Waste Water Engineering The normal values of over flow rates for sedimentation tanks using coagulant, ranges between 25,000 to 35,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day 25,000 to 35,000 litres/sqm/day 40,000 to 50,000 litres/sqm/day 50,000 to 60,000 litres/sqm/day 80,000 to 100,000 litres/sqm/day ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The coagulant which is generally not used for treating the sewage, is Ferric chloride Alum Chlorinated coppers Ferric sulphate Ferric chloride Alum Chlorinated coppers Ferric sulphate ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known Bio-Chemical Oxygen Demand (B.O.D.) Chemical Oxygen Demand (C.O.D.) Dissolved Oxygen (D.O.) None of these Bio-Chemical Oxygen Demand (B.O.D.) Chemical Oxygen Demand (C.O.D.) Dissolved Oxygen (D.O.) None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most efficient cross section of sewers in a separate sewerage system is Rectangular New egged Parabolic Circular Rectangular New egged Parabolic Circular ANSWER DOWNLOAD EXAMIANS APP
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 Warning signals should be erected The men entering the manhole should be advised to smoke in the sewer 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 Warning signals should be erected The men entering the manhole should be advised to smoke in the sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In 1000 kg of sewage, the total solids approximate 0.5 to 1.0 kg 7.5 kg to 10 kg 1 kg to 2.0 kg 5 kg to 7.5 kg 0.5 to 1.0 kg 7.5 kg to 10 kg 1 kg to 2.0 kg 5 kg to 7.5 kg ANSWER DOWNLOAD EXAMIANS APP