What is the primary function of roughing filters in wastewater treatment?

The primary function of roughing filters in wastewater treatment is to reduce organic loading to downstream secondary treatment. Roughing filters are typically used as the first step in a treatment process. They help to remove a significant portion of suspended solids and some organic matter from the wastewater before it reaches secondary treatment stages. By removing these materials, they lower the burden on subsequent treatment options, such as biological processes, allowing for a more efficient and effective removal of remaining contaminants. This reduction in organic loading helps improve the overall performance of the treatment system, enhancing water quality before it is discharged or undergoes further treatment.