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2. Enhanced biological phosphorus removal - Wikipedia

   en.wikipedia.org/wiki/Enhanced_biological...

   Enhanced biological phosphorus removal (EBPR) is a sewage treatment configuration applied to activated sludge systems for the removal of phosphate. [ 1 ] The common element in EBPR implementations is the presence of an anaerobic tank (nitrate and oxygen are absent) prior to the aeration tank. Under these conditions a group of heterotrophic ...

3. Polyphosphate-accumulating organisms - Wikipedia

   en.wikipedia.org/wiki/Polyphosphate-accumulating...

   Polyphosphate-accumulating organisms (PAOs) are a group of microorganisms that, under certain conditions, facilitate the removal of large amounts of phosphorus from their environments. The most studied example of this phenomenon is in polyphosphate-accumulating bacteria (PAB) found in a type of wastewater processing known as enhanced biological ...

4. Chemical phosphorus removal - Wikipedia

   en.wikipedia.org/wiki/Chemical_phosphorus_removal

   Chemical phosphorus removal is a wastewater treatment method, where phosphorus is removed using salts of aluminum (e.g. alum or polyaluminum chloride), iron (e.g. ferric chloride), or calcium (e.g. lime). Phosphate forms precipitates with the metal ions and is removed together with the sludge in the separation unit (sedimentation tank ...

5. Candidatus Accumulibacter phosphatis - Wikipedia

   en.wikipedia.org/wiki/Candidatus_Accumulibacter...

   Candidatus Accumulibacter phosphatis (CAP) is an unclassified type of Betaproteobacteria that is a common bacterial community member of sewage treatment and wastewater treatment plants performing enhanced biological phosphorus removal (EBPR) [1] and is a polyphosphate-accumulating organism. The role of CAP in EBPR was elucidated using culture ...

6. Membrane bioreactor - Wikipedia

   en.wikipedia.org/wiki/Membrane_bioreactor

   Besides phosphorus precipitation, enhanced biological phosphorus removal can be implemented which requires an additional anaerobic process step. Some characteristics for membrane bioreactor technology render enhanced biological phosphorus removal in combination with post-denitrification an attractive alternative that achieves very low nutrient ...

7. Activated sludge - Wikipedia

   en.wikipedia.org/wiki/Activated_sludge

   The white bubbles are due to the diffused air aeration system. The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa. It is one of several biological wastewater treatment alternatives in secondary ...