What is the main purpose of using biofilters in treatment plants?

The main purpose of using biofilters in treatment plants is to utilize microorganisms for the biodegradation of pollutants. Biofilters operate by allowing wastewater to pass through a medium that contains a diverse population of microorganisms. These microorganisms break down organic matter and other contaminants in the water, converting them into simpler, less harmful substances. This biological treatment process is crucial for reducing biochemical oxygen demand (BOD) and removing nutrients such as nitrogen and phosphorus from the wastewater, thereby improving the overall quality of the treated water before it is discharged or reused.

While energy efficiency, aesthetics, and the removal of large solids are important aspects of wastewater treatment, they are not the primary function of biofilters. The focus of biofilters is on the biological interaction between the microorganisms and the pollutants, making them an essential component of advanced treatment technologies in wastewater management. Through this process, biofilters contribute significantly to achieving environmental compliance and ensuring public health safety.