Feed-forward dose control of wastewater chlorination using on-line pH and ORP titration
In this study, a simple automatic pH–ORP titration device was developed for identifying the various ammonia concentrations and chlorine dose requirements for wastewater chlorination by identifying the peaks in the ORP-slope profiles and knees/valleys in the pH profiles. In addition, breakpoint chlor...
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| Veröffentlicht in: | Chemosphere (Oxford) 2004-09, Vol.56 (10), p.973-980 |
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| creator | Yu, Ruey-Fang |
| description | In this study, a simple automatic pH–ORP titration device was developed for identifying the various ammonia concentrations and chlorine dose requirements for wastewater chlorination by identifying the peaks in the ORP-slope profiles and knees/valleys in the pH profiles. In addition, breakpoint chlorination experiments have shown that the ORP values at the monochloramine humps and breakpoints are linearly correlated with the ammonia concentrations. Therefore, a feed-forward control strategy, based on the chlorine/ammonia weight ratio (Cl/N), is proposed in this paper, to control the chlorine doses for a continuous wastewater chlorination experiment in a laboratory-scale reactor. The result of this continuous wastewater chlorination experiment has shown that the pH–ORP titration was able to precisely determine the variations of ammonia concentrations in the chlorination influent. Under this control strategy, effective and stable disinfection efficiencies in terms of total coliform count were obtained. |
| doi_str_mv | 10.1016/j.chemosphere.2004.03.015 |
| format | Article |
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In addition, breakpoint chlorination experiments have shown that the ORP values at the monochloramine humps and breakpoints are linearly correlated with the ammonia concentrations. Therefore, a feed-forward control strategy, based on the chlorine/ammonia weight ratio (Cl/N), is proposed in this paper, to control the chlorine doses for a continuous wastewater chlorination experiment in a laboratory-scale reactor. The result of this continuous wastewater chlorination experiment has shown that the pH–ORP titration was able to precisely determine the variations of ammonia concentrations in the chlorination influent. Under this control strategy, effective and stable disinfection efficiencies in terms of total coliform count were obtained.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2004.03.015</identifier><identifier>PMID: 15268964</identifier><identifier>CODEN: CMSHAF</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Ammonia - chemistry ; Applied sciences ; Chlorine - chemistry ; Chlorine dose control ; Enterobacteriaceae - metabolism ; Exact sciences and technology ; Feed-forward control ; Hydrogen-Ion Concentration ; ORP ; Other wastewaters ; Oxidation-Reduction ; Pollution ; Taiwan ; Titration ; Titrimetry - methods ; Waste Disposal, Fluid - methods ; Wastewater chlorination ; Wastewaters ; Water Purification - instrumentation ; Water Purification - methods ; Water treatment and pollution</subject><ispartof>Chemosphere (Oxford), 2004-09, Vol.56 (10), p.973-980</ispartof><rights>2004 Elsevier Ltd</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c496t-aba89f44fbd12b1ddc27c3480b31c29b9163a01e44d330175888a63b3170a1653</citedby><cites>FETCH-LOGICAL-c496t-aba89f44fbd12b1ddc27c3480b31c29b9163a01e44d330175888a63b3170a1653</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.chemosphere.2004.03.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15984399$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15268964$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yu, Ruey-Fang</creatorcontrib><title>Feed-forward dose control of wastewater chlorination using on-line pH and ORP titration</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>In this study, a simple automatic pH–ORP titration device was developed for identifying the various ammonia concentrations and chlorine dose requirements for wastewater chlorination by identifying the peaks in the ORP-slope profiles and knees/valleys in the pH profiles. In addition, breakpoint chlorination experiments have shown that the ORP values at the monochloramine humps and breakpoints are linearly correlated with the ammonia concentrations. Therefore, a feed-forward control strategy, based on the chlorine/ammonia weight ratio (Cl/N), is proposed in this paper, to control the chlorine doses for a continuous wastewater chlorination experiment in a laboratory-scale reactor. The result of this continuous wastewater chlorination experiment has shown that the pH–ORP titration was able to precisely determine the variations of ammonia concentrations in the chlorination influent. Under this control strategy, effective and stable disinfection efficiencies in terms of total coliform count were obtained.