EXAMIANS
Kjeldahl nitrogen is a mixture of
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For a continuous flow type of sedimentation tanks
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The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is
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The most widely used pump for lifting sewage is
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The pH value of sewage is determined with the help of
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An inverted siphon is designed generally for
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A rain sanitary sewer is constructed to carry
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In a sedimentation tank (length L, width B, depth D) the settling velocity of a particle for a discharge Q, is
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In sewers the highest non-scouring velocity is achieved in
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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
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