Use pH and ORP as fuzzy control parameters of denitrification in SBR process
In order to achieve fuzzy control of denitrification in a Sequencing Batch Reactor (SBR) brewery wastewater was used as the substrate. The effects of brewery wastewater, sodium acetate, methanol and andogenous carbon source on the relationships between pH, ORP and denitrification were investigated....
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| Veröffentlicht in: | Water science and technology 2002-01, Vol.46 (4-5), p.131-137 |
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| creator | PENG, Y. Z GAO, J. F WANG, S. Y SUI, M. H |
| description | In order to achieve fuzzy control of denitrification in a Sequencing Batch Reactor (SBR) brewery wastewater was used as the substrate. The effects of brewery wastewater, sodium acetate, methanol and andogenous carbon source on the relationships between pH, ORP and denitrification were investigated. Also different quantities of brewery wastewater were examined. All the results indicated that the nitrate apex and nitrate knee occurred in the pH and ORP profiles at the end of denitrification. And when carbon was the limiting factor, through comparing the different increasing rate of pH whether the carbon was enough or not could be known, and when the carbon should be added again could be decided. On the basis of this, the fuzzy controller for denitrification in SBR was constructed, and the on-line fuzzy control experiments comparing three methods of carbon addition were carried out. The results showed that continuous carbon addition at a low rate might be the best method, it could not only give higher denitrification rate but also reduce the re-aeration time as much as possible. It appears promising to use pH and ORP as fuzzy control parameters to control the denitrification time and the addition of carbon. |
| doi_str_mv | 10.2166/wst.2002.0569 |
| format | Article |
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Z ; GAO, J. F ; WANG, S. Y ; SUI, M. H</creator><creatorcontrib>PENG, Y. Z ; GAO, J. F ; WANG, S. Y ; SUI, M. H</creatorcontrib><description>In order to achieve fuzzy control of denitrification in a Sequencing Batch Reactor (SBR) brewery wastewater was used as the substrate. The effects of brewery wastewater, sodium acetate, methanol and andogenous carbon source on the relationships between pH, ORP and denitrification were investigated. Also different quantities of brewery wastewater were examined. All the results indicated that the nitrate apex and nitrate knee occurred in the pH and ORP profiles at the end of denitrification. And when carbon was the limiting factor, through comparing the different increasing rate of pH whether the carbon was enough or not could be known, and when the carbon should be added again could be decided. On the basis of this, the fuzzy controller for denitrification in SBR was constructed, and the on-line fuzzy control experiments comparing three methods of carbon addition were carried out. The results showed that continuous carbon addition at a low rate might be the best method, it could not only give higher denitrification rate but also reduce the re-aeration time as much as possible. It appears promising to use pH and ORP as fuzzy control parameters to control the denitrification time and the addition of carbon.</description><identifier>ISSN: 0273-1223</identifier><identifier>ISBN: 9781843394235</identifier><identifier>ISBN: 1843394235</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2002.0569</identifier><identifier>PMID: 12361001</identifier><identifier>CODEN: WSTED4</identifier><language>eng</language><publisher>London: IWA</publisher><subject>Acetates ; Acetic acid ; Aeration ; Applied sciences ; Automation ; Batch reactors ; Biological and medical sciences ; Biological treatment of waters ; Bioreactors ; Biotechnology ; Breweries ; Brewing industry wastewaters ; Carbon ; Carbon sources ; Control ; Control methods ; Denitrification ; Environment and pollution ; Exact sciences and technology ; Fundamental and applied biological sciences. Psychology ; Fuzzy control ; Fuzzy Logic ; Hydrogen-Ion Concentration ; Industrial applications and implications. Economical aspects ; Industrial wastewaters ; Knee ; Limiting factors ; Nitrogen - isolation & purification ; Parameters ; pH effects ; Pollution ; Profiles ; Sequencing batch reactor ; Sodium ; Sodium acetate ; Waste Disposal, Fluid - methods ; Wastewater ; Wastewaters ; Water treatment and pollution</subject><ispartof>Water science and technology, 2002-01, Vol.46 (4-5), p.131-137</ispartof><rights>2002 INIST-CNRS</rights><rights>Copyright IWA Publishing Aug 2002</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c473t-ab4eaa3571de745f20e64bfa0b3c49fe89cc761af6a1ea9aa01a6137684dc0563</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,776,780,785,786,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14182983$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12361001$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>PENG, Y. Z</creatorcontrib><creatorcontrib>GAO, J. F</creatorcontrib><creatorcontrib>WANG, S. Y</creatorcontrib><creatorcontrib>SUI, M. H</creatorcontrib><title>Use pH and ORP as fuzzy control parameters of denitrification in SBR process</title><title>Water science and technology</title><addtitle>Water Sci Technol</addtitle><description>In order to achieve fuzzy control of denitrification in a Sequencing Batch Reactor (SBR) brewery wastewater was used as the substrate. The effects of brewery wastewater, sodium acetate, methanol and andogenous carbon source on the relationships between pH, ORP and denitrification were investigated. Also different quantities of brewery wastewater were examined. All the results indicated that the nitrate apex and nitrate knee occurred in the pH and ORP profiles at the end of denitrification. And when carbon was the limiting factor, through comparing the different increasing rate of pH whether the carbon was enough or not could be known, and when the carbon should be added again could be decided. On the basis of this, the fuzzy controller for denitrification in SBR was constructed, and the on-line fuzzy control experiments comparing three methods of carbon addition were carried out. The results showed that continuous carbon addition at a low rate might be the best method, it could not only give higher denitrification rate but also reduce the re-aeration time as much as possible. It appears promising to use pH and ORP as fuzzy control parameters to control the denitrification time and the addition of carbon.