What can an increase in inflow to the activated sludge basin achieve regarding filamentous organisms?

An increase in inflow to the activated sludge basin can effectively flush out filamentous organisms. In activated sludge processes, filamentous organisms are often responsible for poor settleability and can lead to issues such as bulking sludge. When there is an increase in flow, it can increase the shear force and hydraulic retention time, which can help carry these filamentous organisms out of the system.

Additionally, increased inflow typically results in a dilution effect, where the concentration of filamentous organisms is lowered compared to the overall volume of mixed liquor. This dynamic allows for better management of filamentous growth and helps maintain the desired balance of microorganisms in the reactor. Proper control of filamentous organisms is essential for the operational efficiency of wastewater treatment and achieving optimal effluent quality, as these organisms can cause issues if not adequately managed.