</description><subject>Ammonia - chemistry</subject><subject>Applied sciences</subject><subject>Chlorine - chemistry</subject><subject>Chlorine dose control</subject><subject>Enterobacteriaceae - metabolism</subject><subject>Exact sciences and technology</subject><subject>Feed-forward control</subject><subject>Hydrogen-Ion Concentration</subject><subject>ORP</subject><subject>Other wastewaters</subject><subject>Oxidation-Reduction</subject><subject>Pollution</subject><subject>Taiwan</subject><subject>Titration</subject><subject>Titrimetry - methods</subject><subject>Waste Disposal, Fluid - methods</subject><subject>Wastewater chlorination</subject><subject>Wastewaters</subject><subject>Water Purification - instrumentation</subject><subject>Water Purification - methods</subject><subject>Water treatment and pollution</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqN0ctuEzEUBmALgWgovAIyC9jN4PvYSxRRilSpCIFYWh77DHE0sYM9acTb45JIdEdXXpzv9-1H6A0lPSVUvd_2fgO7XPcbKNAzQkRPeE-ofIJWVA-mo8zop2jVBrJTkssL9KLWLSEtLM1zdEElU9oosUI_rgBCN-VydCXgkCtgn9NS8ozzhI-uLnB0CxTsN3MuMbkl5oQPNaafOKdujgnw_hq7FPDt1y94iUv5S16iZ5ObK7w6r5fo-9XHb-vr7ub20-f1h5vOC6OWzo1Om0mIaQyUjTQEzwbPhSYjp56Z0VDFHaEgROCc0EFqrZ3ibToQ1x7DL9G70777kn8doC52F6uHeXYJ8qFaZpQkXNNHQMYlY_y_kCo6KKlIg-YEfcm1FpjsvsSdK78tJfa-J7u1D3qy9z1Zwm3rqWVfnw85jDsI_5LnYhp4ewauejdPxSUf6wNntODGNLc-OWiffBeh2OojJA8hFvCLDTk-4jp_ADQPtkE</recordid><startdate>20040901</startdate><enddate>20040901</enddate><creator>Yu, Ruey-Fang</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7TV</scope><scope>7UA</scope><scope>C1K</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20040901</creationdate><title>Feed-forward dose control of wastewater chlorination using on-line pH and ORP titration</title><author>Yu, Ruey-Fang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c496t-aba89f44fbd12b1ddc27c3480b31c29b9163a01e44d330175888a63b3170a1653</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Ammonia - chemistry</topic><topic>Applied sciences</topic><topic>Chlorine - chemistry</topic><topic>Chlorine dose control</topic><topic>Enterobacteriaceae - metabolism</topic><topic>Exact sciences and technology</topic><topic>Feed-forward control</topic><topic>Hydrogen-Ion Concentration</topic><topic>ORP</topic><topic>Other wastewaters</topic><topic>Oxidation-Reduction</topic><topic>Pollution</topic><topic>Taiwan</topic><topic>Titration</topic><topic>Titrimetry - methods</topic><topic>Waste Disposal, Fluid - methods</topic><topic>Wastewater chlorination</topic><topic>Wastewaters</topic><topic>Water Purification - instrumentation</topic><topic>Water Purification - methods</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yu, Ruey-Fang</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yu, Ruey-Fang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Feed-forward dose control of wastewater chlorination using on-line pH and ORP titration</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2004-09-01</date><risdate>2004</risdate><volume>56</volume><issue>10</issue><spage>973</spage><epage>980</epage><pages>973-980</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><coden>CMSHAF</coden><abstract>In this study, a simple automatic pH–ORP titration device was developed for identifying the various ammonia concentrations and chlorine dose requirements for wastewater chlorination by identifying the peaks in the ORP-slope profiles and knees/valleys in the pH profiles. In addition, breakpoint chlorination experiments have shown that the ORP values at the monochloramine humps and breakpoints are linearly correlated with the ammonia concentrations. Therefore, a feed-forward control strategy, based on the chlorine/ammonia weight ratio (Cl/N), is proposed in this paper, to control the chlorine doses for a continuous wastewater chlorination experiment in a laboratory-scale reactor. The result of this continuous wastewater chlorination experiment has shown that the pH–ORP titration was able to precisely determine the variations of ammonia concentrations in the chlorination influent. Under this control strategy, effective and stable disinfection efficiencies in terms of total coliform count were obtained.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>15268964</pmid><doi>10.1016/j.chemosphere.2004.03.015</doi><tpages>8</tpages></addata></record> |
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| ispartof | Chemosphere (Oxford), 2004-09, Vol.56 (10), p.973-980 |
| issn | 0045-6535 1879-1298 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Ammonia - chemistry Applied sciences Chlorine - chemistry Chlorine dose control Enterobacteriaceae - metabolism Exact sciences and technology Feed-forward control Hydrogen-Ion Concentration ORP Other wastewaters Oxidation-Reduction Pollution Taiwan Titration Titrimetry - methods Waste Disposal, Fluid - methods Wastewater chlorination Wastewaters Water Purification - instrumentation Water Purification - methods Water treatment and pollution |
| title | Feed-forward dose control of wastewater chlorination using on-line pH and ORP titration |
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