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EDTA in dairy wastewater and removal efficiency - A case study

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dc.contributor.author Xie, Congmin Zoe
dc.contributor.author Healy, Terry R.
dc.contributor.author Robinson, Peter
dc.contributor.author Stewart, Kevin
dc.date.accessioned 2012-10-11T22:22:09Z
dc.date.available 2012-10-11T22:22:09Z
dc.date.copyright 2012
dc.date.issued 2012
dc.identifier.citation Xie, C. Z., Healy, T.R., Robinson, P., & Stewart, K. (2012). EDTA in dairy wastewater and removal efficiency - A case study. International Journal of Environment and Sustainable Development, 11(2), 206-212. en_NZ
dc.identifier.issn 1474-6778
dc.identifier.uri http://hdl.handle.net/10289/6717
dc.description.abstract EDTA is the most widely used chelating agent for removal of undesirable cations in many industrial applications such as the dairy industry. It is generally considered to be non-biodegradable by conventional wastewater treatment, thereby potentially producing an environmental health risk. Under suitable conditions, however, EDTA has been reported to be effectively degraded by micro organisms during wastewater treatment. This study examined degradation of EDTA from a dairy wastewater treatment process in New Zealand operated at pH 8.0-8.2, with a three-week sludge retention time. An HPLC-UV analytical method was used to measure EDTA. A wide range of EDTA concentrations (93 to 5194 μg/L) was measured in the influent entering the wastewater treatment plant, while concentrations of 72-260 μg/L were measured in dairy effluent discharged into the local stream. About 93% of EDTA was degraded by the wastewater treatment. This study demonstrates that the wastewater treatment process at a dairy plant in New Zealand was very effective in removing EDTA. en_NZ
dc.language.iso en
dc.publisher Inderscience en_NZ
dc.relation.ispartof International Journal of Environment and Sustainable Development
dc.subject EDTA cleaning en_NZ
dc.subject EDTA dairy factories en_NZ
dc.subject EDTA degradation en_NZ
dc.subject EDTA measurement en_NZ
dc.subject EDTA waste en_NZ
dc.subject Environmental EDTA en_NZ
dc.title EDTA in dairy wastewater and removal efficiency - A case study en_NZ
dc.type Journal Article en_NZ
dc.identifier.doi 10.1504/IJESD.2012.049189 en_NZ


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