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Lithotrophic microorganisms are employed to oxidize ammonium in a wastewater to nitrate under aerobic conditions in...

Lithotrophic microorganisms are employed to oxidize ammonium in a wastewater to nitrate under aerobic conditions in order to reduce the oxygen consumption by nitrification in a receiving stream. If the concentration of ammonium in the wastewater, expressed as nitrogen, is 22 mg/L, how much oxygen will be consumed for nitrification in the treatment of 1,000 m3 of wastewater, what mass of cells in kg dry weight will be produced, and what will be the resulting concentration of nitrate-nitrogen in the treated water? Assume fs equals 0.10 and that inorganic carbon is used for cell synthesis.

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