Prediction of the dewatering of selected inorganic sludges
There are a number of laboratory techniques traditionally used in the characterisation of sludges for the prediction of the efficient operation of dewatering processes such as centrifugation and filtration. In industry, capillary suction time and specific resistance to filtration measurements are co...
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| Veröffentlicht in: | Water science and technology 2001-01, Vol.44 (10), p.191-196 |
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| creator | HARBOUR, P. J AZIZ, A. A. A SCALES, P. J DIXON, D. R |
| description | There are a number of laboratory techniques traditionally used in the characterisation of sludges for the prediction of the efficient operation of dewatering processes such as centrifugation and filtration. In industry, capillary suction time and specific resistance to filtration measurements are common. Whilst useful in predicting trends, they do not assist in the design and optimisation of devices from first principles. Recent work in our laboratories has developed a technique for the fast measurement of the permeability and compressibility of sludge. This information, when coupled with first-principle models is useful for the prediction of the performance of solid-liquid separation devices. The work has shown that a single volume fraction dependent parameter, namely the solids diffusivity, calculated from permeability and compressibility, is able to fully characterise the dewaterability of sludge. This allows different sludges to be compared in an unequivocal fashion. Data will be presented for a range of sludges from different sources showing vastly different dewatering properties. The dewaterability of the different sludges is easily compared and the true role of flocculants in dewatering is highlighted. |
| doi_str_mv | 10.2166/wst.2001.0617 |
| format | Article |
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J ; AZIZ, A. A. A ; SCALES, P. J ; DIXON, D. R</creator><contributor>Lee, D</contributor><creatorcontrib>HARBOUR, P. J ; AZIZ, A. A. A ; SCALES, P. J ; DIXON, D. R ; Lee, D</creatorcontrib><description>There are a number of laboratory techniques traditionally used in the characterisation of sludges for the prediction of the efficient operation of dewatering processes such as centrifugation and filtration. In industry, capillary suction time and specific resistance to filtration measurements are common. Whilst useful in predicting trends, they do not assist in the design and optimisation of devices from first principles. Recent work in our laboratories has developed a technique for the fast measurement of the permeability and compressibility of sludge. This information, when coupled with first-principle models is useful for the prediction of the performance of solid-liquid separation devices. The work has shown that a single volume fraction dependent parameter, namely the solids diffusivity, calculated from permeability and compressibility, is able to fully characterise the dewaterability of sludge. This allows different sludges to be compared in an unequivocal fashion. Data will be presented for a range of sludges from different sources showing vastly different dewatering properties. The dewaterability of the different sludges is easily compared and the true role of flocculants in dewatering is highlighted.</description><identifier>ISSN: 0273-1223</identifier><identifier>ISBN: 9781843394044</identifier><identifier>ISBN: 1843394049</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.2001.0617</identifier><identifier>PMID: 11794653</identifier><identifier>CODEN: WSTED4</identifier><language>eng</language><publisher>London: IWA Publishing</publisher><subject>Applied sciences ; Centrifugation ; Compressibility ; Concentration (composition) ; Design optimization ; Devices ; Dewatering ; Electrical resistivity ; Exact sciences and technology ; Filtration ; Flocculation ; Laboratories ; Other industrial wastes. Sewage sludge ; Permeability ; Pollution ; Predictions ; Sewage - analysis ; Sewage - chemistry ; Sludge ; Suction ; Waste Disposal, Fluid - methods ; Wastes ; Water - chemistry</subject><ispartof>Water science and technology, 2001-01, Vol.44 (10), p.191-196</ispartof><rights>2002 INIST-CNRS</rights><rights>Copyright IWA Publishing Nov 2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c473t-eec7f32cbe9aa9949d8e63da6868cd4f612ac44c0805c7253054de93dfaaf6cb3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>310,311,315,781,785,790,791,27926,27927</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14052026$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11794653$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Lee, D</contributor><creatorcontrib>HARBOUR, P. J</creatorcontrib><creatorcontrib>AZIZ, A. A. A</creatorcontrib><creatorcontrib>SCALES, P. J</creatorcontrib><creatorcontrib>DIXON, D. R</creatorcontrib><title>Prediction of the dewatering of selected inorganic sludges</title><title>Water science and technology</title><addtitle>Water Sci Technol</addtitle><description>There are a number of laboratory techniques traditionally used in the characterisation of sludges for the prediction of the efficient operation of dewatering processes such as centrifugation and filtration. In industry, capillary suction time and specific resistance to filtration measurements are common. Whilst useful in predicting trends, they do not assist in the design and optimisation of devices from first principles. Recent work in our laboratories has developed a technique for the fast measurement of the permeability and compressibility of sludge. This information, when coupled with first-principle models is useful for the prediction of the performance of solid-liquid separation devices. The work has shown that a single volume fraction dependent parameter, namely the solids diffusivity, calculated from permeability and compressibility, is able to fully characterise the dewaterability of sludge. This allows different sludges to be compared in an unequivocal fashion. Data will be presented for a range of sludges from different sources showing vastly different dewatering properties. The dewaterability of the different sludges is easily compared and the true role of flocculants in dewatering is highlighted.