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- Publisher Website: 10.1016/j.scitotenv.2018.06.220
- Scopus: eid_2-s2.0-85049436712
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Article: Biofouling in ultrafiltration process for drinking water treatment and its control by chlorinated-water and pure water backwashing
Title | Biofouling in ultrafiltration process for drinking water treatment and its control by chlorinated-water and pure water backwashing |
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Authors | |
Keywords | Ammonia Backwashing Biofouling Drinking water treatment Ultrafiltration |
Issue Date | 2018 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv |
Citation | Science of the Total Environment, 2018, v. 644, p. 306-314 How to Cite? |
Abstract | We investigated biofouling in ultrafiltration (UF) for drinking water treatment and its control by backwashing with chlorinated-water or pure water. By using sodium azide to suppress biological growth, the relative contribution of biofouling to total fouling was estimated, and its value (5.3–56.0%) varied with the feed water, and increased with the increases of filtration time and membrane flux. The biofouling layer could partially remove biodegradable organic matter and ammonia (32.9–74.2%). Backwashing using chlorinated-water partly inactivated the microorganisms (23.8%) but increased the content of extracellular polymeric substances (7.7%) in the biofouling layer. In contrast, backwashing using pure water led to a looser and more porous fouling layer according to optical coherence tomography observation. Consequently, the latter was more effective in reducing fouling resistance (33.41% reduction) compared to backwashing by chlorinated-water (8.6%). These findings reveal the critical roles of biofouling in pollutants removal in addition to membrane permeability, which has important implications for addressing seasonal ammonia pollution. © 2018 |
Persistent Identifier | http://hdl.handle.net/10722/264576 |
ISSN | 2023 Impact Factor: 8.2 2023 SCImago Journal Rankings: 1.998 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Shao, S | - |
dc.contributor.author | Wang, Y | - |
dc.contributor.author | Shi, D | - |
dc.contributor.author | Zhang, X | - |
dc.contributor.author | Tang, C | - |
dc.contributor.author | Liu, Z | - |
dc.contributor.author | Li, J | - |
dc.date.accessioned | 2018-10-22T07:57:15Z | - |
dc.date.available | 2018-10-22T07:57:15Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Science of the Total Environment, 2018, v. 644, p. 306-314 | - |
dc.identifier.issn | 0048-9697 | - |
dc.identifier.uri | http://hdl.handle.net/10722/264576 | - |
dc.description.abstract | We investigated biofouling in ultrafiltration (UF) for drinking water treatment and its control by backwashing with chlorinated-water or pure water. By using sodium azide to suppress biological growth, the relative contribution of biofouling to total fouling was estimated, and its value (5.3–56.0%) varied with the feed water, and increased with the increases of filtration time and membrane flux. The biofouling layer could partially remove biodegradable organic matter and ammonia (32.9–74.2%). Backwashing using chlorinated-water partly inactivated the microorganisms (23.8%) but increased the content of extracellular polymeric substances (7.7%) in the biofouling layer. In contrast, backwashing using pure water led to a looser and more porous fouling layer according to optical coherence tomography observation. Consequently, the latter was more effective in reducing fouling resistance (33.41% reduction) compared to backwashing by chlorinated-water (8.6%). These findings reveal the critical roles of biofouling in pollutants removal in addition to membrane permeability, which has important implications for addressing seasonal ammonia pollution. © 2018 | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv | - |
dc.relation.ispartof | Science of the Total Environment | - |
dc.subject | Ammonia | - |
dc.subject | Backwashing | - |
dc.subject | Biofouling | - |
dc.subject | Drinking water treatment | - |
dc.subject | Ultrafiltration | - |
dc.title | Biofouling in ultrafiltration process for drinking water treatment and its control by chlorinated-water and pure water backwashing | - |
dc.type | Article | - |
dc.identifier.email | Shao, S: shaosl@hku.hk | - |
dc.identifier.email | Tang, C: tangc@hku.hk | - |
dc.identifier.authority | Tang, C=rp01765 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.scitotenv.2018.06.220 | - |
dc.identifier.scopus | eid_2-s2.0-85049436712 | - |
dc.identifier.hkuros | 295705 | - |
dc.identifier.volume | 644 | - |
dc.identifier.spage | 306 | - |
dc.identifier.epage | 314 | - |
dc.identifier.isi | WOS:000445164000031 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0048-9697 | - |