A river has the following characteristics: flow rate = 1 m/s, dissolved oxygen concentration = 8.0...

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A river has the following characteristics: flow rate = 1 m³/s, dissolved oxygen concentration = 8.0 mg/L, temperature = 18°C, BODs = 3.0 mg/L, reaeration constant at 20°C = 0.5 d1, and a cross sectional area = 400 m² (assume it is constant for the entire problem).A wastewater treatment plant discharges an effluent with the following characteristics: flow rate = 15000 m³/d, dissolved oxygen = 2 mg/L, BODs =40 mg/L, temperature = 20°C. The BOD decay rate constant is 0.2 d'¹ at 20°C. An industry illegally discharges 4000 m³/d of biodegradable liquid wastes with BODs 600 mg/L, no dissolved oxygen, and a temperature = 50°C at the same location of the wastewater treatment plant. Severe fish death has been reported, but the industry denies any wrongdoing. Can the industry be blamed for the fill kills? Find the dissolved oxygen concentration 3327 m downstream from the point of discharge with and without the industrial waste. Sketch (does not have to be exact) two sag curves on the same plot for the two scenarios (with and without the industrial waste). A river has the following characteristics: flow rate = 1 m³/s, dissolved oxygen concentration = 8.0 mg/L, temperature = 18°C, BODs = 3.0 mg/L, reaeration constant at 20°C = 0.5 d1, and a cross sectional area = 400 m² (assume it is constant for the entire problem).A wastewater treatment plant discharges an effluent with the following characteristics: flow rate = 15000 m³/d, dissolved oxygen = 2 mg/L, BODs =40 mg/L, temperature = 20°C. The BOD decay rate constant is 0.2 d'¹ at 20°C. An industry illegally discharges 4000 m³/d of biodegradable liquid wastes with BODs 600 mg/L, no dissolved oxygen, and a temperature = 50°C at the same location of the wastewater treatment plant. Severe fish death has been reported, but the industry denies any wrongdoing. Can the industry be blamed for the fill kills? Find the dissolved oxygen concentration 3327 m downstream from the point of discharge with and without the industrial waste. Sketch (does not have to be exact) two sag curves on the same plot for the two scenarios (with and without the industrial waste).

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To determine if the industrial waste discharge is responsible for the fish kills we can use the Stre... View the full answer