Comparison of Effluent Suspended Solid Concentrations from Two Types of Rectangular Secondary Clarifiers

Secondary clarifiers play a significant role in the successful operation of activated sludge systems. Because restriction available land, South Korean domestic wastewater treatment plants tend to employ rectangular settle mixed liquor suspended solids (MLSS) for A high MLSS concentration must be maintained bioreactor ensure nitrification during winters, and achieve stringent effluent quality. The solid (SS) concentrations two clarifier types currently being used Korea, primary clarifier-type Gould Type I secondary clarifiers, were compared using computerized fluid dynamic simulations hourly concentrations. In addition, operational data such as influent flow, daily concentrations, volume index obtained reviewed. This comparison reveals that is resilient loading variation produces with consistently lower than under similar conditions higher variations. results suggest existing converted I.