An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption
Roughing filters are types of porous media filter used in pretreatment systems where the raw water contains a large amount of suspended particles (SPs) and organic matter. Mesh tube filtration (MTF) media are roughing-filter media composed of low-density polyethylene used for SP removal during waste...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/12/10/2804 |
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| author | Dong-Ho Kim Changkyoo Choi Chulmin Lee Rusnang Syamsul Adha Thanh-Tin Nguyen Sang-Jun Ahn Hee-Jong Son In S. Kim |
| author_facet | Dong-Ho Kim Changkyoo Choi Chulmin Lee Rusnang Syamsul Adha Thanh-Tin Nguyen Sang-Jun Ahn Hee-Jong Son In S. Kim |
| author_sort | Dong-Ho Kim |
| collection | DOAJ |
| description | Roughing filters are types of porous media filter used in pretreatment systems where the raw water contains a large amount of suspended particles (SPs) and organic matter. Mesh tube filtration (MTF) media are roughing-filter media composed of low-density polyethylene used for SP removal during wastewater treatment. In this study, we present an improved MTF design—a porous filter bed (PFB), which exhibits superior SP removal performance compared to conventional MTF media. We then compare the applicability of MTF and PFB to both the primary pretreatment process for seawater desalination and the water reuse process. In bench-scale SP removal experiments, PFB shows removal rates of 46.7%, 68.0%, 67.6%, and 68.4% at hydraulic retention times of 15, 20, 30, and 60 min, respectively, which are better than those of MTF. The specific energy consumption (SEC) of batch dissolved air flotation (DAF) was known to range from 0.035 to 0.047 kWh/m<sup>3</sup>, whereas the SEC calculated for pilot-scale MTF and PFB is 0.027 kWh/m<sup>3</sup> and minimum energy for influent supply, respectively. This suggests that PFB can compete with DAF as a primary pretreatment process. MTF predominantly removes SPs by sedimentation, whereas SP removal in PFB typically occurs via deposition of SPs on the mesh tube media. |
| first_indexed | 2024-03-10T15:44:36Z |
| format | Article |
| id | doaj.art-a73a5087e836499e8d70e6dd2aef49e4 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T15:44:36Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-a73a5087e836499e8d70e6dd2aef49e42023-11-20T16:31:33ZengMDPI AGWater2073-44412020-10-011210280410.3390/w12102804An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy ConsumptionDong-Ho Kim0Changkyoo Choi1Chulmin Lee2Rusnang Syamsul Adha3Thanh-Tin Nguyen4Sang-Jun Ahn5Hee-Jong Son6In S. Kim7Global Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, KoreaWater Convergence Research Team, Department of Water Industry Promotion, Korea Water Cluster, Korea Environment Corporation, Daegu 43008, KoreaGlobal Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, KoreaGlobal Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, KoreaGlobal Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, KoreaKEOSONG Research Institute, KEOSONG Construction Co., Ltd., Seoul 06640, KoreaWater Quality Institute, Water Authority Busan, Gimhae, Gyeongnam 50804, KoreaGlobal Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, KoreaRoughing filters are types of porous media filter used in pretreatment systems where the raw water contains a large amount of suspended particles (SPs) and organic matter. Mesh tube filtration (MTF) media are roughing-filter media composed of low-density polyethylene used for SP removal during wastewater treatment. In this study, we present an improved MTF design—a porous filter bed (PFB), which exhibits superior SP removal performance compared to conventional MTF media. We then compare the applicability of MTF and PFB to both the primary pretreatment process for seawater desalination and the water reuse process. In bench-scale SP removal experiments, PFB shows removal rates of 46.7%, 68.0%, 67.6%, and 68.4% at hydraulic retention times of 15, 20, 30, and 60 min, respectively, which are better than those of MTF. The specific energy consumption (SEC) of batch dissolved air flotation (DAF) was known to range from 0.035 to 0.047 kWh/m<sup>3</sup>, whereas the SEC calculated for pilot-scale MTF and PFB is 0.027 kWh/m<sup>3</sup> and minimum energy for influent supply, respectively. This suggests that PFB can compete with DAF as a primary pretreatment process. MTF predominantly removes SPs by sedimentation, whereas SP removal in PFB typically occurs via deposition of SPs on the mesh tube media.https://www.mdpi.com/2073-4441/12/10/2804suspended particlesroughing filtersmesh tube filtrationporous filter bedspecific energy consumption |
| spellingShingle | Dong-Ho Kim Changkyoo Choi Chulmin Lee Rusnang Syamsul Adha Thanh-Tin Nguyen Sang-Jun Ahn Hee-Jong Son In S. Kim An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption Water suspended particles roughing filters mesh tube filtration porous filter bed specific energy consumption |
| title | An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption |
| title_full | An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption |
| title_fullStr | An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption |
| title_full_unstemmed | An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption |
| title_short | An Improved Configuration of Vertical-Flow Mesh Tube Filters for Seawater Pretreatment: Performance, Cleaning, and Energy Consumption |
| title_sort | improved configuration of vertical flow mesh tube filters for seawater pretreatment performance cleaning and energy consumption |
| topic | suspended particles roughing filters mesh tube filtration porous filter bed specific energy consumption |
| url | https://www.mdpi.com/2073-4441/12/10/2804 |
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