How is MLSS measured in wastewater treatment plants?

MLSS in wastewater treatment is measured by collecting a sample from the aeration tank, filtering it, and drying the residue at 103-105°C to determine the suspended solids concentration. The dried sample is weighed, and the MLSS value is expressed in mg/L. This measurement helps assess microbial activity and sludge concentration in the aeration process. Proper MLSS monitoring ensures optimal treatment efficiency, preventing issues like sludge bulking or poor effluent quality. Maintaining appropriate MLSS levels is crucial for stable and effective wastewater treatment operations.