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Penn State’s wastewater treatment plant handles 10 MGD. The influent to the primary clarifier has 400...

Penn State’s wastewater treatment plant handles 10 MGD. The influent to the primary clarifier has 400 mg/L solids. The primary clarifier does a great job of removing solids, taking out 27%. The sludge flows at a rate of 0.01 MGD. a. What is the solids concentration of the primary clarifiers sludge? B. What total mass of solids (in kg/year) heads to the landfill from the primary clarifier?

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Answer #1

a). solids concentration = 0.73 (400) - 292 mg/L.. 6) Total mass of solida - Q (MGO) xC (mg/L) XS 34 = 0.01 (400-292)x8.34 a

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