Compact tertiary treatment based on the combination of MBBR and contained hollow fibre UF-membranes

The paper describes a tertiary treatment method (intended for water reuse) based on the moving bed biofilm reactor (MBBRTM), followed by a high-rate biomass separation step such as disc filter, DAF or Actifl o and followed by UF. Results from an experimental period carried out in pilot scale at the...

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Veröffentlicht in:Desalination and water treatment 2012-04, Vol.42 (1-3), p.80-86
Hauptverfasser: ØDEGAARD, Hallvard, MENDE, Ulrich, SKJERPING, Eirik Olsen, SIMONSEN, Simon, STRUBE, Rune, BUNDGAARD, Erik
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container_end_page 86
container_issue 1-3
container_start_page 80
container_title Desalination and water treatment
container_volume 42
creator ØDEGAARD, Hallvard
MENDE, Ulrich
SKJERPING, Eirik Olsen
SIMONSEN, Simon
STRUBE, Rune
BUNDGAARD, Erik
description The paper describes a tertiary treatment method (intended for water reuse) based on the moving bed biofilm reactor (MBBRTM), followed by a high-rate biomass separation step such as disc filter, DAF or Actifl o and followed by UF. Results from an experimental period carried out in pilot scale at the Gardermoen WWTP in Norway are described. Focus was on the use of the Hydrotech disc filter in combination with a contained, hollow fiber, outside-in ultrafiltration membrane unit. Different coagulation scenarios were tested and compared to the one based on the effluent from the full scale plant that uses coagulation/flocculation and DAF after the MBBR. It is concluded that the MBBR - high rate separation - UF process (the TERFLEX® process) offers an interesting and competitive alternative to the activated sludge based MBR. The best result when the UF membrane was used after primary biomass separation by DAF. The use of disc fi lter as the high rate biomass process ahead of the UF offers a very compact solution.
doi_str_mv 10.1080/19443994.2012.683145
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source Alma/SFX Local Collection
subjects Activated sludge
Applied sciences
Biofilms
Biomass
Bioreactors
Coagulation
Discs
Disks
Exact sciences and technology
Filters (fluid)
Flocculation
Hollow fiber membranes
Membranes
Pollution
Separation
Sludge
Tertiary
Ultrafiltration
Wastewater treatment plants
Water reuse
Water treatment and pollution
Water treatment plants
title Compact tertiary treatment based on the combination of MBBR and contained hollow fibre UF-membranes
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