The average daily quantity of thickened raw waste sludge produced in a municipal treatment plant is 15,000 gal containing 10,000 lb of solids. The solids arc 70% volatile,
(a) Calculate the percentage of moisture in the thickened sludge, ,
(b) Determine the volume required for a first-stage high-rate digester based on the following criteria: a maximum loading of 100 lb of volatile solids per 1000ft3/day and a minimum detention time of 15 days, ,
(c) If the volatile solids reduction in the completely mixed digester is 60%, what is the percentage of moisture in the digested sludge?
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