Fate of NDMA precursors through an MBR-NF pilot plant for urban wastewater reclamation and the effect of changing aeration conditions
dc.contributor.author
dc.date.accessioned
2016-07-26T07:42:49Z
dc.date.available
2016-07-26T07:42:49Z
dc.date.issued
2016-10-01
dc.identifier.issn
0043-1354
dc.identifier.uri
dc.description.abstract
The removal of N-nitrosodimethylamine (NDMA) formation potential through a membrane bioreactor (MBR) coupled to a nanofiltration (NF) pilot plant that treats urban wastewater is investigated. The results are compared to the fate of the individual NDMA precursors detected: azithromycin, citalopram, erythromycin, clarithromycin, ranitidine, venlafaxine and its metabolite o-desmethylvenlafaxine. Specifically, the effect of dissolved oxygen in the aerobic chamber of the MBR pilot plant on the removal of NDMA formation potential (FP) and individual precursors is studied. During normal aerobic operation, implying a fully nitrifying system, the MBR was able to reduce NDMA precursors above 94%, however this removal percentage was reduced to values as low as 72% when changing the conditions to minimize nitrification. Removal decreased also for azithromycin (68–59%), citalopram (31–17%), venlafaxine (35–15%) and erythromycin (61–16%) on average during nitrifying versus non-nitrifying conditions. The removal of clarithromycin, o-desmethylvenlafaxine and ranitidine could not be correlated with the nitrification inhibition, as it varied greatly during the experiment time. The MBR pilot plant is coupled to a nanofiltration (NF) system and the results on the rejection of both, NDMA FP and individual precursors, through this system was above 90%. Finally, results obtained for the MBR pilot plant are compared to the percentage of removal by a conventional full scale biological wastewater treatment plant (WWTP) fed with the same influent. During aerobic operation, the removal of NDMA FP by the MBR pilot plant was similar to the full scale WWTP
dc.description.sponsorship
This study was funded by the Spanish MINECO funded project WaterFate (CTM2012-38314-C02-01). Dr. Maria Jos e Farr e acknowledges the European Commission for funding project 623711 under the FP7-PEOPLE-2013-IIF - Marie Curie Action: “International Incoming Fellowships”. Mr Julian Mamo acknowledges the funding received from the People Program (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7/ 2007e2013, under REA agreement 289193 (SANITAS project)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.relation
MINECO/PN 2012-2015/CTM2012-38314-C0201
dc.relation.isformatof
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.watres.2016.06.057
dc.relation.ispartof
© Water Research, 2016, vol. 102, p. 383-393
dc.relation.ispartofseries
Articles publicats (D-EQATA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Fate of NDMA precursors through an MBR-NF pilot plant for urban wastewater reclamation and the effect of changing aeration conditions
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.relation.projectID
info:eu-repo/grantAgreement/EC/FP7/623711/EU/Assessment of nitrogen containing disinfection by-products and their precursors in drinking waters of the Mediterranean Basin/N-DBPS
info:eu-repo/grantAgreement/EC/FP7/289193/EU/Sustainable and integrated urban water system management/SANITAS
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
025406
dc.contributor.funder
dc.identifier.eissn
1879-2448