Oxygen Transferred Formula:
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Definition: This calculator determines the actual amount of oxygen transferred in wastewater treatment systems under field conditions when the correction factor is 0.8.
Purpose: It helps environmental engineers and wastewater treatment professionals optimize aeration systems.
The calculator uses the formula:
Where:
Explanation: The formula accounts for oxygen transfer capacity, saturation levels, operating conditions, and temperature effects.
Details: Accurate oxygen transfer calculations are crucial for designing efficient aeration systems that maintain proper dissolved oxygen levels for biological treatment processes.
Tips: Enter the oxygen transfer capacity, D.O. saturation at 0.8 correction factor, operating dissolved oxygen level, and temperature. All values must be valid positive numbers.
Q1: Why is the correction factor 0.8 used?
A: The 0.8 correction factor accounts for the difference between clean water and wastewater conditions in oxygen transfer efficiency.
Q2: How does temperature affect oxygen transfer?
A: Higher temperatures decrease oxygen solubility but increase transfer rates, accounted for by the (1.024)^(T-20) term.
Q3: What are typical values for DO0.8?
A: This varies with altitude and temperature, but typically ranges from 7-9 mg/L (0.007-0.009 kg/m³) for wastewater.
Q4: Why divide by 9.17 in the formula?
A: This conversion factor relates the units of measurement (kg/s/W) to standard conditions.
Q5: How can I improve oxygen transfer efficiency?
A: Methods include optimizing diffuser placement, maintaining proper mixing, and controlling dissolved oxygen levels.