Waste Water Engineering The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is 0.05 0.5 0.1 0.25 0.05 0.5 0.1 0.25 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Inter-distance between ventilation columns in a sewer line is kept 25 to 50 m 50 m to 100 m 100 m to 150 m 150 m to 300 m 25 to 50 m 50 m to 100 m 100 m to 150 m 150 m to 300 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The effluent of a septic tank is As good as that from a complete treatment None of these Foul and contains dissolved and suspended solids Fit for discharge into any open drain As good as that from a complete treatment None of these Foul and contains dissolved and suspended solids Fit for discharge into any open drain ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering ‘Cowl’ is provided at Lower end of ventilating column Upper end of the manhole First step in manhole Upper end of ventilating column Lower end of ventilating column Upper end of the manhole First step in manhole Upper end of ventilating column ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the gas generally found, is All listed here Methane (CH4) Carbon dioxide (CO2) Hydrogen sulphide (H2S) All listed here Methane (CH4) Carbon dioxide (CO2) Hydrogen sulphide (H2S) ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For detecting the nitrates in sewage, the colour may be developed by adding Potassium permanganate Phenol-di -sulphuric acid and potassium hydroxide None of these Sulphuric acid and napthamine Potassium permanganate Phenol-di -sulphuric acid and potassium hydroxide None of these Sulphuric acid and napthamine ANSWER DOWNLOAD EXAMIANS APP
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