Effect of Pre-Ozonation on Organics Removal by In-Line Direct Filtration
A pilot-scale study of the effects of pre-ozonation on the performance of in-line direct filtration was carried out. Performance measures included filtered water turbidity, unit filter run volumes, and organics in filtered waters: DOC, UV254, AOC and DBPs. Continuous operation of four dual media GAC...
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| Veröffentlicht in: | Water science and technology 1993-01, Vol.27 (11), p.81-90 |
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| container_title | Water science and technology |
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| creator | Tobiason, JE Edzwald, J K Reckhow, DA Switzenbaum, MS |
| description | A pilot-scale study of the effects of pre-ozonation on the performance of in-line direct filtration was carried out. Performance measures included filtered water turbidity, unit filter run volumes, and organics in filtered waters: DOC, UV254, AOC and DBPs. Continuous operation of four dual media GAC/sand filters with and without pre-ozonation and chlorinated backwash and a dual media anthracite/sand filter were compared to full-scale performance. Pre-ozonation frequently results in longer filter runs, causes a twofold increase in raw water AOC and has little effect on raw water DOC. GAC/sand filters consistently reduced the AOC in the ozone train to levels below that of the full-scale plant and also provided 25 % lower DOC levels as compared to anthracite/sand filters. The effect of ozone and filtration on chlorinated DBPs followed overall DOC removal while DBPs created by ozonation followed AOC removal trends. |
| doi_str_mv | 10.2166/wst.1993.0267 |
| format | Article |
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Performance measures included filtered water turbidity, unit filter run volumes, and organics in filtered waters: DOC, UV254, AOC and DBPs. Continuous operation of four dual media GAC/sand filters with and without pre-ozonation and chlorinated backwash and a dual media anthracite/sand filter were compared to full-scale performance. Pre-ozonation frequently results in longer filter runs, causes a twofold increase in raw water AOC and has little effect on raw water DOC. GAC/sand filters consistently reduced the AOC in the ozone train to levels below that of the full-scale plant and also provided 25 % lower DOC levels as compared to anthracite/sand filters. The effect of ozone and filtration on chlorinated DBPs followed overall DOC removal while DBPs created by ozonation followed AOC removal trends.</description><identifier>ISSN: 0273-1223</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.1993.0267</identifier><language>eng</language><publisher>London: IWA Publishing</publisher><subject>Anthracite ; Backwash ; Biodegradation ; By products ; Byproducts ; Carbon ; Chlorination ; Disinfection ; Drinking water ; Filters ; Filtration ; Laboratories ; Organic compounds ; Ozonation ; Ozone ; Ozonization ; Polymers ; Q1 ; Raw water ; Removal ; Sand ; Sand filters ; Turbidity ; Water purification ; Water quality</subject><ispartof>Water science and technology, 1993-01, Vol.27 (11), p.81-90</ispartof><rights>Copyright IWA Publishing Jun 1993</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c387t-1357d916c6184cd86e36641844e9abb1f57ed0ca66c20d3ad6d5f6283af533f93</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,778,782,787,788,23917,23918,25127,27911,27912</link.rule.ids></links><search><creatorcontrib>Tobiason, JE</creatorcontrib><creatorcontrib>Edzwald, J K</creatorcontrib><creatorcontrib>Reckhow, DA</creatorcontrib><creatorcontrib>Switzenbaum, MS</creatorcontrib><title>Effect of Pre-Ozonation on Organics Removal by In-Line Direct Filtration</title><title>Water science and technology</title><description>A pilot-scale study of the effects of pre-ozonation on the performance of in-line direct filtration was carried out. 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| ispartof | Water science and technology, 1993-01, Vol.27 (11), p.81-90 |
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| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals |
| subjects | Anthracite Backwash Biodegradation By products Byproducts Carbon Chlorination Disinfection Drinking water Filters Filtration Laboratories Organic compounds Ozonation Ozone Ozonization Polymers Q1 Raw water Removal Sand Sand filters Turbidity Water purification Water quality |
| title | Effect of Pre-Ozonation on Organics Removal by In-Line Direct Filtration |
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