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 A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is 2.50 m 2.40 m 2.30 m 2.45 m 2.50 m 2.40 m 2.30 m 2.45 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes at the junctions of sewer lines, are provided if Invert level of a branch sewer is more than 60 cm that of the main sewer Sewer line runs along a main road Ordinary manhole cannot be built Two sewer lines intersect Invert level of a branch sewer is more than 60 cm that of the main sewer Sewer line runs along a main road Ordinary manhole cannot be built Two sewer lines intersect ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is 4 1.5 3 2 4 1.5 3 2 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 0.12 cumec 0.10 cumec 0.15 cumec 0.20 cumec 0.12 cumec 0.10 cumec 0.15 cumec 0.20 cumec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For design purposes, the normal rate of infiltration of ground water into the sewer, is 2000 litres/km/cm 1500 litres/km/cm 500 litres/km/cm 1000 litres/km/cm 2000 litres/km/cm 1500 litres/km/cm 500 litres/km/cm 1000 litres/km/cm ANSWER DOWNLOAD EXAMIANS APP
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