Dynamics of dewaterability and bacterial populations in activated sludge
Relationships of bacterial populations and extracellular polymer substances (EPS) to dewaterability of activated sludge were studied on three laboratory-scale activated sludge reactors fed with synthetic wastewater. Dewaterability of activated sludge was evaluated by a novel method developed by the...
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| Veröffentlicht in: | Water science and technology 2012-01, Vol.66 (8), p.1634-1640 |
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| creator | Li, Ning Satoh, Hiroyasu Mino, Takashi |
| description | Relationships of bacterial populations and extracellular polymer substances (EPS) to dewaterability of activated sludge were studied on three laboratory-scale activated sludge reactors fed with synthetic wastewater. Dewaterability of activated sludge was evaluated by a novel method developed by the authors, in which small amount of sludge was centrifugally dewatered, and its water content was measured. Bacterial populations during the reactor operation were analyzed by the polymerase chain reaction/terminal-restriction fragment length polymorphism (PCR/T-RFLP) targeted at a partial 16S rRNA gene. Extracellular polymeric substances (EPS) were extracted using cation exchange resin (CER), and polysaccharides and total protein in EPS were determined. Some of the dominant terminal-restriction fragments (T-RFs) were observed to have significant relationships with dewaterability of sludge, and it was suggested that bacterial species corresponding to those peaks significantly affected dewaterability. On the other hand, significant relationships were not found between EPS concentration and dewaterability of sludge. |
| doi_str_mv | 10.2166/wst.2012.360 |
| format | Article |
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Dewaterability of activated sludge was evaluated by a novel method developed by the authors, in which small amount of sludge was centrifugally dewatered, and its water content was measured. Bacterial populations during the reactor operation were analyzed by the polymerase chain reaction/terminal-restriction fragment length polymorphism (PCR/T-RFLP) targeted at a partial 16S rRNA gene. Extracellular polymeric substances (EPS) were extracted using cation exchange resin (CER), and polysaccharides and total protein in EPS were determined. Some of the dominant terminal-restriction fragments (T-RFs) were observed to have significant relationships with dewaterability of sludge, and it was suggested that bacterial species corresponding to those peaks significantly affected dewaterability. On the other hand, significant relationships were not found between EPS concentration and dewaterability of sludge.</description><identifier>ISSN: 0273-1223</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2012.360</identifier><identifier>PMID: 22907445</identifier><language>eng</language><publisher>England: IWA Publishing</publisher><subject>Activated sludge ; Bacteria ; Bacteria - classification ; Bacteria - genetics ; Bioreactors ; Bioreactors - microbiology ; Cation exchange ; Cation exchanging ; Cationic polymerization ; Cations ; DNA ; Dynamics ; Extracellular ; Fragments ; Gene polymorphism ; Moisture content ; Nucleotide sequence ; PCR ; Polymerase Chain Reaction ; Polymers ; Polymorphism ; Polysaccharides ; Populations ; Proteins ; Reactors ; Restriction fragment length polymorphism ; RNA, Ribosomal, 16S - genetics ; rRNA 16S ; Saccharides ; Sewage - microbiology ; Sludge ; Waste Disposal, Fluid - methods ; Wastewater ; Water content ; Water treatment plants</subject><ispartof>Water science and technology, 2012-01, Vol.66 (8), p.1634-1640</ispartof><rights>Copyright IWA Publishing Aug 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-b3105f70c18cf73f7870705954b435a70418136dea97bab24f28a0677a64cd683</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22907445$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Ning</creatorcontrib><creatorcontrib>Satoh, Hiroyasu</creatorcontrib><creatorcontrib>Mino, Takashi</creatorcontrib><title>Dynamics of dewaterability and bacterial populations in activated sludge</title><title>Water science and technology</title><addtitle>Water Sci Technol</addtitle><description>Relationships of bacterial populations and extracellular polymer substances (EPS) to dewaterability of activated sludge were studied on three laboratory-scale activated sludge reactors fed with synthetic wastewater. Dewaterability of activated sludge was evaluated by a novel method developed by the authors, in which small amount of sludge was centrifugally dewatered, and its water content was measured. Bacterial populations during the reactor operation were analyzed by the polymerase chain reaction/terminal-restriction fragment length polymorphism (PCR/T-RFLP) targeted at a partial 16S rRNA gene. Extracellular polymeric substances (EPS) were extracted using cation exchange resin (CER), and polysaccharides and total protein in EPS were determined. Some of the dominant terminal-restriction fragments (T-RFs) were observed to have significant relationships with dewaterability of sludge, and it was suggested that bacterial species corresponding to those peaks significantly affected dewaterability. On the other hand, significant relationships were not found between EPS concentration and dewaterability of sludge.