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A 100 mL water sample collected from the activated-sludge process

Question : A 100 mL water sample collected from the activated-sludge process : 19633

A 100 mL water sample is collected from the activated-sludge process of municipal wastewater treatment. The sample is placed in a drying dish (weight = 0.5000 g before the sample is added) and then placed in an oven at 104 degree C until all moisture is evaporated. The weight of the dried dish is recorded as 0.5625 g. A similar 100 mL sample is filtered, and the 100 mL liquid sample that passes through the filter is collected and placed in another drying dish (weight = 0.5000 g before the sample is added). This sample is dried at 104 degree C, and the dried dish's weight is recorded as 0.5325 g. Determine the concentration (in mg/L) of (a) total solids, (b) total suspended solids, (c) total dissolved solids, and (d) volatile suspended solids. (Assume VSS = 0.7 times TSS.)

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