A single stage super-rate trickling filter is to be designed for a population of 15 000 persons. Pertinent data are average influent flow = 350 L/cap-d, influent BOD5 = 250 mg/L, primary clarifier removes 33 % of the BOD5, effluent BOD5 = 15 mg/L, filter depth = 6 m, and recycle ratio = 2. Pilot-plant studies using a synthetic plastic packing material show a removal constant K = 2.26 at 20 oC when the depth is in meters, the hydraulic loading is in m3/m2-d, and the constant n = 0.5. the winter wastewater temperature = 10 oC. If two filters are used in parallel, determine the filter diameter in meters.
A single stage super-rate trickling filter is to be designed for a population of 15 000 persons. Pertinent data are average influent flow = 350 L/cap-d, influent BOD5 = 250 mg/L, primary clarifier removes 33 % of the BOD5, effluent BOD5 = 15 mg/L, filter depth = 6 m, and recycle ratio = 2. Pilot-plant studies using a synthetic plastic packing material show a removal constant K = 2.26 at 20 oC when the depth is in meters, the hydraulic loading is in m3/m2-d, and the constant n = 0.5. the winter wastewater temperature = 10 oC. If two filters are used in parallel, determine the filter diameter in meters.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A single stage super-rate trickling filter is to be designed for a population of 15 000 persons. Pertinent data are average influent flow = 350 L/cap-d, influent BOD5 = 250 mg/L, primary clarifier removes 33 % of the BOD5, effluent BOD5 = 15 mg/L, filter depth = 6 m, and recycle ratio = 2. Pilot-plant studies using a synthetic plastic packing material show a removal constant K = 2.26 at 20 oC when the depth is in meters, the hydraulic loading is in m3/m2-d, and the constant n = 0.5. the winter wastewater temperature = 10 oC. If two filters are used in parallel, determine the filter diameter in meters.
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