Disinfection byproduct formation during biofiltration cycle: Implications for drinking water production
•TOC and DOC showed slight decrease in concentration after full-scale biofiltration.•Full-scale biofiltration showed a reduction in TTHM and HAA5 formation potentials.•Shorter filtration cycle times promote the largest reduction in TTHMfp and HAA5fp.•Higher quantities of biofilm and attached cells c...
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| Veröffentlicht in: | Chemosphere (Oxford) 2015-10, Vol.136, p.190-197 |
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| creator | Delatolla, R. Séguin, C. Springthorpe, S. Gorman, E. Campbell, A. Douglas, I. |
| description | •TOC and DOC showed slight decrease in concentration after full-scale biofiltration.•Full-scale biofiltration showed a reduction in TTHM and HAA5 formation potentials.•Shorter filtration cycle times promote the largest reduction in TTHMfp and HAA5fp.•Higher quantities of biofilm and attached cells correspond to higher DBPfp.•Biofilm growth in biofilters lowers effectiveness of biofiltration on DBP removal.
The goal of this study was to investigate the potential of biofiltration to reduce the formation potential of disinfection byproducts (DBPs). Particularly, the work investigates the effect of the duration of the filter cycle on the formation potential of total trihalomethanes (TTHM) and five species of haloacetic acids (HAA5), dissolved oxygen (DO), organic carbon, nitrogen and total phosphorous concentrations along with biofilm coverage of the filter media and biomass viability of the attached cells. The study was conducted on a full-scale biologically active filter, with anthracite and sand media, at the Britannia water treatment plant (WTP), located in Ottawa, Ontario, Canada. The formation potential of both TTHMs and HAA5s decreased due to biofiltration. However the lowest formation potentials for both groups of DBPs and or their precursors were observed immediately following a backwash event. Hence, the highest percent removal of DBPs was observed during the early stages of the biofiltration cycle, which suggests that a higher frequency of backwashing will reduce the formation of DBPs. Variable pressure scanning electron microscopy (VPSEM) analysis shows that biofilm coverage of anthracite and sand media increases as the filtration cycle progressed, while biomass viability analysis demonstrates that the percentage of cells attached to the anthracite and sand media also increases as the filtration cycle progresses. These results suggest that the development and growth of biofilm on the filters increases the DPB formation potential. |
| doi_str_mv | 10.1016/j.chemosphere.2015.05.001 |
| format | Article |
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The goal of this study was to investigate the potential of biofiltration to reduce the formation potential of disinfection byproducts (DBPs). Particularly, the work investigates the effect of the duration of the filter cycle on the formation potential of total trihalomethanes (TTHM) and five species of haloacetic acids (HAA5), dissolved oxygen (DO), organic carbon, nitrogen and total phosphorous concentrations along with biofilm coverage of the filter media and biomass viability of the attached cells. The study was conducted on a full-scale biologically active filter, with anthracite and sand media, at the Britannia water treatment plant (WTP), located in Ottawa, Ontario, Canada. The formation potential of both TTHMs and HAA5s decreased due to biofiltration. However the lowest formation potentials for both groups of DBPs and or their precursors were observed immediately following a backwash event. Hence, the highest percent removal of DBPs was observed during the early stages of the biofiltration cycle, which suggests that a higher frequency of backwashing will reduce the formation of DBPs. Variable pressure scanning electron microscopy (VPSEM) analysis shows that biofilm coverage of anthracite and sand media increases as the filtration cycle progressed, while biomass viability analysis demonstrates that the percentage of cells attached to the anthracite and sand media also increases as the filtration cycle progresses. These results suggest that the development and growth of biofilm on the filters increases the DPB formation potential.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2015.05.001</identifier><identifier>PMID: 26002158</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Anthracite ; Biofilm ; Biofilms ; Biofiltration ; Biomass ; Canada ; Disinfectants - analysis ; Disinfection - methods ; Disinfection byproducts ; Drinking Water - analysis ; Drinking Water - chemistry ; Filtration ; Filtration cycle ; Formations ; Media ; Nitrogen - analysis ; Ontario ; Sand ; Silicon Dioxide - analysis ; Total organic carbon ; Trihalomethanes - analysis ; Viability ; Water Pollutants, Chemical - analysis ; Water Purification - methods ; Water Supply</subject><ispartof>Chemosphere (Oxford), 2015-10, Vol.136, p.190-197</ispartof><rights>2015 Elsevier Ltd</rights><rights>Copyright © 2015 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c443t-aaed0bbf41433a6b716905a0516436801c01a663924e39b0a609fdbf7336702e3</citedby><cites>FETCH-LOGICAL-c443t-aaed0bbf41433a6b716905a0516436801c01a663924e39b0a609fdbf7336702e3</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.2015.05.001$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26002158$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Delatolla, R.</creatorcontrib><creatorcontrib>Séguin, C.</creatorcontrib><creatorcontrib>Springthorpe, S.</creatorcontrib><creatorcontrib>Gorman, E.</creatorcontrib><creatorcontrib>Campbell, A.</creatorcontrib><creatorcontrib>Douglas, I.</creatorcontrib><title>Disinfection byproduct formation during biofiltration cycle: Implications for drinking water production</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>•TOC and DOC showed slight decrease in concentration after full-scale biofiltration.•Full-scale biofiltration showed a reduction in TTHM and HAA5 formation potentials.•Shorter filtration cycle times promote the largest reduction in TTHMfp and HAA5fp.•Higher quantities of biofilm and attached cells correspond to higher DBPfp.•Biofilm growth in biofilters lowers effectiveness of biofiltration on DBP removal.
