Rotating biological contactor | Wikipedia audio article
Channel: wikipedia tts
Date: 28/12/2018

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Rotating_biological_contactor


00:01:09 1 Operation
00:03:53 2 History
00:06:28 3 Secondary clarification
00:07:09 4 See also



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SUMMARY
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A rotating biological contactor or RBC is a biological treatment process used in the treatment of wastewater following primary treatment. The primary treatment process means protection by removal of grit and sand and coarse material through a screening process, followed by a removal process of sediment by settling. The RBC process involves allowing the wastewater to come in contact with a biological medium in order to remove pollutants in the wastewater  before discharge of the treated wastewater to the environment, usually a body of water (river, lake or ocean). A rotating biological contactor is a type of secondary (Biological) treatment process. It  consists of a series of closely spaced, parallel discs mounted on a rotating shaft which is supported just above the surface of the waste water. Microorganisms grow on the surface of the discs where biological degradation of the wastewater pollutants takes place.