Effect of previous coagulation in direct ultrafiltration of primary settled municipal wastewater
Direct ultrafiltration of primary settled municipal wastewater can be a feasible option for water reuse in several applications by avoiding biological treatment. This paper discusses the effect of previous clarification by coagulation/sedimentation of raw wastewater on ultrafiltration performance an...
Gespeichert in:
| Veröffentlicht in: | Desalination 2012-10, Vol.304, p.41-48 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 48 |
|---|---|
| container_issue | |
| container_start_page | 41 |
| container_title | Desalination |
| container_volume | 304 |
| creator | Delgado Diaz, Sebastián Vera Peña, Luisa González Cabrera, Enrique Martínez Soto, Marta Vera Cabezas, Luisa M. Bravo Sánchez, Luis R. |
| description | Direct ultrafiltration of primary settled municipal wastewater can be a feasible option for water reuse in several applications by avoiding biological treatment. This paper discusses the effect of previous clarification by coagulation/sedimentation of raw wastewater on ultrafiltration performance and its relationship with the main operation parameters in dead-end mode (flux and backwashing duration). Reversible and residual membrane foulings in a hollow-fibre bench-scale unit were determined over a broad range of filtration parameters and coagulant doses used in the previous clarification of domestic wastewater. Moreover, results were also compared with those obtained by ultrafiltration of biologically treated effluent from a conventional WWTP. Reversible membrane fouling, which can be described by the cake formation model, seems mainly caused by the colloidal fraction of the wastewater. In fact, under optimal coagulant dosage, the cake resistance values (expressed by αω, in m−2) were similar to those obtained with the secondary effluent. Direct observation of the membrane surface suggests a solid accumulation in the vicinity of the membrane after backwashing, which could justify the increase in cake resistance during the initial filtration/backwashing cycles until steady-state conditions are reached. Residual fouling resistance decreased exponentially with the duration of backwashing, obtaining a limit resistance value which was independent of the coagulant dose. Moreover, high efficiency of chemical oxygen demand (COD) removal was achieved by the tested treatment train, regardless of the coagulant dose and the initial quality of the primary effluent.
► Direct ultrafiltration of municipal wastewater can be a feasible option for water reuse. ► Pre-clarification by coagulation permits a significant reduction in cake resistance. ► Cake was detached during backwashing, but only partially dispersed in the suspension. ► High efficiency of COD removal (81–95%) was achieved, regardless of the coagulant dose. |
| doi_str_mv | 10.1016/j.desal.2012.08.005 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1651406974</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0011916412004353</els_id><sourcerecordid>1651406974</sourcerecordid><originalsourceid>FETCH-LOGICAL-c505t-c13fcdd124ae380ba01f03881d29031f9b5b60c998183b8c53484dbfca1d01853</originalsourceid><addsrcrecordid>eNqFkU1v1DAQhiMEEkvhF3AgFyQuCTO247UPHFDVFqRKHGjPruOPyitvsthOK_493s2KI1xsWX7eGc_jpnmP0CMg_7zrrcs69gSQ9CB6gOFFs0GxpR1jnL1sNgCInUTOXjdvct7VI5GUbpqHK--dKe3s20NyT2Fecmtm_bhEXcI8tWFqbUhHYoklaR-O6-nmlAh7nX632ZUSnW33yxRMOOjYPutc3LMuLr1tXnkds3t33i-a--uru8tv3e2Pm--XX287M8BQOoPUG2uRMO2ogFEDeqBCoCUSKHo5DiMHI6VAQUdhBsoEs6M3Gi2gGOhF82mte0jzr8XlovYhGxejnlwdSiEfkAGXW_Z_tGIECOe8onRFTZpzTs6r88wVUkf1aqdO6tVRvQKhqvqa-nhuoLPR0Sc9mZD_RglnsCVbWrkPK-f1rPRjqsz9z1poAAAJkmAlvqyEq-qegksqm-Am49ZPUXYO_3zJH0mWpKE</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1069202666</pqid></control><display><type>article</type><title>Effect of previous coagulation in direct ultrafiltration of primary settled municipal wastewater</title><source>Elsevier ScienceDirect Journals</source><creator>Delgado Diaz, Sebastián ; Vera Peña, Luisa ; González Cabrera, Enrique ; Martínez Soto, Marta ; Vera Cabezas, Luisa M. ; Bravo Sánchez, Luis R.</creator><creatorcontrib>Delgado Diaz, Sebastián ; Vera Peña, Luisa ; González Cabrera, Enrique ; Martínez Soto, Marta ; Vera Cabezas, Luisa M. ; Bravo Sánchez, Luis R.