Question: Please state whether the effluent phosphorus concentration for an A2O system will increase, decrease, or remain the same for the following changes in the wastewater

Please state whether the effluent phosphorus concentration for an A2O system will increase, decrease, or remain the same for the following changes in the wastewater characteristics or process operating conditions: Explain your answers.

a. The SRT increased. b. The influent readily biodegradable COD (rbCOD) concentration increases. c. The clarifier effluent suspended solids concentration increases. d. A higher NO3-N concentration exists in the return activated sludge recycle. e. The influent particulate BOD concentration increases.

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