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solve Q2: Two, rectangular primary settling basins operating in parallel are to be designed to treat domestic wastewater following preliminary treatment. The average daily flow

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Q2: Two, rectangular primary settling basins operating in parallel are to be designed to treat domestic wastewater following preliminary treatment. The average daily flow coming into the treatment plant is 10,000m3/d and the PHF:ADF ratio is 3:1. Each basin is expected to treat 75% of the peak hourly flow with one unit out of service. State regulatory requirements stipulate the maximum overflow rate must not exceed 100m3/(dm2). The detention time should be between 1 and 2 hours at the average daily flow. The maximum weir loading rate at peak flow can not exceed 350m3/(dm). Determine the dimensions (L,W,D) of the settling basins using a L:W ratio of 4:1 to meet the design criteria. Determine the side water depth (SWD) to meet the detention time requirements. Calculate the weir length necessary to meet the weir loading condition established by the regulatory agency

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