Waste Water Engineering If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is 4 hours 3 hours 5 hours 2 hours 4 hours 3 hours 5 hours 2 hours ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering As compared to fresh river water, sea water contains oxygen 20% more 20% less 10% less 10% more 20% more 20% less 10% less 10% more ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sewer ventilating columns are generally placed at Upper ends of branch sewers All listed here Every change in the size of sewers Distances 150 m to 300 m Upper ends of branch sewers All listed here Every change in the size of sewers Distances 150 m to 300 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Skimming tanks are Tanks provided with self- cleansing screens Used to remove the grease and oil Improved version of grit chambers Those from which sludge is skimmed out Tanks provided with self- cleansing screens Used to remove the grease and oil Improved version of grit chambers Those from which sludge is skimmed out ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to All of these Initial demand First stage demand Carbonaceous demand All of these Initial demand First stage demand Carbonaceous demand ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which one of the following statements regarding septic tanks is wrong? The outlet invert level is kept 5 to 7.5 cm below the inlet invert level The depth of tank is kept equal to its width The minimum width of septic level is 90 cm A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided The outlet invert level is kept 5 to 7.5 cm below the inlet invert level The depth of tank is kept equal to its width The minimum width of septic level is 90 cm A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided ANSWER DOWNLOAD EXAMIANS APP
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