What are rotating biological contactors and how do they remove organic matter from waste water

Answer 1

Rotating biological contactors (RBCs) are a type of wastewater treatment technology that use a series of rotating discs or media to provide a surface for the growth of microorganisms that can effectively remove organic matter from wastewater.

The RBC system works by allowing wastewater to flow over the rotating discs, which are partially submerged in the water. As the discs rotate, a thin biofilm of microorganisms forms on their surface. These microorganisms feed on the organic matter in the wastewater, breaking it down into harmless byproducts.

The rotating motion of the discs helps to aerate the wastewater and facilitate the transfer of oxygen to the microorganisms, which is necessary for their metabolic processes. The rotation also helps to evenly distribute the microorganisms and ensure optimal contact with the wastewater.

Overall, RBCs are an efficient and cost-effective method for removing organic matter from wastewater, as they require less energy and maintenance compared to other treatment technologies. Additionally, they have a compact design and can be easily integrated into existing wastewater treatment plants.