Waste Water Engineering The recommended detention period for grit chambers is 1 minute 2 minutes 3 minutes 5 minutes 1 minute 2 minutes 3 minutes 5 minutes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the grit in grit chambers is 4.5 million litres per day, its cleaning is done Manually Electrically Mechanically Hydraulically Manually Electrically Mechanically Hydraulically ANSWER DOWNLOAD EXAMIANS APP
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 300 mg/l 400 mg/l 100 mg/l 200 mg/l 300 mg/l 400 mg/l 100 mg/l 200 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Acid regression stage of sludge digestion at a temperature 21°C extends over a period of 30 days 15 days 90 days 60 days 30 days 15 days 90 days 60 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering At the junction of sewers None of these Top of smaller sewer is kept lower Top of larger sewer is kept lower Tops of both the sewers are at the same level None of these Top of smaller sewer is kept lower Top of larger sewer is kept lower Tops of both the sewers are at the same level ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The grit chambers of sewage treatment plants, are generally cleaned after 7 days 2 days 12 days 14 days 7 days 2 days 12 days 14 days ANSWER DOWNLOAD EXAMIANS APP