Determine the concentration of effluent BODs from the two-stage trickling filter described below. The wastewater temperature...

   

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Determine the concentration of effluent BODs from the two-stage trickling filter described below. The wastewater temperature is 17°C. Assume the NRC equations apply. Q = 0.05 m³/s Influent BOD5 = 260 mg/L Filter diameter = 24 m (both filters) Filter depth = 1.83 m (both filters) Recirculation rate for each filter = 0.055 m³/d Plot two graphs of the final effluent BODs concentration from the two-stage filter described in Problem 1 (same C, and filter sizes) as a function of the influent flow rate, Q, and the recirculation rate, R, assuming the NRC equations apply. In the first graph, plot the final effluent BOD, concentration (as a fraction of the influent concentration, C/Co) as a function of influent flow rate over a range of flow from 0.02 m³/s ≤ Q≤ 0.10 m³/s while keeping the recirculation rate constant at R = QR/Q = 1. The second plot should show the final effluent BOD, concentration from the two-stage filter (as a fraction of the influent concentration, C/C.) over a range of recirculation rates of 1 ≤R ≤ 10 for a constant flow rate of Q = 0.05 m³/s. Assume the water temperature is 20°C for the estimations. Determine the concentration of effluent BODs from the two-stage trickling filter described below. The wastewater temperature is 17°C. Assume the NRC equations apply. Q = 0.05 m³/s Influent BOD5 = 260 mg/L Filter diameter = 24 m (both filters) Filter depth = 1.83 m (both filters) Recirculation rate for each filter = 0.055 m³/d Plot two graphs of the final effluent BODs concentration from the two-stage filter described in Problem 1 (same C, and filter sizes) as a function of the influent flow rate, Q, and the recirculation rate, R, assuming the NRC equations apply. In the first graph, plot the final effluent BOD, concentration (as a fraction of the influent concentration, C/Co) as a function of influent flow rate over a range of flow from 0.02 m³/s ≤ Q≤ 0.10 m³/s while keeping the recirculation rate constant at R = QR/Q = 1. The second plot should show the final effluent BOD, concentration from the two-stage filter (as a fraction of the influent concentration, C/C.) over a range of recirculation rates of 1 ≤R ≤ 10 for a constant flow rate of Q = 0.05 m³/s. Assume the water temperature is 20°C for the estimations.

Answer rating: 100% (QA)

Given Influent BOD5 260 mgL Filter diameter 24 m both filters Filter depth 183m both filters Rec... View the full answer