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Free PE Environmental Exam Practice Questions
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Question 1 of 10Water
During an upgrade design, a 5.0 MGD activated sludge plant is being upgraded to nitrify. Design data show 210 mg/L of BOD5 removed and 25 mg/L of ammonia nitrogen oxidized to nitrate. Use 1.1 lb of oxygen per lb of BOD5 removed and 4.57 lb of oxygen per lb of ammonia nitrogen nitrified, with no denitrification credit. What oxygen demand should the aeration system supply?
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