Waste Water Engineering The stone ware sewers After casting are dried and burnt at temperature 150°C, 700°C and 1200°C All listed here Are used for carrying sewage and drainage from houses Are manufactured from clays and shale After casting are dried and burnt at temperature 150°C, 700°C and 1200°C All listed here Are used for carrying sewage and drainage from houses Are manufactured from clays and shale ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The detention period for plain sedimentation water tanks, is usually 16 to 24 hours 4 to 8 hours 8 to 16 hours 24 to 36 hours 16 to 24 hours 4 to 8 hours 8 to 16 hours 24 to 36 hours ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains Hydrogen sulphide Oxygen Methane Carbon dioxide Hydrogen sulphide Oxygen Methane Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Acid regression stage of sludge digestion at a temperature 21°C extends over a period of 90 days 60 days 30 days 15 days 90 days 60 days 30 days 15 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The spacing of bars of perforations of fine screens used for the treatment of sewage, is 5 to 8 mm 2 to 3 mm 8 to 10 mm 3 to 5 mm 5 to 8 mm 2 to 3 mm 8 to 10 mm 3 to 5 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is 0.15 cumec 0.12 cumec 0.10 cumec 0.20 cumec 0.15 cumec 0.12 cumec 0.10 cumec 0.20 cumec ANSWER DOWNLOAD EXAMIANS APP
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