Please use this identifier to cite or link to this item:
https://doi.org/10.3390/w12082234
DC Field | Value | |
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dc.title | Nitrogen removal for liquid-ammonia mercerization wastewater via partial nitritation/anammox based on zeolite sequencing batch reactor | |
dc.contributor.author | Zheng, L. | |
dc.contributor.author | Chen, Y. | |
dc.contributor.author | Zhou, S. | |
dc.contributor.author | Chen, Y. | |
dc.contributor.author | Wang, X. | |
dc.contributor.author | Wang, X. | |
dc.contributor.author | Zhang, L. | |
dc.contributor.author | Chen, Z. | |
dc.date.accessioned | 2021-08-18T04:39:53Z | |
dc.date.available | 2021-08-18T04:39:53Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Zheng, L., Chen, Y., Zhou, S., Chen, Y., Wang, X., Wang, X., Zhang, L., Chen, Z. (2020). Nitrogen removal for liquid-ammonia mercerization wastewater via partial nitritation/anammox based on zeolite sequencing batch reactor. Water (Switzerland) 12 (8) : 2234. ScholarBank@NUS Repository. https://doi.org/10.3390/w12082234 | |
dc.identifier.issn | 20734441 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/197749 | |
dc.description.abstract | Liquid-ammonia mercerization is commonly used to enhance the quality of cotton fabric in the textile industry, resulting in a large amount of liquid-ammonia mercerization wastewater (LMWW) containing high concentration of ammonia to be disposed of. This study proposes a partial nitritation/anammox (PN/A) process based on stable nitritation by a zeolite sequencing batch reactor (ZSBR) for the nitrogen removal of LMWW. The ZSBR could quickly achieve stably full nitritation with a nitrite accumulation ratio higher than 97% and an ammonia removal rate of 0.86 kg Nm-3d-1 for the raw LMWW with an ammonia level of 1490 mg/L. In order to avoid anammox inhibition by free nitrous acid, the ZSBR was successfully changed to PN operation with dilutedLMWWfor effluent meeting anammox requirements. The next anammox reactor (an up-flow blanket filter (UBF) realized a total nitrogen removal efficiency of 70.0% with a NLR (nitrogen loading rate) of 0.82 kg Nm-3d-1 for LMWW. High-throughput sequencing analysis results indicated that Nitrosomonas and Candidatus Kuenenia were the dominant bacteria in ZSBR and UBF, respectively. All results revealed that the PN/A process based on ZSBR as the PN pretreatment process was feasible for LMWW, facilitating cost-effective and low-carbon nitrogen removal for LMWW treatment in the textile industry in the future. © 2020 by the authors. | |
dc.publisher | MDPI AG | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
dc.source | Scopus OA2020 | |
dc.subject | Anammox | |
dc.subject | Liquid-ammonia mercerization wastewater | |
dc.subject | Nitritation | |
dc.subject | SBR | |
dc.subject | Zeolite | |
dc.type | Article | |
dc.contributor.department | CHEMICAL & BIOMOLECULAR ENGINEERING | |
dc.description.doi | 10.3390/w12082234 | |
dc.description.sourcetitle | Water (Switzerland) | |
dc.description.volume | 12 | |
dc.description.issue | 8 | |
dc.description.page | 2234 | |
Appears in Collections: | Students Publications |
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