Reactor Volume Formula:
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Definition: This calculator determines the required volume of a reactor in wastewater treatment systems when the concentration of solids in the effluent is low.
Purpose: It helps environmental engineers design and optimize activated sludge systems in wastewater treatment plants.
The calculator uses the formula:
Where:
Explanation: The formula calculates reactor volume based on the sludge wasting rate and concentration parameters.
Details: Proper reactor sizing ensures efficient biological treatment, proper sludge age maintenance, and compliance with effluent quality standards.
Tips: Enter the mean cell residence time, WAS pumping rate, sludge concentration in return line, and MLSS values. All values must be > 0.
Q1: What is Mean Cell Residence Time?
A: Also called sludge age, it's the average time that microorganisms stay in the system.
Q2: What is WAS Pumping Rate?
A: Waste Activated Sludge pumping rate is the flow rate of excess sludge being removed from the system.
Q3: What is typical MLSS concentration?
A: Typically ranges between 1.5-4 kg/m³ in conventional activated sludge systems.
Q4: When is this formula applicable?
A: Specifically for cases where the concentration of solids in the effluent is negligible compared to the return sludge concentration.
Q5: How does reactor volume affect treatment?
A: Larger volumes provide more contact time for biological treatment but require more energy for mixing and aeration.