Nitrogen transformation in slightly polluted surface water by a novel biofilm reactor: Long-term performance and microbial population characteristics
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Xia, Yinfeng | - |
dc.contributor.author | Zhu, Lifang | - |
dc.contributor.author | Geng, Nan | - |
dc.contributor.author | Lu, Debao | - |
dc.contributor.author | Xu, Cundong | - |
dc.contributor.author | Withana, Piumi Amasha | - |
dc.contributor.author | Vithanage, Meththika | - |
dc.contributor.author | Khan, Eakalak | - |
dc.contributor.author | Ok, Yong Sik | - |
dc.date.accessioned | 2022-08-12T10:40:58Z | - |
dc.date.available | 2022-08-12T10:40:58Z | - |
dc.date.created | 2022-08-12 | - |
dc.date.issued | 2022-07-10 | - |
dc.identifier.issn | 0048-9697 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/142898 | - |
dc.description.abstract | This study proposes a modular floating biofilm reactor (MFBR) for in situ nitrogen removal from slightly polluted water in rivers using enriched indigenous microorganisms. Its main structure is a 60 cm x 60 cm x 90 cm rectangular reactor filled with hackettens. After a 96-day startup, the removal efficiencies of ammonia-N and total N (TN) reached 80% and 25%, respectively, with a hydraulic retention time (HRT) of 10 h, whereas those in a control reactor (without biofilm) were only 4.9% and 0.2%, respectively. The influences of HRT and dissolved oxygen (DO) were also investigated. As a key factor, HRT significantly affected the removal efficiencies of ammonia-N and TN. When HRT was close to the actual value for a river studied (2.4 min), the removal efficiencies of ammonia-N and TN were only 8.7% and 3.1%, respectively. Aeration increased the concentration of DO in water, which enhanced nitrification but inhibited denitrification. When HRT was 2.4 min, aeration intensity was 20 L/min; the ammonia-N and TN removal rates were 9.5 g/(m2 center dot d) and 11.3 g/(m2 center dot d), respectively. The results of microbial community analysis indicated that the microorganisms forming the biofilm were indigenous bacteria. The findings demonstrated a concept-proof of MFBR, which may be evaluated in scaling up investigation for developing a new methodology for nitrogen removal from slightly polluted surface water in plain river networks. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | DYNAMIC MEMBRANE REACTOR | - |
dc.subject | SP NOV. | - |
dc.subject | AEROBIC DENITRIFICATION | - |
dc.subject | REMOVAL CHARACTERISTICS | - |
dc.subject | OXYGEN CONCENTRATION | - |
dc.subject | FLOATING BED | - |
dc.subject | PHOSPHORUS | - |
dc.subject | BACTERIUM | - |
dc.subject | COMMUNITY | - |
dc.subject | NUTRIENT | - |
dc.title | Nitrogen transformation in slightly polluted surface water by a novel biofilm reactor: Long-term performance and microbial population characteristics | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ok, Yong Sik | - |
dc.identifier.doi | 10.1016/j.scitotenv.2022.154623 | - |
dc.identifier.scopusid | 2-s2.0-85126890518 | - |
dc.identifier.wosid | 000791668600003 | - |
dc.identifier.bibliographicCitation | SCIENCE OF THE TOTAL ENVIRONMENT, v.829 | - |
dc.relation.isPartOf | SCIENCE OF THE TOTAL ENVIRONMENT | - |
dc.citation.title | SCIENCE OF THE TOTAL ENVIRONMENT | - |
dc.citation.volume | 829 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | DYNAMIC MEMBRANE REACTOR | - |
dc.subject.keywordPlus | SP NOV. | - |
dc.subject.keywordPlus | AEROBIC DENITRIFICATION | - |
dc.subject.keywordPlus | REMOVAL CHARACTERISTICS | - |
dc.subject.keywordPlus | OXYGEN CONCENTRATION | - |
dc.subject.keywordPlus | FLOATING BED | - |
dc.subject.keywordPlus | PHOSPHORUS | - |
dc.subject.keywordPlus | BACTERIUM | - |
dc.subject.keywordPlus | COMMUNITY | - |
dc.subject.keywordPlus | NUTRIENT | - |
dc.subject.keywordAuthor | Biofilm reactor | - |
dc.subject.keywordAuthor | Denitrification | - |
dc.subject.keywordAuthor | Eutrophication | - |
dc.subject.keywordAuthor | Nitrification | - |
dc.subject.keywordAuthor | Surface water | - |
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