An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment
Komurcuoda leachate treatment plant, Istanbul, which consists of membrane bioreactor (MBR) and nanofiltration (NF) system, faced rapid flux decline in membranes after 3-year successful operation. To compensate rapid flux decline in membranes, the fouled membranes were renewed but replacement of the...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2015/850530 |
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| author | Ibrahim Demir Ismail Koyuncu Serkan Guclu Senol Yildiz Vahit Balahorli Suphi Caglar Turker Turken Mehmet E. Pasaoglu Recep Kaya Reyhan Sengur-Tasdemir |
| author_facet | Ibrahim Demir Ismail Koyuncu Serkan Guclu Senol Yildiz Vahit Balahorli Suphi Caglar Turker Turken Mehmet E. Pasaoglu Recep Kaya Reyhan Sengur-Tasdemir |
| author_sort | Ibrahim Demir |
| collection | DOAJ |
| description | Komurcuoda leachate treatment plant, Istanbul, which consists of membrane bioreactor (MBR) and nanofiltration (NF) system, faced rapid flux decline in membranes after 3-year successful operation. To compensate rapid flux decline in membranes, the fouled membranes were renewed but replacement of the membranes did not solve the problem. To find the reasons and make a comprehensive analysis, membrane autopsy was performed. Visual and physical inspection of the modules and some instrumental analysis were conducted for membrane autopsy. Membranes were found severely fouled with organic and inorganic foulants. Main foulant was iron which was deposited on surface. The main reason was found to be the changing of aerator type of MBR. When surface aerators were exchanged with bottom diffusers which led to increasing of dissolved oxygen (DO) level of the basin, iron particles were oxidized and they converted into particulate insoluble form. It was thought that probably this insoluble form of the iron particles was the main cause of decreased membrane performance. After the diagnosis, a new pretreatment alternative including a new iron antiscalant was suggested and system performance has been recovered. |
| format | Article |
| id | doaj-art-9084023abcd24736a8be78c0c3fb84c8 |
| institution | DOAJ |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-9084023abcd24736a8be78c0c3fb84c82025-08-20T03:20:30ZengWileyThe Scientific World Journal2356-61401537-744X2015-01-01201510.1155/2015/850530850530An Autopsy of Nanofiltration Membrane Used for Landfill Leachate TreatmentIbrahim Demir0Ismail Koyuncu1Serkan Guclu2Senol Yildiz3Vahit Balahorli4Suphi Caglar5Turker Turken6Mehmet E. Pasaoglu7Recep Kaya8Reyhan Sengur-Tasdemir9Environmental Engineering Department, Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyEnvironmental Engineering Department, Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyEnvironmental Engineering Department, Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyISTAC, Istanbul Environmental Management in Industry and Trade Inc., 34379 Istanbul, TurkeyISTAC, Istanbul Environmental Management in Industry and Trade Inc., 34379 Istanbul, TurkeyISTAC, Istanbul Environmental Management in Industry and Trade Inc., 34379 Istanbul, TurkeyEnvironmental Engineering Department, Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyEnvironmental Engineering Department, Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyEnvironmental Engineering Department, Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyNational Research Center on Membrane Technologies (MEM-TEK), Istanbul Technical University, Maslak, 34469 Istanbul, TurkeyKomurcuoda leachate treatment plant, Istanbul, which consists of membrane bioreactor (MBR) and nanofiltration (NF) system, faced rapid flux decline in membranes after 3-year successful operation. To compensate rapid flux decline in membranes, the fouled membranes were renewed but replacement of the membranes did not solve the problem. To find the reasons and make a comprehensive analysis, membrane autopsy was performed. Visual and physical inspection of the modules and some instrumental analysis were conducted for membrane autopsy. Membranes were found severely fouled with organic and inorganic foulants. Main foulant was iron which was deposited on surface. The main reason was found to be the changing of aerator type of MBR. When surface aerators were exchanged with bottom diffusers which led to increasing of dissolved oxygen (DO) level of the basin, iron particles were oxidized and they converted into particulate insoluble form. It was thought that probably this insoluble form of the iron particles was the main cause of decreased membrane performance. After the diagnosis, a new pretreatment alternative including a new iron antiscalant was suggested and system performance has been recovered.http://dx.doi.org/10.1155/2015/850530 |
| spellingShingle | Ibrahim Demir Ismail Koyuncu Serkan Guclu Senol Yildiz Vahit Balahorli Suphi Caglar Turker Turken Mehmet E. Pasaoglu Recep Kaya Reyhan Sengur-Tasdemir An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment The Scientific World Journal |
| title | An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment |
| title_full | An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment |
| title_fullStr | An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment |
| title_full_unstemmed | An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment |
| title_short | An Autopsy of Nanofiltration Membrane Used for Landfill Leachate Treatment |
| title_sort | autopsy of nanofiltration membrane used for landfill leachate treatment |
| url | http://dx.doi.org/10.1155/2015/850530 |
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