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dc.contributor.authorFox, S.
dc.contributor.authorClifford, Eoghan
dc.date.accessioned2019-09-03T11:39:01Z
dc.date.available2019-09-03T11:39:01Z
dc.date.issued2018-06-12
dc.identifier.citationFox, S., & Clifford, E. (2018). Detecting the End of Nitrification in Small and Decentralized Wastewater Treatment Systems Using Low-Resource Real-Time Control Methods. Journal of Environmental Engineering, 144(8), 04018069. doi: 10.1061/(ASCE)EE.1943-7870.0001404en_IE
dc.identifier.issn0733-9372
dc.identifier.issn1943-7870
dc.identifier.urihttp://hdl.handle.net/10379/15374
dc.description.abstractThere is increasing demand on operators of small-scale wastewater treatment plants (WWTPs) to improve biological nutrient removal and energy efficiency while being subject to unique challenges, including reduced resources. Automated monitoring and control strategies of WWTPs can provide the necessary tools to improve plant performance and energy efficiency. However, online sensors for key parameters such as ammonium can require excessive maintenance, are unreliable unless frequently maintained, and often are not affordable. In addition, control techniques such as machine learning may not be financially or technically compatible within the constraints of small-scale WWTPs. This study analyzes the use of low-cost, reliable surrogate sensors in association with inexpensive and robust programmable logistic controllers to improve WWTP performance and energy efficiency through automation. The paper presents three novel methodologies for control of batch WWTPs using pH and oxidation reduction potential (ORP) trends. Applying and optimizing these methodologies enabled an average reduction in cycle time and energy consumption of 60 and 43%, respectively, when compared to the fixed-time treatment cycle and an average effluent ammonium concentration of 1.9mg/L. The automated system proposed has significant potential to enhance the performance of small-scale WWTPs in terms of environmental compliance and energy consumption.en_IE
dc.description.sponsorshipThe authors wish to acknowledge the support received from the Irish Research Council, Molloy Environmental Systems (EPSPG/2011/53) and Enterprise Ireland (IP/2010/0084).en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherAmerican Society of Civil Engineersen_IE
dc.relation.ispartofJournal Of Environmental Engineering-Asceen
dc.subjectSEQUENCING BATCH-REACTORen_IE
dc.subjectBIOLOGICAL NITROGEN REMOVALen_IE
dc.subjectNUTRIENT REMOVALen_IE
dc.subjectCONTROL STRATEGYen_IE
dc.subjectNEURAL-NETWORKSen_IE
dc.subjectORPen_IE
dc.subjectPHen_IE
dc.subjectAERATIONen_IE
dc.subjectREDUCTIONen_IE
dc.subjectPROFILESen_IE
dc.titleDetecting the end of nitrification in small and decentralized wastewater treatment systems using low-resource real-time control methodsen_IE
dc.typeArticleen_IE
dc.date.updated2019-08-13T16:24:59Z
dc.identifier.doi10.1061/(ASCE)EE.1943-7870.0001404
dc.local.publishedsourcehttps://doi.org/10.1061/(ASCE)EE.1943-7870.0001404en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funderIrish Research Councilen_IE
dc.contributor.funderEnterprise Irelanden_IE
dc.internal.rssid17247694
dc.local.contactEoghan Clifford, Room 1035, Alice Perry Engineering Building, Nui Galway, Galway. 2219 Email: eoghan.clifford@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
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