A stream has a temperature of 20 degrees C, a velocity of 0.5 m/s, a flow...

A stream has a temperature of 20 degrees C, a velocity of 0.5 m/s, a flow rate of 3.0 m³/s, depth of 3.0 m, saturation dissolved oxygen (DO = 9.07 mg/L), and BODu = 5 mg/L. Assume the deoxygenation constant (k) = 0.24 d^-1. Wastewater discharge flows into the stream at 0.6 m³/s and temperature of 20 degrees C, and the DO is 8.1 mg/L. The lowest DO downstream is 4.0 mg/L and it occurs at a distance of 20 km. (Assume reaeration rate, (k)₂ = 0.30 d^-1)

What is the DO concentration in the wastewater discharge (mg/L)?

What is the BODu in the wastewater discharge (mg/L)?

Solutions

Expert Solution

you have already gave the dissolve oxygen for waste water which is equal to 8.1mg/L....if there is any problem in date please comment me...thank you

Ally Wells answered 6 months ago

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