Chemistry, 08.05.2021 01:40, jetblackcap

An A2O process is operated with a 12 d SRT and achieves an effluent soluble P concentration of 0.5 mg/L, and effluent NO3-N concentration of 5.0 mg/L. The internal and return activated sludge (RAS) recycle ratios are 3.0 and 0.5 respectively. Determine: a) The change in effluent soluble phosphorus and NO3-N concentrations if the internal recycle ratio is changed to 2.8 and RAS ratio is increased to 1.0. (10 pts) b) How much additional rbCOD is consumed by nitrate fed to the anaerobic zone

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An A2O process is operated with a 12 d SRT and achieves an effluent soluble P concentration of 0.5 m...