Waste Water Engineering If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is 400 mg/l 100 mg/l 300 mg/l 200 mg/l 400 mg/l 100 mg/l 300 mg/l 200 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The gradient of sewers depends upon Velocity of flow Discharge All listed here Diameter of the sewer Velocity of flow Discharge All listed here Diameter of the sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewage treatment units in which anaerobic decomposition of organic matter is used, are called Sludge sedimentation tanks Imhoff tanks Trickling filters None of these Sludge sedimentation tanks Imhoff tanks Trickling filters None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is 1000 100 10000 5000 1000 100 10000 5000 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The screens are fixed At an angle 30° to 60° to the direction of flow Perpendicular to the direction of flow Parallel to the direction of flow None of these At an angle 30° to 60° to the direction of flow Perpendicular to the direction of flow Parallel to the direction of flow None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Traps Create symphonic action to increase the quick disposal of sewerage Dissolve the foul gases Are used to trap the rats entering sewers Are water seals which prevent the entry of foul gases Create symphonic action to increase the quick disposal of sewerage Dissolve the foul gases Are used to trap the rats entering sewers Are water seals which prevent the entry of foul gases ANSWER DOWNLOAD EXAMIANS APP
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