DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chung, C.M. | - |
dc.contributor.author | Yamamoto, K. | - |
dc.contributor.author | Cho, K. | - |
dc.date.accessioned | 2019-12-03T09:50:03Z | - |
dc.date.available | 2019-12-03T09:50:03Z | - |
dc.date.created | 2019-09-24 | - |
dc.date.issued | 2019-12 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/100170 | - |
dc.description.abstract | This study reports that electrochemical oxidation (EO) coupled with non-woven fabric (NWF) filter synergistically mitigated fouling in a submerged membrane bioreactor (MBR) under hydraulic retention time (HRT) of 1 h. Our NWF-EO-MBR was equipped with NWF prefilter cage surrounding microfiltration (MF) membrane with IrO2 anodes in vicinity. Continuous operation showed a retarded increase of transmembrane pressure at intermittent current density (5 mA cm−2) to prolong operation duration by 40% under constant flux (13.75 L m−2 h−1). Primary separation of bio-flocs by NWF not only reduced physically removable fouling on MF, but also allowed augmented concentration of electrolytic free chlorine (FC) near 4.0 mgCl2 L−1 inside the NWF cage. The FC degraded dissolved foulants to reduce physically irremovable hydraulic resistance of MF. A limited nitrification under the short HRT was assisted by electrochemical breakpoint chlorination, resulting 72% total nitrogen removal efficiency on average. Terminal restriction fragment length polymorphism fingerprinting indicated that the microbial community in mixed liquor was less influenced by FC than that in bio-cake on MF. The energy consumption of EO was approximated to 28 Wh per m3 of permeate. © 2019 Elsevier B.V. | - |
dc.language | English | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isPartOf | Journal of Membrane Science | - |
dc.title | A submerged membrane bioreactor under unprecedentedly short hydraulic retention time enabled by non-woven fabric pre-filtration and electrochemical membrane cleaning | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.memsci.2019.117355 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Journal of Membrane Science, v.592 | - |
dc.identifier.wosid | 000484657900001 | - |
dc.citation.title | Journal of Membrane Science | - |
dc.citation.volume | 592 | - |
dc.contributor.affiliatedAuthor | Cho, K. | - |
dc.identifier.scopusid | 2-s2.0-85070723410 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ELECTRO-BIOREACTOR | - |
dc.subject.keywordPlus | ACTIVATED-SLUDGE | - |
dc.subject.keywordPlus | FREE CHLORINE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | MBR | - |
dc.subject.keywordAuthor | Electrochemical oxidation | - |
dc.subject.keywordAuthor | Fouling | - |
dc.subject.keywordAuthor | Free chlorine | - |
dc.subject.keywordAuthor | Membrane bioreactor | - |
dc.subject.keywordAuthor | Non-woven fiber | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Polymer Science | - |
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