 80 1 in 60 1 in 10 1 in 400 1 in 80 1 in 60 1 in 10 ANSWER DOWNLOAD EXAMIANS APP
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