In a wastewater treatment plant, the supply of oxygen supply is 073 kgO2/h is necessary underoperating conditions, using a mechanical aeration system. Calculate theStandard Oxygen Transfer Rate. Using relevant data: Liquid temperature: T = 23 ◦C, Altitude = 1000 m, DO concentration to be maintained in the liquid CL = 1.5 mg/L, α = 0.90, β = 0.95, θ = 1.024 (Note: calculate the required value if it is missing)
In a wastewater treatment plant, the supply of oxygen supply is 073 kgO2/h is necessary underoperating conditions, using a
Given data:
oxygen supply under operating conditions, Ns = 73 kgO2 /kwh = 73 MJ
Liquid temperature: T = 23 ◦C
DO concentration to be maintained in the liquid, CL = 1.5 mg/L
Correction factor for oxygen transfer, α = 0.90
To find:
Standard Oxygen Transfer Rate, N
Solution:
Dissolved oxygen saturation value at 23 C, Cs = 9.2 mg/L
Standard Oxygen Transfer Rate is given by formula,
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