Packed bed bioreactor for biofouling control of reverse osmosis and nanofiltration membranes

An installation and a method for removing dissolved biodegradable compounds as a biological treatment step upstream of an equipment to be protected from biofouling being part of a ground water, surface water or tertiary wastewater treatment line, wherein said upstream biological treatment step is ca...

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Bibliographic Details
Main Authors BROUWER, HARRY, WITTMANN, ERICH
Format Patent
LanguageEnglish
Published 04.06.2015
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:An installation and a method for removing dissolved biodegradable compounds as a biological treatment step upstream of an equipment to be protected from biofouling being part of a ground water, surface water or tertiary wastewater treatment line, wherein said upstream biological treatment step is carried out in at least one packed bed bioreactor comprising a vessel or a tank filled with packing elements, characterized in that: iv) said packing elements of said packed bed show a void fraction of at least 70% and the flow velocity of water through said packed bed bioreactor is at least 20 m/h, so that said packed bed does not have a removal efficiency of suspended solids in water, if any, of more than 30%; v) said packing elements of said packed bed show a specific surface area of at least 750 m2/m3; vi) said process does not require the use of any biocide or biostatic compound.
Bibliography:Application Number: AU20090352159