Immersed membranes activated sludge process applied to the treatment of municipal wastewater

Immersed membranes activated sludge process applied to the treatment of municipal wastewater

An immersed membrane activated sludge process has been evaluated at pilot scale by Anjou Recherche. This process represents a new generation of hybrid techniques, which aims at coupling biological treatment and membrane filtration functions, in a configuration adapted to the treatment of municipal w...

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Veröffentlicht in:Water science and technology 1998-08, Vol.38 (4-5), p.437-442
Hauptverfasser: Côté, Pierre, Buisson, Hervé, Praderie, Matthieu
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container_title Water science and technology
container_volume 38
creator Côté, Pierre
Buisson, Hervé
Praderie, Matthieu
description An immersed membrane activated sludge process has been evaluated at pilot scale by Anjou Recherche. This process represents a new generation of hybrid techniques, which aims at coupling biological treatment and membrane filtration functions, in a configuration adapted to the treatment of municipal wastewater. The process was evaluated under extended aeration conditions, but with concentrations of biomass of between 15 to 25 gMLSS/l, which corresponded to volumetric loadings of between 1.2 to 2.3 kg COD/m3/d. Under these conditions, COD and TKN removal were better than 96% and 95%, respectively. The membrane ensured total removal of suspended solids and produced treated water of excellent bacteriological quality. The sludge production stabilized at 0.20 gDS/kg COD removed. The membrane flux was stable for all conditions tested.
doi_str_mv 10.2166/wst.1998.0688
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title Immersed membranes activated sludge process applied to the treatment of municipal wastewater
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