Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorCao, Shenbinen_US
dc.contributor.authorDu, Ruien_US
dc.contributor.authorYan, Wangwangen_US
dc.contributor.authorZhou, Yanen_US
dc.identifier.citationCao, S., Du, R., Yan, W. & Zhou, Y. (2022). Mitigation of inhibitory effect of THP-AD centrate on partial nitritation and anammox: insights into ozone pretreatment. Journal of Hazardous Materials, 431, 128599-.
dc.description.abstractAnaerobic digestion centrate produced from thermal hydrolysis pretreated sludge (THP-AD centrate) has serious inhibitory effect on ammonium oxidizing bacteria (AOB) and anammox bacteria. This imposes huge challenge to employ partial nitritation/anammox (PN/A) process to treat THP-AD centrate. This study, for the first time, presented an effective strategy, ozone pretreatment, to alleviate such inhibitory effect. The activities of AOB and anammox bacteria increased with increasing ozone dosage, which were likely related to the transformation of organic compounds including humic acid-like and fulvic acid-like substances as well as high molecular weight (HMW) protein. Long-term operation of PN/A system further demonstrated the improved performance in term of nitrogen removal, organics degradation as well as sludge settleability and effluent solids. Nitrogen removal rate (NRR) of 0.64 Kg N/m3/d was achieved (1.38 g O3/ g COD), which was 42.2% higher compared to treating untreated THP-AD centrate. Effluent nitrate, the by-product of PN/A process, was reduced by 39.7% despite of its release in ozonation. This was due to the enhanced denitrification activity, humic acid-like and fulvic acid-like substances as well as HMW protein were significantly reduced. Overall, this study provides a promising method to improve PN/A performance and final effluent quality when treating organic-rich THP-AD centrate.en_US
dc.relation.ispartofJournal of Hazardous Materialsen_US
dc.rights© 2022 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleMitigation of inhibitory effect of THP-AD centrate on partial nitritation and anammox: insights into ozone pretreatmenten_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchAdvanced Environmental Biotechnology Centre (AEBC)en_US
dc.subject.keywordsPartial Nitritationen_US
dc.description.acknowledgementDr. Rui Du acknowledges the support of National Natural Science Foundation of China (NO. 22006003), Beijing Natural Science Foundation (NO. 8204056), China.en_US
item.fulltextNo Fulltext-
Appears in Collections:CEE Journal Articles
NEWRI Journal Articles

Citations 50

Updated on Jan 28, 2023

Web of ScienceTM
Citations 50

Updated on Jan 28, 2023

Page view(s)

Updated on Feb 4, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.