Calculate the actual dissolve oxygen (DO) at a downstream location of 1500 m in a river from a waste discharge point. The relevant parameters are given below: a. The deoxygenation rate constant: 5.2 d 1 b. The reaeration rate constant: 4.1 d1 c. River flow: 0.5 m³/s d. River flow speed: 0.1 m/s e. The initial dissolved oxygen deficit in mixing zone (DO): 2 mg/L f. The saturated dissolved oxygen: 9 mg/L g. The initial ultimate BOD input in the mixing zone (Lo): 500 kg/d O 2.5 mg/L O 3.4 mg/L O 4.5 mg/L O O mg/L

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Calculate the actual dissolve oxygen (DO) at a downstream location of 1500 m in a river from a
waste discharge point. The relevant parameters are given below:
a. The deoxygenation rate constant: 5.2 d 1
b. The reaeration rate constant: 4.1 d1
c. River flow: 0.5 m³/s
d. River flow speed: 0.1 m/s
e. The initial dissolved oxygen deficit in mixing zone (DO): 2 mg/L
f. The saturated dissolved oxygen: 9 mg/L
g. The initial ultimate BOD input in the mixing zone (Lo): 500 kg/d
O 2.5 mg/L
O 3.4 mg/L
O 4.5 mg/L
O O mg/L
Transcribed Image Text:Calculate the actual dissolve oxygen (DO) at a downstream location of 1500 m in a river from a waste discharge point. The relevant parameters are given below: a. The deoxygenation rate constant: 5.2 d 1 b. The reaeration rate constant: 4.1 d1 c. River flow: 0.5 m³/s d. River flow speed: 0.1 m/s e. The initial dissolved oxygen deficit in mixing zone (DO): 2 mg/L f. The saturated dissolved oxygen: 9 mg/L g. The initial ultimate BOD input in the mixing zone (Lo): 500 kg/d O 2.5 mg/L O 3.4 mg/L O 4.5 mg/L O O mg/L
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