</description><subject>Activated sludge</subject><subject>Bacteria</subject><subject>Bacteria - classification</subject><subject>Bacteria - genetics</subject><subject>Bioreactors</subject><subject>Bioreactors - microbiology</subject><subject>Cation exchange</subject><subject>Cation exchanging</subject><subject>Cationic polymerization</subject><subject>Cations</subject><subject>DNA</subject><subject>Dynamics</subject><subject>Extracellular</subject><subject>Fragments</subject><subject>Gene polymorphism</subject><subject>Moisture content</subject><subject>Nucleotide sequence</subject><subject>PCR</subject><subject>Polymerase Chain Reaction</subject><subject>Polymers</subject><subject>Polymorphism</subject><subject>Polysaccharides</subject><subject>Populations</subject><subject>Proteins</subject><subject>Reactors</subject><subject>Restriction fragment length polymorphism</subject><subject>RNA, Ribosomal, 16S - genetics</subject><subject>rRNA 16S</subject><subject>Saccharides</subject><subject>Sewage - microbiology</subject><subject>Sludge</subject><subject>Waste Disposal, Fluid - methods</subject><subject>Wastewater</subject><subject>Water content</subject><subject>Water treatment plants</subject><issn>0273-1223</issn><issn>1996-9732</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqFkUtLAzEURoMotlZ3riXgxoVTbx6TTJZSHxUKbnQdMpmMpMzLyYyl_97Uqgs3chcXLocPvnsQOicwp0SIm00Y5hQInTMBB2hKlBKJkoweoilQyRJCKZugkxDWACAZh2M0oVSB5DydouXdtjG1twG3JS7cxgyuN7mv_LDFpilwbmy8eFPhru3Gygy-bQL2DY53_xHpAodqLN7cKToqTRXc2feeodeH-5fFMlk9Pz4tbleJ5SQbkpwRSEsJlmS2lKyUmQQJqUp5zllqJESKMFE4o2RucspLmhkQUhrBbSEyNkNX-9yub99HFwZd-2BdVZnGtWPQhMeKJKWM_o8C40IAfKVe_kHX7dg3sYgmijMpVZxIXe8p27ch9K7UXe9r029jlN7J0FGG3snQUUbEL75Dx7x2xS_88332CSk3gww</recordid><startdate>20120101</startdate><enddate>20120101</enddate><creator>Li, Ning</creator><creator>Satoh, Hiroyasu</creator><creator>Mino, Takashi</creator><general>IWA Publishing</general><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>3V.</scope><scope>7QH</scope><scope>7UA</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8FE</scope><scope>8FG</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>H96</scope><scope>H97</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>L.G</scope><scope>L6V</scope><scope>M0S</scope><scope>M1P</scope><scope>M7S</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>7X8</scope><scope>7QL</scope><scope>7ST</scope><scope>7T7</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20120101</creationdate><title>Dynamics of dewaterability and bacterial populations in activated sludge</title><author>Li, Ning ; Satoh, Hiroyasu ; Mino, Takashi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-b3105f70c18cf73f7870705954b435a70418136dea97bab24f28a0677a64cd683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Activated sludge</topic><topic>Bacteria</topic><topic>Bacteria - 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Dewaterability of activated sludge was evaluated by a novel method developed by the authors, in which small amount of sludge was centrifugally dewatered, and its water content was measured. Bacterial populations during the reactor operation were analyzed by the polymerase chain reaction/terminal-restriction fragment length polymorphism (PCR/T-RFLP) targeted at a partial 16S rRNA gene. Extracellular polymeric substances (EPS) were extracted using cation exchange resin (CER), and polysaccharides and total protein in EPS were determined. Some of the dominant terminal-restriction fragments (T-RFs) were observed to have significant relationships with dewaterability of sludge, and it was suggested that bacterial species corresponding to those peaks significantly affected dewaterability. On the other hand, significant relationships were not found between EPS concentration and dewaterability of sludge.</abstract><cop>England</cop><pub>IWA Publishing</pub><pmid>22907445</pmid><doi>10.2166/wst.2012.360</doi><tpages>7</tpages></addata></record> |
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| identifier | ISSN: 0273-1223 |
| ispartof | Water science and technology, 2012-01, Vol.66 (8), p.1634-1640 |
| issn | 0273-1223 1996-9732 |
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| source | MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | Activated sludge Bacteria Bacteria - classification Bacteria - genetics Bioreactors Bioreactors - microbiology Cation exchange Cation exchanging Cationic polymerization Cations DNA Dynamics Extracellular Fragments Gene polymorphism Moisture content Nucleotide sequence PCR Polymerase Chain Reaction Polymers Polymorphism Polysaccharides Populations Proteins Reactors Restriction fragment length polymorphism RNA, Ribosomal, 16S - genetics rRNA 16S Saccharides Sewage - microbiology Sludge Waste Disposal, Fluid - methods Wastewater Water content Water treatment plants |
| title | Dynamics of dewaterability and bacterial populations in activated sludge |
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