Trickling and Rotating Biological Contactor (RBC) Filter

Trickling filters and rotating biological contactor filters are two common technologies used in wastewater treatment plants to remove organic matter and pollutants from wastewater. Trickling filters are designed as a bed of coarse media, such as rocks or plastic media, over which wastewater is sprinkled or “trickled” to provide a large surface area for microbial growth. This microbial growth breaks down organic matter in the wastewater, converting it into carbon dioxide, water, and biomass. The efficiency of trickling filters in removing pollutants is determined by factors such as media type, hydraulic loading rate, and temperature.

Rotating biological contactor filters, on the other hand, consist of one or more discs that are partially submerged in wastewater. These discs are covered with a biofilm of microorganisms that break down organic matter as they rotate through the wastewater. The rotating motion of the discs provides oxygen to the microorganisms and prevents the biofilm from becoming too thick, which could hinder the treatment process. Rotating biological contactor filters are effective in removing organic matter and pollutants from wastewater and are often used in small to medium-sized treatment plants.

Both trickling filters and rotating biological contactor filters are considered cost-effective and environmentally friendly methods of treating wastewater. They require relatively low energy input and produce minimal sludge compared to other treatment technologies. However, it is important to consider factors such as maintenance requirements, operation costs, and effluent quality when choosing between these two technologies for a wastewater treatment plant. Overall, trickling filters and rotating biological contactor filters play a vital role in improving water quality