• Waterworks of a town treat 35 x 106 litres/day. The water is treated by coagulation-sedimentation tanks. The quantity of filter alum is consumed at 20 mg/litres of water. If the alkalinity of the raw water is equivalent to 4.5 mg/litre of CaCO3, determine the quantity of filter alum and the quick lime (containing 80% of CaO) required per month by the water works. Molecular weights are given as [Ca = 40, C = 12, S = 32, 0 = 16, Al = 27 and H=1]

• Waterworks of a town treat 35 x 106 litres/day. The water is treated by coagulation-sedimentation tanks. The quantity of filter alum is consumed at 20 mg/litres of water. If the alkalinity of the raw water is equivalent to 4.5 mg/litre of CaCO3, determine the quantity of filter alum and the quick lime (containing 80% of CaO) required per month by the water works. Molecular weights are given as [Ca = 40, C = 12, S = 32, 0 = 16, Al = 27 and H=1]

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

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Chapter2: Loads On Structures

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The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

• Waterworks of a town treat 35 x 106 litres/day. The water is treated
by coagulation-sedimentation tanks. The quantity of filter alum is
consumed at 20 mg/litres of water. If the alkalinity of the raw water is
equivalent to 4.5 mg/litre of CaCO3, determine the quantity of filter
alum and the quick lime (containing 80% of CaO) required per month
by the water works. Molecular weights are given as [Ca = 40, C = 12, S
= 32, 0 = 16, Al = 27 and H=1]

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