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[15 points] Jar tests have indicated that 80mg/L of alum are required to coagulate water for drinking water treatment. The source water contains 180mg/L alkalinity

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[15 points] Jar tests have indicated that 80mg/L of alum are required to coagulate water for drinking water treatment. The source water contains 180mg/L alkalinity as CaCO3 and 10mg/L of suspended solids. The treatment plant capacity is 0.5m3/s. How much alkalinity remains in the water after coagulation

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