Waste Water Engineering Pick up the incorrect statement from the following for allowing workers to enter sewers Proper tests for the presence of poisonous gases must be carried out The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes The men entering the manhole should be advised to smoke in the sewer Warning signals should be erected Proper tests for the presence of poisonous gases must be carried out The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes The men entering the manhole should be advised to smoke in the sewer Warning signals should be erected ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The water carried sewerage system removes Storm sewage All listed here Domestic sewage Industrial sewage Storm sewage All listed here Domestic sewage Industrial sewage ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic bacterias All of these Oxidise organic matter in sewage Consume organic matter as their food Flourish in the presence of free oxygen All of these Oxidise organic matter in sewage Consume organic matter as their food Flourish in the presence of free oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is 208 cu.m 212 cu.m 204 cu.m 216 cu.m 208 cu.m 212 cu.m 204 cu.m 216 cu.m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is 400 mg/l 300 mg/l 200 mg/l 100 mg/l 400 mg/l 300 mg/l 200 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Acid regression stage of sludge digestion at a temperature 21°C extends over a period of 90 days 15 days 60 days 30 days 90 days 15 days 60 days 30 days ANSWER DOWNLOAD EXAMIANS APP
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