Question: please i need to answer this question After treating the wastewater from the municipality of tripoli, we need to design an anaerobic sludge digestion system

please i need to answer this question

After treating the wastewater from the municipality of tripoli, we need to design an anaerobic sludge digestion system to handle 6000 gallons/day of sludge produced with a 4 % solids concentration with a volatile content of 78.5 % Assuming the following: Detention time: 50 days cylinder Diameter: 60 feet Cone depth: 4 feet Determine SWD of the digester, organic loading rate, and efficiency knowing that digested volatile solids in approx 40% Select one: O a. None of the answers are correct O b. SWD=13m. ORL=0.38, and EFF=819 O C. SWD-12.85 cm, ORL=0.04, and EFF=829 O d. SWD=12.85 m ORL=0.04, and EFF= 82%

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