Evaluation of a full-scale suspended sludge deammonification technology coupled with an hydrocyclone to treat thermal hydrolysis dewatering liquors

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dc.contributor.authorOchs, Pascal
dc.contributor.authorMartin, Benjamin D.
dc.contributor.authorGermain, Eve
dc.contributor.authorWu, Zhuoying
dc.contributor.authorLee, Po-Heng
dc.contributor.authorStephenson, Tom
dc.contributor.authorvan Loosdrecht, Mark C. M.
dc.contributor.authorSoares, Ana
dc.date.accessioned2021-02-25T10:34:21Z
dc.date.available2021-02-25T10:34:21Z
dc.date.issued2021-02-01
dc.description.abstractSuspended sludge deammonification technologies are frequently applied for sidestream ammonia removal from dewatering liquors resulting from a thermal hydrolysis anaerobic digestion (THP/AD) process. This study aimed at optimizing the operation, evaluate the performance and stability of a full-scale suspended sludge continuous stirred tank reactor (S-CSTR) with a hydrocyclone for anaerobic ammonia oxidizing bacteria (AMX) biomass separation. The S-CSTR operated at a range of nitrogen loading rates of 0.08–0.39 kg N m−3 d−1 displaying nitrogen removal efficiencies of 75–89%. The hydrocyclone was responsible for retaining 56–83% of the AMX biomass and the washout of ammonia oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) was two times greater than AMX. The solid retention time (SRT) impacted on NOB washout, that ranged from 0.02–0.07 d−1. Additionally, it was demonstrated that an SRT of 11–13 d was adequate to wash-out NOB. Microbiome analysis revealed a higher AMX abundance (Candidatus scalindua) in the reactor through the action of the hydrocyclone. Overall, this study established the optimal operational envelope for deammonification from THP/AD dewatering liquors and the role of the hydrocyclone towards maintaining AMX in the S-CSTR and hence obtain process stability.en_UK
dc.identifier.citationOchs P, Martin BD, Germain E, et al., (2021) Evaluation of a full-scale suspended sludge deammonification technology coupled with an hydrocyclone to treat thermal hydrolysis dewatering liquors. Processes, Volume 9, Issue 2, February 2021, Article number 278en_UK
dc.identifier.issn2227-9717
dc.identifier.urihttps://doi.org/10.3390/pr9020278
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16402
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectpartial nitritation/anammoxen_UK
dc.subjecthydrocycloneen_UK
dc.subjectsidestreamen_UK
dc.subjectthermal hydrolysis processen_UK
dc.subjectdeammonificationen_UK
dc.titleEvaluation of a full-scale suspended sludge deammonification technology coupled with an hydrocyclone to treat thermal hydrolysis dewatering liquorsen_UK
dc.typeArticleen_UK

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