The goal of this study was to investigate the potential of biofiltration to reduce the formation potential of disinfection byproducts (DBPs). Particularly, the work investigates the effect of the duration of the filter cycle on the formation potential of total trihalomethanes (TTHM) and five species of haloacetic acids (HAA5), dissolved oxygen (DO), organic carbon, nitrogen and total phosphorous concentrations along with biofilm coverage of the filter media and biomass viability of the attached cells. The study was conducted on a full-scale biologically active filter, with anthracite and sand media, at the Britannia water treatment plant (WTP), located in Ottawa, Ontario, Canada. The formation potential of both TTHMs and HAA5s decreased due to biofiltration. However the lowest formation potentials for both groups of DBPs and or their precursors were observed immediately following a backwash event. Hence, the highest percent removal of DBPs was observed during the early stages of the biofiltration cycle, which suggests that a higher frequency of backwashing will reduce the formation of DBPs. Variable pressure scanning electron microscopy (VPSEM) analysis shows that biofilm coverage of anthracite and sand media increases as the filtration cycle progressed, while biomass viability analysis demonstrates that the percentage of cells attached to the anthracite and sand media also increases as the filtration cycle progresses. These results suggest that the development and growth of biofilm on the filters increases the DPB formation potential.</description><subject>Anthracite</subject><subject>Biofilm</subject><subject>Biofilms</subject><subject>Biofiltration</subject><subject>Biomass</subject><subject>Canada</subject><subject>Disinfectants - analysis</subject><subject>Disinfection - methods</subject><subject>Disinfection byproducts</subject><subject>Drinking Water - analysis</subject><subject>Drinking Water - chemistry</subject><subject>Filtration</subject><subject>Filtration cycle</subject><subject>Formations</subject><subject>Media</subject><subject>Nitrogen - analysis</subject><subject>Ontario</subject><subject>Sand</subject><subject>Silicon Dioxide - analysis</subject><subject>Total organic carbon</subject><subject>Trihalomethanes - analysis</subject><subject>Viability</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Purification - methods</subject><subject>Water Supply</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkVtr3DAQhUVpaDaXv1Dct754O2NdbOWtbK4QyEv7LGR5nGjry0ayW_bfR5vdlrw1MCA4-s4cmMPYF4QlAqpv66V7on6MmycKtCwA5RLSAH5gC6xKnWOhq49sASBkriSXx-wkxjUkQkn9iR0XCqBAWS3Y46WPfmjJTX4csnq7CWMzuylrx9DbV62Zgx8es9qPre-msBfd1nV0kd31m867VynuLFmT2F87_I-dKGSHben7jB21tot0fnhP2c_rqx-r2_z-4eZu9f0-d0LwKbeWGqjrVqDg3Kq6RKVBWpCoBFcVoAO0SnFdCOK6BqtAt03dlpyrEgrip-zrfm-Kfp4pTqb30VHX2YHGORosQSdYFPw9KIpSQDrgf1FVlUqglkVC9R51YYwxUGs2wfc2bA2C2bVn1uZNe2bXnoE0gMn7-RAz1z01_5x_60rAag9QOuFvT8FE52lw1PiQKjTN6N8R8wJoF7Ic</recordid><startdate>20151001</startdate><enddate>20151001</enddate><creator>Delatolla, R.</creator><creator>Séguin, C.</creator><creator>Springthorpe, S.</creator><creator>Gorman, E.</creator><creator>Campbell, A.</creator><creator>Douglas, I.</creator><general>Elsevier Ltd</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>7X8</scope><scope>7QH</scope><scope>7ST</scope><scope>7U7</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20151001</creationdate><title>Disinfection byproduct formation during biofiltration cycle: Implications for drinking water production</title><author>Delatolla, R. ; Séguin, C. ; Springthorpe, S. ; Gorman, E. ; Campbell, A. ; Douglas, I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c443t-aaed0bbf41433a6b716905a0516436801c01a663924e39b0a609fdbf7336702e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Anthracite</topic><topic>Biofilm</topic><topic>Biofilms</topic><topic>Biofiltration</topic><topic>Biomass</topic><topic>Canada</topic><topic>Disinfectants - analysis</topic><topic>Disinfection - methods</topic><topic>Disinfection byproducts</topic><topic>Drinking Water - analysis</topic><topic>Drinking Water - chemistry</topic><topic>Filtration</topic><topic>Filtration cycle</topic><topic>Formations</topic><topic>Media</topic><topic>Nitrogen - analysis</topic><topic>Ontario</topic><topic>Sand</topic><topic>Silicon Dioxide - analysis</topic><topic>Total organic carbon</topic><topic>Trihalomethanes - analysis</topic><topic>Viability</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Purification - methods</topic><topic>Water Supply</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Delatolla, R.