Consider a lake with 100 × 106 m2 of surface area for which the only source of phosphorus is the effluent from a wastewater treatment plant. The effluent flow rate is 0.4 m3 /s, and its phosphorous concentration is 10 mg/L. The lake is also fed by a stream having 20 m3 /s of flow with no phosphorous. If the phosphorous settling rate is estimated to be 10 m/yr, estimate the average phosphorous concentration in the lake. What level of phosphorous removal at the treatment plant would be required to keep the average concentration below 0.010 mg/L
Consider a lake with 100 × 106 m2 of surface area for which the only source of phosphorus is the effluent from a wastewater treatment plant. The effluent flow rate is 0.4 m3 /s, and its phosphorous concentration is 10 mg/L. The lake is also fed by a stream having 20 m3 /s of flow with no phosphorous. If the phosphorous settling rate is estimated to be 10 m/yr, estimate the average phosphorous concentration in the lake. What level of phosphorous removal at the treatment plant would be required to keep the average concentration below 0.010 mg/L
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Consider a lake with 100 × 106 m2 of surface area for which the only source of phosphorus is the effluent from a wastewater treatment plant. The effluent flow rate is 0.4 m3 /s, and its phosphorous concentration is 10 mg/L. The lake is also fed by a stream having 20 m3 /s of flow with no phosphorous. If the phosphorous settling rate is estimated to be 10 m/yr, estimate the average phosphorous concentration in the lake. What level of phosphorous removal at the treatment plant would be required to keep the average concentration below 0.010 mg/L?
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