</creatorcontrib><description>Direct ultrafiltration of primary settled municipal wastewater can be a feasible option for water reuse in several applications by avoiding biological treatment. This paper discusses the effect of previous clarification by coagulation/sedimentation of raw wastewater on ultrafiltration performance and its relationship with the main operation parameters in dead-end mode (flux and backwashing duration). Reversible and residual membrane foulings in a hollow-fibre bench-scale unit were determined over a broad range of filtration parameters and coagulant doses used in the previous clarification of domestic wastewater. Moreover, results were also compared with those obtained by ultrafiltration of biologically treated effluent from a conventional WWTP. Reversible membrane fouling, which can be described by the cake formation model, seems mainly caused by the colloidal fraction of the wastewater. In fact, under optimal coagulant dosage, the cake resistance values (expressed by αω, in m−2) were similar to those obtained with the secondary effluent. Direct observation of the membrane surface suggests a solid accumulation in the vicinity of the membrane after backwashing, which could justify the increase in cake resistance during the initial filtration/backwashing cycles until steady-state conditions are reached. Residual fouling resistance decreased exponentially with the duration of backwashing, obtaining a limit resistance value which was independent of the coagulant dose. Moreover, high efficiency of chemical oxygen demand (COD) removal was achieved by the tested treatment train, regardless of the coagulant dose and the initial quality of the primary effluent.
► Direct ultrafiltration of municipal wastewater can be a feasible option for water reuse. ► Pre-clarification by coagulation permits a significant reduction in cake resistance. ► Cake was detached during backwashing, but only partially dispersed in the suspension. ► High efficiency of COD removal (81–95%) was achieved, regardless of the coagulant dose.</description><identifier>ISSN: 0011-9164</identifier><identifier>EISSN: 1873-4464</identifier><identifier>DOI: 10.1016/j.desal.2012.08.005</identifier><identifier>CODEN: DSLNAH</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Backwashing ; biological treatment ; Chemical engineering ; chemical oxygen demand ; Coagulants ; coagulation ; Coagulation–flocculation ; Dead-end ultrafiltration ; desalination ; Effluents ; Exact sciences and technology ; Filtration ; Fouling ; General purification processes ; Hollow-fibre ; Liquid-liquid and fluid-solid mechanical separations ; Mathematical models ; Membrane fouling ; Membrane separation (reverse osmosis, dialysis...) ; Membranes ; municipal wastewater ; Pollution ; Primary effluent ; Settling ; Ultrafiltration ; Waste water ; Wastewater treatment ; Wastewaters ; water reuse ; Water treatment and pollution</subject><ispartof>Desalination, 2012-10, Vol.304, p.41-48</ispartof><rights>2012 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c505t-c13fcdd124ae380ba01f03881d29031f9b5b60c998183b8c53484dbfca1d01853</citedby><cites>FETCH-LOGICAL-c505t-c13fcdd124ae380ba01f03881d29031f9b5b60c998183b8c53484dbfca1d01853</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0011916412004353$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26407273$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Delgado Diaz, Sebastián</creatorcontrib><creatorcontrib>Vera Peña, Luisa</creatorcontrib><creatorcontrib>González Cabrera, Enrique</creatorcontrib><creatorcontrib>Martínez Soto, Marta</creatorcontrib><creatorcontrib>Vera Cabezas, Luisa M.</creatorcontrib><creatorcontrib>Bravo Sánchez, Luis R.</creatorcontrib><title>Effect of previous coagulation in direct ultrafiltration of primary settled municipal wastewater</title><title>Desalination</title><description>Direct ultrafiltration of primary settled municipal wastewater can be a feasible option for water reuse in several applications by avoiding biological treatment. This paper discusses the effect of previous clarification by coagulation/sedimentation of raw wastewater on ultrafiltration performance and its relationship with the main operation parameters in dead-end mode (flux and backwashing duration). Reversible and residual membrane foulings in a hollow-fibre bench-scale unit were determined over a broad range of filtration parameters and coagulant doses used in the previous clarification of domestic wastewater. Moreover, results were also compared with those obtained by ultrafiltration of biologically treated effluent from a conventional WWTP. Reversible membrane fouling, which can be described by the cake formation model, seems mainly caused by the colloidal fraction of the wastewater. In fact, under optimal coagulant dosage, the cake resistance values (expressed by αω, in m−2) were similar to those obtained with the secondary effluent. Direct observation of the membrane surface suggests a solid accumulation in the vicinity of the membrane after backwashing, which could justify the increase in cake resistance during the initial filtration/backwashing cycles until steady-state conditions are reached. Residual fouling resistance decreased exponentially with the duration of backwashing, obtaining a limit resistance value which was independent of the coagulant dose. Moreover, high efficiency of chemical oxygen demand (COD) removal was achieved by the tested treatment train, regardless of the coagulant dose and the initial quality of the primary effluent.