</creatorcontrib><creatorcontrib>Séguin, C.</creatorcontrib><creatorcontrib>Springthorpe, S.</creatorcontrib><creatorcontrib>Gorman, E.</creatorcontrib><creatorcontrib>Campbell, A.</creatorcontrib><creatorcontrib>Douglas, I.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Toxicology 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) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment 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>Delatolla, R.</au><au>Séguin, C.</au><au>Springthorpe, S.</au><au>Gorman, E.</au><au>Campbell, A.</au><au>Douglas, I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Disinfection byproduct formation during biofiltration cycle: Implications for drinking water production</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2015-10-01</date><risdate>2015</risdate><volume>136</volume><spage>190</spage><epage>197</epage><pages>190-197</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><abstract>•TOC and DOC showed slight decrease in concentration after full-scale biofiltration.•Full-scale biofiltration showed a reduction in TTHM and HAA5 formation potentials.•Shorter filtration cycle times promote the largest reduction in TTHMfp and HAA5fp.•Higher quantities of biofilm and attached cells correspond to higher DBPfp.•Biofilm growth in biofilters lowers effectiveness of biofiltration on DBP removal.
The goal of this study was to investigate the potential of biofiltration to reduce the formation potential of disinfection byproducts (DBPs). Particularly, the work investigates the effect of the duration of the filter cycle on the formation potential of total trihalomethanes (TTHM) and five species of haloacetic acids (HAA5), dissolved oxygen (DO), organic carbon, nitrogen and total phosphorous concentrations along with biofilm coverage of the filter media and biomass viability of the attached cells. The study was conducted on a full-scale biologically active filter, with anthracite and sand media, at the Britannia water treatment plant (WTP), located in Ottawa, Ontario, Canada. The formation potential of both TTHMs and HAA5s decreased due to biofiltration. However the lowest formation potentials for both groups of DBPs and or their precursors were observed immediately following a backwash event. Hence, the highest percent removal of DBPs was observed during the early stages of the biofiltration cycle, which suggests that a higher frequency of backwashing will reduce the formation of DBPs. Variable pressure scanning electron microscopy (VPSEM) analysis shows that biofilm coverage of anthracite and sand media increases as the filtration cycle progressed, while biomass viability analysis demonstrates that the percentage of cells attached to the anthracite and sand media also increases as the filtration cycle progresses. These results suggest that the development and growth of biofilm on the filters increases the DPB formation potential.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>26002158</pmid><doi>10.1016/j.chemosphere.2015.05.001</doi><tpages>8</tpages></addata></record> |
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| subjects | Anthracite Biofilm Biofilms Biofiltration Biomass Canada Disinfectants - analysis Disinfection - methods Disinfection byproducts Drinking Water - analysis Drinking Water - chemistry Filtration Filtration cycle Formations Media Nitrogen - analysis Ontario Sand Silicon Dioxide - analysis Total organic carbon Trihalomethanes - analysis Viability Water Pollutants, Chemical - analysis Water Purification - methods Water Supply |
| title | Disinfection byproduct formation during biofiltration cycle: Implications for drinking water production |
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