GATE CE 2016 Set 2 — Question 29

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NAT+1 / -0MediumSofteningDrinking Water TreatmentEnvironmental Engineering

Environmental Engineering → Drinking Water Treatment → Softening

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Question

The hardness of a ground water sample was found to be 420 mg/L as CaCO3_3. A softener containing ion exchange resins was installed to reduce the total hardness to 75 mg/L as CaCO3_3 before supplying to 4 households. Each household gets treated water at a rate of 540 L/day. If the efficiency of the softener is 100%, the bypass flow rate (expressed in L/day) is _________
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