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Performance of a stratified sand filter in removal of chemical oxygen demand, total suspended solids and ammonia nitrogen from high-strength wastewaters.

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dc.contributor.author Rodgers, M.
dc.contributor.author Mulqueen, J.
dc.contributor.author Healy, Mark G.
dc.contributor.author Rodgers, Michael
dc.date.accessioned 2012-02-13T14:07:05Z
dc.date.available 2012-02-13T14:07:05Z
dc.date.issued 2007-06-01
dc.identifier.citation Healy, M.G., Rodgers, M., Mulqueen, J. 2007. Performance of a stratified sand filter in removal of chemical oxygen demand, total suspended solids and ammonia nitrogen from high-strength wastewaters. Journal of Environmental Management 83: 409-415. en_US
dc.identifier.uri http://hdl.handle.net/10379/2566
dc.description.abstract A stratified sand filter column, operated in recirculation mode and treating synthetic effluent resembling high strength dairy wastewaters was studied over a 342 day duration. The aim of this paper was to examine the organic, total suspended solids (TSS) and nutrient removal rates of the sand filter, operated in recirculation mode, under incrementally increasing hydraulic and organic loading rates and to propose a field filter sizing criterion. Best performance was obtained at a system hydraulic loading rate of 10 L m-2 d-1; a higher system hydraulic loading rate (of 13.4 L m-2 d-1) caused surface ponding. The system hydraulic loading rate of 10 L m-2 d-1 gave a filter chemical oxygen demand (COD), TSS, and TKN loading rate of 14, 3.7, and 2.1 g m-2 d-1, respectively, and produced consistent COD and TSS removals of greater than 99%, and an effluent NO3-N concentration of 42 mg L-1 (accounting for an 86% reduction in total nitrogen (Tot-N)). As the proportional surface area requirement for the sand filter described in this study is less than the recommended surface area requirement of a free-water surface (FWS) wetland treating an effluent of similar quality, it could provide an economic and sustainable alternative to conventional wetland treatment. en_US
dc.format application/pdf en_US
dc.language.iso en en_US
dc.publisher Journal of Environmental Management en_US
dc.subject Civil Engineering en_US
dc.subject Recirculating sand filters en_US
dc.subject Dairy soiled water en_US
dc.subject Organic loading rate en_US
dc.subject Agricultural wastewater en_US
dc.subject.lcsh Recirculating sand filters en_US
dc.subject.lcsh Agricultural wastewater en_US
dc.subject.lcsh Dairy soiled water treatment en_US
dc.title Performance of a stratified sand filter in removal of chemical oxygen demand, total suspended solids and ammonia nitrogen from high-strength wastewaters. en_US
dc.type Article en_US
dc.identifier.doi 10.1016/j.jenvman.2006.03.005
dc.local.publishedsource http://10.1016/j.jenvman.2006.03.005 en_US
dc.description.peer-reviewed peer-reviewed en_US
dc.contributor.funder Teagasc en_US

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