► Direct ultrafiltration of municipal wastewater can be a feasible option for water reuse. ► Pre-clarification by coagulation permits a significant reduction in cake resistance. ► Cake was detached during backwashing, but only partially dispersed in the suspension. ► High efficiency of COD removal (81–95%) was achieved, regardless of the coagulant dose.</description><subject>Applied sciences</subject><subject>Backwashing</subject><subject>biological treatment</subject><subject>Chemical engineering</subject><subject>chemical oxygen demand</subject><subject>Coagulants</subject><subject>coagulation</subject><subject>Coagulation–flocculation</subject><subject>Dead-end ultrafiltration</subject><subject>desalination</subject><subject>Effluents</subject><subject>Exact sciences and technology</subject><subject>Filtration</subject><subject>Fouling</subject><subject>General purification processes</subject><subject>Hollow-fibre</subject><subject>Liquid-liquid and fluid-solid mechanical separations</subject><subject>Mathematical models</subject><subject>Membrane fouling</subject><subject>Membrane separation (reverse osmosis, dialysis...)</subject><subject>Membranes</subject><subject>municipal wastewater</subject><subject>Pollution</subject><subject>Primary effluent</subject><subject>Settling</subject><subject>Ultrafiltration</subject><subject>Waste water</subject><subject>Wastewater treatment</subject><subject>Wastewaters</subject><subject>water reuse</subject><subject>Water treatment and pollution</subject><issn>0011-9164</issn><issn>1873-4464</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqFkU1v1DAQhiMEEkvhF3AgFyQuCTO247UPHFDVFqRKHGjPruOPyitvsthOK_493s2KI1xsWX7eGc_jpnmP0CMg_7zrrcs69gSQ9CB6gOFFs0GxpR1jnL1sNgCInUTOXjdvct7VI5GUbpqHK--dKe3s20NyT2Fecmtm_bhEXcI8tWFqbUhHYoklaR-O6-nmlAh7nX632ZUSnW33yxRMOOjYPutc3LMuLr1tXnkds3t33i-a--uru8tv3e2Pm--XX287M8BQOoPUG2uRMO2ogFEDeqBCoCUSKHo5DiMHI6VAQUdhBsoEs6M3Gi2gGOhF82mte0jzr8XlovYhGxejnlwdSiEfkAGXW_Z_tGIECOe8onRFTZpzTs6r88wVUkf1aqdO6tVRvQKhqvqa-nhuoLPR0Sc9mZD_RglnsCVbWrkPK-f1rPRjqsz9z1poAAAJkmAlvqyEq-qegksqm-Am49ZPUXYO_3zJH0mWpKE</recordid><startdate>20121015</startdate><enddate>20121015</enddate><creator>Delgado Diaz, Sebastián</creator><creator>Vera Peña, Luisa</creator><creator>González Cabrera, Enrique</creator><creator>Martínez Soto, Marta</creator><creator>Vera Cabezas, Luisa M.</creator><creator>Bravo Sánchez, Luis R.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TN</scope><scope>7U6</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><scope>7SU</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20121015</creationdate><title>Effect of previous coagulation in direct ultrafiltration of primary settled municipal wastewater</title><author>Delgado Diaz, Sebastián ; Vera Peña, Luisa ; González Cabrera, Enrique ; Martínez Soto, Marta ; Vera Cabezas, Luisa M. ; Bravo Sánchez, Luis R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c505t-c13fcdd124ae380ba01f03881d29031f9b5b60c998183b8c53484dbfca1d01853</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Applied sciences</topic><topic>Backwashing</topic><topic>biological treatment</topic><topic>Chemical engineering</topic><topic>chemical oxygen demand</topic><topic>Coagulants</topic><topic>coagulation</topic><topic>Coagulation–flocculation</topic><topic>Dead-end ultrafiltration</topic><topic>desalination</topic><topic>Effluents</topic><topic>Exact sciences and technology</topic><topic>Filtration</topic><topic>Fouling</topic><topic>General purification processes</topic><topic>Hollow-fibre</topic><topic>Liquid-liquid and fluid-solid mechanical separations</topic><topic>Mathematical models</topic><topic>Membrane fouling</topic><topic>Membrane separation (reverse osmosis, dialysis...)</topic><topic>Membranes</topic><topic>municipal wastewater</topic><topic>Pollution</topic><topic>Primary effluent</topic><topic>Settling</topic><topic>Ultrafiltration</topic><topic>Waste water</topic><topic>Wastewater treatment</topic><topic>Wastewaters</topic><topic>water reuse</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Delgado Diaz, Sebastián</creatorcontrib><creatorcontrib>Vera Peña, Luisa</creatorcontrib><creatorcontrib>González Cabrera, Enrique</creatorcontrib><creatorcontrib>Martínez Soto, Marta</creatorcontrib><creatorcontrib>Vera Cabezas, Luisa M.</creatorcontrib><creatorcontrib>Bravo Sánchez, Luis R.