8) A factory discharges its wastewater into a river flowing at a velocity of 5 km/day. After mixing with the wastewater

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8) A factory discharges its wastewater into a river flowing at a velocity of 5 km/day. After mixing with the wastewater

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8 A Factory Discharges Its Wastewater Into A River Flowing At A Velocity Of 5 Km Day After Mixing With The Wastewater 1
8 A Factory Discharges Its Wastewater Into A River Flowing At A Velocity Of 5 Km Day After Mixing With The Wastewater 1 (22.09 KiB) Viewed 34 times
8) A factory discharges its wastewater into a river flowing at a velocity of 5 km/day. After mixing with the wastewater the river has an ultimate BOD of 15 mg/L. the initial dissolved oxygen concentration is 8.2 mg/L and the saturation concentration is 8.9 mg/L. The reaeration rate is 2.2/day and the deoxygenation rate constant is 0.1/day. At what distance (in km) is the dissolved oxygen at its minimum concentration (critical distance)? 9) What is the concentration of dissolved oxygen 10 km downstream from the discharge?
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