Dive into the 2025 NY Wastewater Exam – Flush Away the Competition with Confidence!

A trickling filter plays a crucial role in the biological treatment of wastewater. The primary function of a trickling filter is to promote the growth of microorganisms on a media surface, effectively allowing these organisms to biofilm on stones, plastic media, or other materials with a large surface area. As wastewater passes over this media, the microorganisms feed on the organic matter present in the wastewater, breaking it down biologically.

This biological treatment process is essential for reducing the concentration of contaminants in the wastewater before it moves on to subsequent treatment stages. The trickling filter enhances overall treatment efficiency, leading to a more effective reduction of biochemical oxygen demand (BOD) and other organic pollutants. Thus, the focus on promoting biological treatment highlights the vital role that trickling filters play in achieving cleaner effluent and meeting regulatory standards for wastewater discharge.