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A wastewater treatment plant discharges 110 m/s of treated effluent having an ultimate BOD of 50.0 mg/l. into a stream that has a flow of 8.7 m/s and a BOD of its own equal to 6.0 mg/L. The wastewater has a dissolved oxygen concentration of 2.0 mg/L. (with the same discharge rate) and the receiving stream has a DO equal to 8.3 mg/l (with the same flow rate). The deoxygenation constant, ka, is 0.20/day and the temperature is 20C. The Velocity of the stream is 0.30 m/s with a constant cross sectional area and an average depth of 3.0 m. The saturated concentration of dissolved oxygen is 9,3 mg/l. o Assuming complete and instantaneous mixing, find the BOD and DO concentration just downstream of the outfll. Find the DO deficit at the discharge point. Find the BOD and DO 10 km downstream of the discharge point Find the time downstream that the oxygen deficit is at a maximum. Find the minimum DO concentration