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Desalination</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Delgado Diaz, Sebastián</au><au>Vera Peña, Luisa</au><au>González Cabrera, Enrique</au><au>Martínez Soto, Marta</au><au>Vera Cabezas, Luisa M.</au><au>Bravo Sánchez, Luis R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of previous coagulation in direct ultrafiltration of primary settled municipal wastewater</atitle><jtitle>Desalination</jtitle><date>2012-10-15</date><risdate>2012</risdate><volume>304</volume><spage>41</spage><epage>48</epage><pages>41-48</pages><issn>0011-9164</issn><eissn>1873-4464</eissn><coden>DSLNAH</coden><abstract>Direct ultrafiltration of primary settled municipal wastewater can be a feasible option for water reuse in several applications by avoiding biological treatment. This paper discusses the effect of previous clarification by coagulation/sedimentation of raw wastewater on ultrafiltration performance and its relationship with the main operation parameters in dead-end mode (flux and backwashing duration). Reversible and residual membrane foulings in a hollow-fibre bench-scale unit were determined over a broad range of filtration parameters and coagulant doses used in the previous clarification of domestic wastewater. Moreover, results were also compared with those obtained by ultrafiltration of biologically treated effluent from a conventional WWTP. Reversible membrane fouling, which can be described by the cake formation model, seems mainly caused by the colloidal fraction of the wastewater. In fact, under optimal coagulant dosage, the cake resistance values (expressed by αω, in m−2) were similar to those obtained with the secondary effluent. Direct observation of the membrane surface suggests a solid accumulation in the vicinity of the membrane after backwashing, which could justify the increase in cake resistance during the initial filtration/backwashing cycles until steady-state conditions are reached. Residual fouling resistance decreased exponentially with the duration of backwashing, obtaining a limit resistance value which was independent of the coagulant dose. Moreover, high efficiency of chemical oxygen demand (COD) removal was achieved by the tested treatment train, regardless of the coagulant dose and the initial quality of the primary effluent.
► Direct ultrafiltration of municipal wastewater can be a feasible option for water reuse. ► Pre-clarification by coagulation permits a significant reduction in cake resistance. ► Cake was detached during backwashing, but only partially dispersed in the suspension. ► High efficiency of COD removal (81–95%) was achieved, regardless of the coagulant dose.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.desal.2012.08.005</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0011-9164 |
| ispartof | Desalination, 2012-10, Vol.304, p.41-48 |
| issn | 0011-9164 1873-4464 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1651406974 |
| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Backwashing biological treatment Chemical engineering chemical oxygen demand Coagulants coagulation Coagulation–flocculation Dead-end ultrafiltration desalination Effluents Exact sciences and technology Filtration Fouling General purification processes Hollow-fibre Liquid-liquid and fluid-solid mechanical separations Mathematical models Membrane fouling Membrane separation (reverse osmosis, dialysis...) Membranes municipal wastewater Pollution Primary effluent Settling Ultrafiltration Waste water Wastewater treatment Wastewaters water reuse Water treatment and pollution |
| title | Effect of previous coagulation in direct ultrafiltration of primary settled municipal wastewater |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-31T13%3A02%3A40IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Effect%20of%20previous%20coagulation%20in%20direct%20ultrafiltration%20of%20primary%20settled%20municipal%20wastewater&rft.jtitle=Desalination&rft.au=Delgado%20Diaz,%20Sebasti%C3%A1n&rft.date=2012-10-15&rft.volume=304&rft.spage=41&rft.epage=48&rft.pages=41-48&rft.issn=0011-9164&rft.eissn=1873-4464&rft.coden=DSLNAH&rft_id=info:doi/10.1016/j.desal.2012.08.005&rft_dat=%3Cproquest_cross%3E1651406974%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1069202666&rft_id=info:pmid/&rft_els_id=S0011916412004353&rfr_iscdi=true |