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What is the minimum dissolved oxygen concentration

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Reference no: EM132454401

Problem question 1:

  • A wastewater treatment plant discharges to a receiving stream. After mixing of the wastewater effluent and the receiving stream, the following data apply: COD5= 6 mg/L
  • BOD5 = 8 mg/L o BOD ult= 10 mg/L o Wastewater Temperature: 24?C
  • Upstream Temperature: 18?C o Downstream Temperature: 20?C Reaeration constant (Base e at 20?C)= 0.40 1/d Deoxygenation Constant (Base e at 20?C)= 0.23 1/d Reaeration Temperature Coefficient = 1.024 Deoxygenation Temperature Constant = 1.047 Dissolved Oxygen = 6 mg/L Stream Velocity = 1 fps

Question 1: Assuming the time of travel required to achieve the maximum dissolved oxygen deficit in the stream is 3 days, what is the minimum dissolved oxygen concentration (mg/L) in the river? [Answer: 6.2]

Reference no: EM132454401

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