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Mass of Solids Formula:
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The Mass of Solids formula calculates the actual weight of solid particles present in sewage within a reactor tank. It is a fundamental calculation in wastewater treatment processes, particularly in the activated sludge process.
The calculator uses the Mass of Solids equation:
Where:
Explanation: The formula multiplies the volume of the reactor tank by the concentration of suspended solids in the mixed liquor to determine the total mass of solids present.
Details: Accurate calculation of mass of solids is crucial for process control in wastewater treatment plants, determining appropriate sludge wasting rates, and maintaining optimal treatment efficiency.
Tips: Enter the volume of reactor tank in cubic meters and mixed liquor suspended solids concentration in kg/m³. Both values must be positive numbers.
Q1: What is Mixed Liquor Suspended Solids?
A: Mixed Liquor Suspended Solids is the concentration of suspended solids in the mixed liquor of an aeration tank during the activated sludge process.
Q2: Why is mass of solids important in wastewater treatment?
A: It helps determine the amount of biological mass available for organic matter degradation and is used to calculate food-to-microorganism ratios.
Q3: How is reactor tank volume measured?
A: Reactor tank volume is typically calculated based on the tank's physical dimensions (length × width × depth) or through calibrated measurements.
Q4: What are typical values for mixed liquor suspended solids?
A: Typical values range from 1,500 to 4,000 mg/L (1.5 to 4.0 kg/m³) in conventional activated sludge processes.
Q5: How often should mass of solids be calculated?
A: Regular monitoring (daily or several times per week) is recommended for proper process control and optimization.