Waste Water Engineering During preliminary treatment of a sewage Girt and sand are removed by girt chambers All listed here Oil and grease are removed from skimming tanks Floating materials are removed by screening Girt and sand are removed by girt chambers All listed here Oil and grease are removed from skimming tanks Floating materials are removed by screening ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The maximum depth of sedimentation tanks, is kept 3.5 m 3 m 4 m 4.5 m 3.5 m 3 m 4 m 4.5 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Lead acetate test in sewer manhole is done to test the presence of Carbondioxide gas Hydrogen sulphide Methane gas Diesel vapours Carbondioxide gas Hydrogen sulphide Methane gas Diesel vapours ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter Less than 0.05 mm Greater than 0.1 mm Less than 0.01 mm Less than 0.1 mm Less than 0.05 mm Greater than 0.1 mm Less than 0.01 mm Less than 0.1 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is 2 4 1.5 3 2 4 1.5 3 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering depends upon The Chezy’s constant C in the formula V = C Shape of the sewer Roughness of sewer surface All listed here Size of the sewer Shape of the sewer Roughness of sewer surface All listed here Size of the sewer ANSWER DOWNLOAD EXAMIANS APP
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