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dc.contributor.authorFitzhenry, Kelly
dc.contributor.authorRowan, Neil
dc.contributor.authorFinnegan, William
dc.contributor.authorZhan, Xinmin
dc.contributor.authorClifford, Eoghan
dc.identifier.citationFitzhenry, Kelly, Rowan, Neil, Finnegan, William, Zhan, Xinmin, & Clifford, Eoghan. (2018). Microbiological characterisation and impact of suspended solids on pathogen removal from wastewaters in dairy processing factories. Journal of Dairy Research, 85(3), 391-395. doi: 10.1017/S0022029918000602en_IE
dc.description.abstractIn this Research Communication we investigate the microbiological profile of 12 dairy wastewater streams from three contrasting Irish dairy processing factories to determine whether faecal indicators/pathogens were present and in turn, whether disinfection may be required for potential water reuse within the factory. Subsequently, the impact of suspended solids on the inactivation efficiency of Escherichia coli via two means of ultravoilet (UV) disinfection; flow-through pulsed UV (PUV) and continuous low pressure UV (LPUV) disinfection was analysed. Faecal indicators total coliforms and E. coli were detected in 10 out of the 12 samples collected at the dairy processing factories while pathogenic bacteria Listeria monocytogenes was detected in all samples collected at 2 out of the 3 factories. Salmonella spp. was undetected in all samples. The results also indicated that organic dairy wastewater solids had an impact on the performance efficiency of the PUV system and, to a lesser extent, the LPUV system. The findings indicate that the targeting of key pathogens would be required to enable wastewater reuse (and indeed effluent discharges if regulation continues to become more stringent) and that LPUV may offer a more robust disinfection method as it appears to be less susceptible to the presence of suspended solids.en_IE
dc.description.sponsorshipThe authors would like to acknowledge the Department of Agriculture, Food and the Marine for the funding of this research (Ref: 13-F-507). Additionally, the DairyWater research team would like to the members of the Irish dairy sector for their cooperation and contributions throughout the research projecten_IE
dc.publisherCambridge University Pressen_IE
dc.relation.ispartofJournal Of Dairy Researchen
dc.subjectDairy wastewateren_IE
dc.titleMicrobiological characterisation and impact of suspended solids on pathogen removal from wastewaters in dairy processing factoriesen_IE
dc.contributor.funderDepartment of Agriculture, Food and the Marineen_IE
dc.local.contactEoghan Clifford, Room 1035, Alice Perry Engineering Building, Nui Galway, Galway. 2219 Email:

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