Phosphorous is considered as one of the limiting factors of eutrophication in lakes and rivers. The...

  

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Phosphorous is considered as one of the limiting factors of eutrophication in lakes and rivers. The goal of a pilot plant study is to treat phosphorous from influent wastewater. The process involves a CSTR that removes phosphorus according to second order kinetics with a k value of 5.2 . The CSTR has a flow rate of 520 L/d, a volume of 90 L and an initial concentration mg.d of 3.5 mg P/L. a) Derive the HRT equation for the second order CSTR b) If the effluent P concentration to prevent eutrophication is 0.03 mg P/L, do the current parameters meet this goal? c) If the flow rate were to be decreased by 30% and volume of CSTR increased to 130L, what is the new effluent P concentration? Phosphorous is considered as one of the limiting factors of eutrophication in lakes and rivers. The goal of a pilot plant study is to treat phosphorous from influent wastewater. The process involves a CSTR that removes phosphorus according to second order kinetics with a k value of 5.2 . The CSTR has a flow rate of 520 L/d, a volume of 90 L and an initial concentration mg.d of 3.5 mg P/L. a) Derive the HRT equation for the second order CSTR b) If the effluent P concentration to prevent eutrophication is 0.03 mg P/L, do the current parameters meet this goal? c) If the flow rate were to be decreased by 30% and volume of CSTR increased to 130L, what is the new effluent P concentration?