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 200 mg/l 400 mg/l 100 mg/l 300 mg/l 200 mg/l 400 mg/l 100 mg/l 300 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering An inverted siphon is designed generally for Two pipes One pipe Three pipes Four pipes Two pipes One pipe Three pipes Four pipes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed 2 3 2.5 1.5 2 3 2.5 1.5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering During preliminary treatment of a sewage Oil and grease are removed from skimming tanks Girt and sand are removed by girt chambers All listed here Floating materials are removed by screening Oil and grease are removed from skimming tanks Girt and sand are removed by girt chambers All listed here Floating materials are removed by screening ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is 40 cm 20 cm 25 cm 50 cm 40 cm 20 cm 25 cm 50 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering ¾th or ¼th extra space is left in sewer pipes at maximum discharge for Unexpected increase in population Large scale infiltration of storm water All listed here Low estimates of the average and maximum flows Unexpected increase in population Large scale infiltration of storm water All listed here Low estimates of the average and maximum flows ANSWER DOWNLOAD EXAMIANS APP
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