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Quantification of biofilm build-up in filters when intermittently loaded with low-strength synthetic wastewater

ARAN - Access to Research at NUI Galway

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dc.contributor.author Healy, Mark G.
dc.contributor.author Rodgers, Michael
dc.date.accessioned 2012-07-16T15:23:05Z
dc.date.available 2012-07-16T15:23:05Z
dc.date.issued 2011
dc.identifier.citation Healy, M.G., Rodgers, M., Burke, P. (2011) 'Quantification of biofilm build-up in filters when intermittently loaded with low-strength synthetic wastewater'. Desalination, 271 (1-3):105-110. en_US
dc.identifier.issn 0011-9164
dc.identifier.uri http://hdl.handle.net/10379/2908
dc.description Journal article en_US
dc.description.abstract Accumulation of particulate matter and microorganisms present in wastewater as biofilm on the surface of filters can lead to clogging of the media. If clogging of filters occurs, they need to be temporarily decommissioned before they can be operated again. The mechanisms causing clogging may only be delineated through destructive sampling of a filter. The aim of this study was to characterise the build-up of biofilm in the upper layer below the surface of polishing filters intermittently loaded with effluent from a novel horizontal flow biofilm reactor used for the treatment of domestic-strength wastewater. Three filter media were used: crushed glass, sand, and a shallow podzolized soil. The parameters used to measure biofilm build-up were: soil water retention, total phosphorus (Tot-P) content and loss on ignition (LOI). The LOI and Tot-P deposition near the filter surface were lowest in the glass filters. Soil water retention curves indicated that biofilm formation mainly occurred in the uppermost 0.03 m depth below the filter surface and gradually decreased with depth. This indicates that measurements of volumetric water content using time domain reflectrometry probes may be used as an in situ proxy for measurements that would normally require the destructive sampling of a filter. en_US
dc.format application/pdf en_US
dc.language.iso en en_US
dc.relation.ispartof Desalination en
dc.subject Horizontal flow biofilm reactor en_US
dc.subject Filtration en_US
dc.subject Scanning electron microscopy en_US
dc.subject Surface clogging en_US
dc.subject Biofilm en_US
dc.subject Soil water characteristic curve en_US
dc.title Quantification of biofilm build-up in filters when intermittently loaded with low-strength synthetic wastewater en_US
dc.type Article en_US
dc.date.updated 2012-07-16T08:53:37Z
dc.identifier.doi 10.1016/j.desal.2010.12.024
dc.local.publishedsource http://dx.doi.org/10.1016/j.desal.2010.12.024 en_US
dc.description.peer-reviewed peer-reviewed
dc.contributor.funder |~|Other|~|
dc.internal.rssid 1480168
dc.local.contact Mark Healy, Dept. Of Civil Engineering, Room E210, Civil Engineering Building, Nui Galway. 5364 Email: mark.healy@nuigalway.ie
dc.local.copyrightchecked Yes
dc.local.version ACCEPTED

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