Show simple item record

dc.contributor.authorHeitz, Anna
dc.contributor.authorSalehi, S.
dc.contributor.authorCheng, K.
dc.contributor.authorGinige, M.
dc.date.accessioned2019-06-10T02:36:45Z
dc.date.available2019-06-10T02:36:45Z
dc.date.issued2019
dc.identifier.citationSalehi, S. and Cheng, K.Y. and Heitz, A. and Ginige, M.P. 2019. Simultaneous nitrification, denitrification and phosphorus recovery (SNDPr) - An opportunity to facilitate full-scale recovery of phosphorus from municipal wastewater. Journal of Environmental Management. 238: pp. 41-48.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/75725
dc.identifier.doi10.1016/j.jenvman.2019.02.063
dc.description.abstract

Sewage treatment plants are a potential point source for recycling of phosphorus (P). Several technologies have been proposed to biologically recover P from wastewater. The majority of these technologies are side-stream processes and rely on an external source of soluble organic carbon to facilitate P recovery. To date, no studies have demonstrated the potential to facilitate main-stream recovery of P, using carbon that is naturally present in wastewater. Simultaneous nitrification, denitrification and phosphorus removal (SNDPR) is an elegant process that can uptake influent carbon and effectively remove both nitrogen (N) and P from wastewater. SNDPR studies to date, however, have failed to facilitate an end-of-anaerobic-phase P rich liquor, that enables economies of scale to recover influent P. Therefore, this study examined the feasibility of achieving a P rich liquor (e.g. > 70 mg-P/L) in a granular SNDPR process. A synthetic influent that replicated the nutrient and carbon concentrations of municipal wastewater was used to investigate whether carbon in the influent wastewater could enable both nutrient removal and P recovery from wastewater. Our granular SNDPR process was able to facilitate an end-of-anaerobic-phase liquor with P enriched to approximately 100 mg-P/L. A dissolved oxygen (DO) concentration of 0.5 mg/L in a sequencing batch reactor (SBR) was found to be essential to achieve complete nutrient removal and a high P concentration at the end of the anaerobic phase. At this steady state of reactor operation, the abundance of polyphosphate accumulating organisms (PAOs) was 2.6 times the abundance of glycogen accumulating organisms (GAOs). The study also demonstrated the importance of denitrifying polyphosphate accumulating organisms (DPAOs) and glycogen accumulating organisms (DGAOs) to achieve complete removal of N from the effluent. Compared to nitrifying bacteria, the polyphosphate accumulating organisms (PAOs) had a higher affinity towards DO. This study, for the first time, showed that the mainstream recovery of P is feasible using a SNDPR process.

dc.languageEnglish
dc.publisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
dc.subjectScience & Technology
dc.subjectLife Sciences & Biomedicine
dc.subjectEnvironmental Sciences
dc.subjectEnvironmental Sciences & Ecology
dc.subjectPhosphorus recovery
dc.subjectPolyphosphate accumulating organisms (PAOs)
dc.subjectDenitrifying polyphosphate accumulating organisms (DPAOs)
dc.subjectSimultaneous nitrification denitrification and phosphorus removal (SNDPR)
dc.subjectOXYGEN SIMULTANEOUS NITRIFICATION
dc.subjectNITROUS-OXIDE EMISSION
dc.subjectENDOGENOUS DENITRIFICATION
dc.subjectNUTRIENTS REMOVAL
dc.subjectSLUDGE
dc.subjectBACTERIA
dc.subjectCOMPETITION
dc.subjectCOMMUNITY
dc.subjectSTRUVITE
dc.subjectIMPACT
dc.titleSimultaneous nitrification, denitrification and phosphorus recovery (SNDPr) - An opportunity to facilitate full-scale recovery of phosphorus from municipal wastewater
dc.typeJournal Article
dcterms.source.volume238
dcterms.source.startPage41
dcterms.source.endPage48
dcterms.source.issn0301-4797
dcterms.source.titleJournal of Environmental Management
dc.date.updated2019-06-10T02:36:42Z
curtin.departmentSchool of Civil and Mechanical Engineering
curtin.accessStatusFulltext not available
curtin.contributor.orcidHeitz, Anna [0000-0002-3161-9194]
dcterms.source.eissn1095-8630
curtin.contributor.scopusauthoridSalehi, S [57201067304]
curtin.contributor.scopusauthoridCheng, KY [56590201900]
curtin.contributor.scopusauthoridGinige, MP [10046629700]
curtin.contributor.scopusauthoridHeitz, Anna [7006759075]
dc.date.embargoEnd2021-03-04


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record