Engineering, 05.05.2020 16:43, tae8002001

The wastewater treatment plant for Alpine City discharges 1.2×104 m3/day of treated waste to the Alpine River. Immediately upstream of the treatment plant, the Alpine River has an ultimate BOD of 3.5 mg/L and a flow of 9×105 m3/day. At a distance of 45 km downstream of the treatment plant, the Alpine River has a 5-day BOD test result of 1.73 mg/L (BOD test rate constant kBOD = 0.2/day). The river has a velocity of 18 km/day. The BOD decay coefficient is 0.1/day. The state’s Department of Environmental Quality (DEQ) has set an ultimate BOD discharge limit for the treatment plant of 1,500 kg/day. a. Is the plant in violation of the DEQ discharge limit?

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The wastewater treatment plant for Alpine City discharges 1.2×104 m3/day of treated waste to the Alp...