</description><subject>Applied sciences</subject><subject>Centrifugation</subject><subject>Compressibility</subject><subject>Concentration (composition)</subject><subject>Design optimization</subject><subject>Devices</subject><subject>Dewatering</subject><subject>Electrical resistivity</subject><subject>Exact sciences and technology</subject><subject>Filtration</subject><subject>Flocculation</subject><subject>Laboratories</subject><subject>Other industrial wastes. Sewage sludge</subject><subject>Permeability</subject><subject>Pollution</subject><subject>Predictions</subject><subject>Sewage - analysis</subject><subject>Sewage - chemistry</subject><subject>Sludge</subject><subject>Suction</subject><subject>Waste Disposal, Fluid - methods</subject><subject>Wastes</subject><subject>Water - chemistry</subject><issn>0273-1223</issn><issn>1996-9732</issn><isbn>9781843394044</isbn><isbn>1843394049</isbn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqN0c9L3UAQB_DFVvRVPXotAVF6yXP2d8abiNqC0B70HPbtTp6RvMTuJkj_ezf4QPDQ9jQwfPgyzJexYw5LwY05f0njUgDwJRhud9iCI5oSrRSf2BHaildKSlSg1Ge2AGFlyYWQ--xLSk8AYKWCPbbPuUVltFywi1-RQuvHduiLoSnGRyoCvbiRYtuv502ijvxIoWj7Ia5d3_oidVNYUzpku43rEh1t5wF7uLm-v_pe3v28_XF1eVd6ZeVYEnnbSOFXhM4hKgwVGRmcqUzlg2oMF84r5aEC7a3QErQKhDI0zjXGr-QBO3vLfY7D74nSWG_a5KnrXE_DlGqB1qBF8x9QoTaa_xPySuRIPSd--zsEkd-oQOtMTz7Qp2GKfX5MzVFJgbrSkFX5pnwcUorU1M-x3bj4J0fVc7917ree-63nfrP_uk2dVhsK73pbYAanW-CSd10TXe_b9O7ybQKEka9zg6mR</recordid><startdate>20010101</startdate><enddate>20010101</enddate><creator>HARBOUR, P. 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Sewage sludge</topic><topic>Permeability</topic><topic>Pollution</topic><topic>Predictions</topic><topic>Sewage - analysis</topic><topic>Sewage - chemistry</topic><topic>Sludge</topic><topic>Suction</topic><topic>Waste Disposal, Fluid - methods</topic><topic>Wastes</topic><topic>Water - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HARBOUR, P. J</creatorcontrib><creatorcontrib>AZIZ, A. A. A</creatorcontrib><creatorcontrib>SCALES, P. J</creatorcontrib><creatorcontrib>DIXON, D. 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J</au><au>AZIZ, A. A. A</au><au>SCALES, P. J</au><au>DIXON, D. R</au><au>Lee, D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Prediction of the dewatering of selected inorganic sludges</atitle><jtitle>Water science and technology</jtitle><addtitle>Water Sci Technol</addtitle><date>2001-01-01</date><risdate>2001</risdate><volume>44</volume><issue>10</issue><spage>191</spage><epage>196</epage><pages>191-196</pages><issn>0273-1223</issn><eissn>1996-9732</eissn><isbn>9781843394044</isbn><isbn>1843394049</isbn><coden>WSTED4</coden><abstract>There are a number of laboratory techniques traditionally used in the characterisation of sludges for the prediction of the efficient operation of dewatering processes such as centrifugation and filtration. In industry, capillary suction time and specific resistance to filtration measurements are common. Whilst useful in predicting trends, they do not assist in the design and optimisation of devices from first principles. Recent work in our laboratories has developed a technique for the fast measurement of the permeability and compressibility of sludge. This information, when coupled with first-principle models is useful for the prediction of the performance of solid-liquid separation devices. The work has shown that a single volume fraction dependent parameter, namely the solids diffusivity, calculated from permeability and compressibility, is able to fully characterise the dewaterability of sludge. This allows different sludges to be compared in an unequivocal fashion. Data will be presented for a range of sludges from different sources showing vastly different dewatering properties. The dewaterability of the different sludges is easily compared and the true role of flocculants in dewatering is highlighted.</abstract><cop>London</cop><pub>IWA Publishing</pub><pmid>11794653</pmid><doi>10.2166/wst.2001.0617</doi><tpages>6</tpages></addata></record> |
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| ispartof | Water science and technology, 2001-01, Vol.44 (10), p.191-196 |
| issn | 0273-1223 1996-9732 |
| language | eng |
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| source | MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Applied sciences Centrifugation Compressibility Concentration (composition) Design optimization Devices Dewatering Electrical resistivity Exact sciences and technology Filtration Flocculation Laboratories Other industrial wastes. Sewage sludge Permeability Pollution Predictions Sewage - analysis Sewage - chemistry Sludge Suction Waste Disposal, Fluid - methods Wastes Water - chemistry |
| title | Prediction of the dewatering of selected inorganic sludges |
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