</description><subject>Acetates</subject><subject>Acetic acid</subject><subject>Aeration</subject><subject>Applied sciences</subject><subject>Automation</subject><subject>Batch reactors</subject><subject>Biological and medical sciences</subject><subject>Biological treatment of waters</subject><subject>Bioreactors</subject><subject>Biotechnology</subject><subject>Breweries</subject><subject>Brewing industry wastewaters</subject><subject>Carbon</subject><subject>Carbon sources</subject><subject>Control</subject><subject>Control methods</subject><subject>Denitrification</subject><subject>Environment and pollution</subject><subject>Exact sciences and technology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Fuzzy control</subject><subject>Fuzzy Logic</subject><subject>Hydrogen-Ion Concentration</subject><subject>Industrial applications and implications. Economical aspects</subject><subject>Industrial wastewaters</subject><subject>Knee</subject><subject>Limiting factors</subject><subject>Nitrogen - isolation & purification</subject><subject>Parameters</subject><subject>pH effects</subject><subject>Pollution</subject><subject>Profiles</subject><subject>Sequencing batch reactor</subject><subject>Sodium</subject><subject>Sodium acetate</subject><subject>Waste Disposal, Fluid - methods</subject><subject>Wastewater</subject><subject>Wastewaters</subject><subject>Water treatment and pollution</subject><issn>0273-1223</issn><issn>1996-9732</issn><isbn>9781843394235</isbn><isbn>1843394235</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNqN0s9LHDEUB_BQLbpuPfYqAal4mW1eXiaZHKu0Wliw2Hoe3mYSGJmdWZMZiv71zdYFoQftKZcP70fel7GPIBYStP78O40LKYRciFLbd2wG1urCGpR77NiaCiqFaJXEcp_NhDRYgJR4yI5SuhdCGFTigB2CRA1CwIwt75Lnm2tOfcNvbn9wSjxMT0-P3A39GIeObyjS2o8-Jj4E3vi-HWMbWkdjO_S87fnPi1u-iYPzKX1g7wN1yR_v3jm7-_b11-V1sby5-n75ZVk4ZXAsaKU8EZYGGm9UGaTwWq0CiRU6ZYOvrHNGAwVN4MkSCSANaHSlGpfXxjk7e66b-z5MPo31uk3Odx31fphSbSTkRhbfhNJagWjMf0BdojLwJoQ8qC1tleH561BIpUul83Xm7PQfej9Msc8_WINVqKSSfzsXz8rFIaXoQ72J7ZriYy5Vb6NR52jU22jU22hkf7KrOq3WvnnRu9tn8GkHKDnqQqTetenFKahkXgT_ALqbvCU</recordid><startdate>20020101</startdate><enddate>20020101</enddate><creator>PENG, Y. 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Z</au><au>GAO, J. F</au><au>WANG, S. Y</au><au>SUI, M. H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Use pH and ORP as fuzzy control parameters of denitrification in SBR process</atitle><jtitle>Water science and technology</jtitle><addtitle>Water Sci Technol</addtitle><date>2002-01-01</date><risdate>2002</risdate><volume>46</volume><issue>4-5</issue><spage>131</spage><epage>137</epage><pages>131-137</pages><issn>0273-1223</issn><eissn>1996-9732</eissn><isbn>9781843394235</isbn><isbn>1843394235</isbn><coden>WSTED4</coden><abstract>In order to achieve fuzzy control of denitrification in a Sequencing Batch Reactor (SBR) brewery wastewater was used as the substrate. The effects of brewery wastewater, sodium acetate, methanol and andogenous carbon source on the relationships between pH, ORP and denitrification were investigated. Also different quantities of brewery wastewater were examined. All the results indicated that the nitrate apex and nitrate knee occurred in the pH and ORP profiles at the end of denitrification. And when carbon was the limiting factor, through comparing the different increasing rate of pH whether the carbon was enough or not could be known, and when the carbon should be added again could be decided. On the basis of this, the fuzzy controller for denitrification in SBR was constructed, and the on-line fuzzy control experiments comparing three methods of carbon addition were carried out. The results showed that continuous carbon addition at a low rate might be the best method, it could not only give higher denitrification rate but also reduce the re-aeration time as much as possible. It appears promising to use pH and ORP as fuzzy control parameters to control the denitrification time and the addition of carbon.</abstract><cop>London</cop><pub>IWA</pub><pmid>12361001</pmid><doi>10.2166/wst.2002.0569</doi><tpages>7</tpages></addata></record> |
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| ispartof | Water science and technology, 2002-01, Vol.46 (4-5), p.131-137 |
| issn | 0273-1223 1996-9732 |
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| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Acetates Acetic acid Aeration Applied sciences Automation Batch reactors Biological and medical sciences Biological treatment of waters Bioreactors Biotechnology Breweries Brewing industry wastewaters Carbon Carbon sources Control Control methods Denitrification Environment and pollution Exact sciences and technology Fundamental and applied biological sciences. Psychology Fuzzy control Fuzzy Logic Hydrogen-Ion Concentration Industrial applications and implications. Economical aspects Industrial wastewaters Knee Limiting factors Nitrogen - isolation & purification Parameters pH effects Pollution Profiles Sequencing batch reactor Sodium Sodium acetate Waste Disposal, Fluid - methods Wastewater Wastewaters Water treatment and pollution |
| title | Use pH and ORP as fuzzy control parameters of denitrification in SBR process |
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