Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process

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dc.contributor.authorWu, Di
dc.contributor.authorEkama, George A
dc.contributor.authorWang, Hai-Guang
dc.contributor.authorWei, Li
dc.contributor.authorLu, Hui
dc.contributor.authorChui, Ho-Kwong
dc.contributor.authorLiu, Wen-Tso
dc.contributor.authorBrdjanovic, Damir
dc.contributor.authorvan Loosdrecht, Mark C M
dc.contributor.authorChen, Guang-Hao
dc.date.accessioned2018-03-26T11:54:51Z
dc.date.available2018-03-26T11:54:51Z
dc.date.issued2014
dc.date.updated2016-01-20T13:38:28Z
dc.description.abstractHong Kong has practiced seawater toilet flushing since 1958, saving 750,000 m3 of freshwater every day. A high sulfate-to-COD ratio (>1.25 mg SO42−/mg COD) in the saline sewage resulting from this practice has enabled us to develop the Sulfate reduction, Autotrophic denitrification and Nitrification Integrated (SANI®) process with minimal sludge production and oxygen demand. Recently, the SANI® process has been expanded to include Enhanced Biological Phosphorus Removal (EBPR) in an alternating anaerobic/limited-oxygen (LOS-EBPR) aerobic sequencing batch reactor (SBR). This paper presents further development – an anaerobic/anoxic denitrifying sulfur cycle-associated EBPR, named as DS-EBPR, bioprocess in an alternating anaerobic/anoxic SBR for simultaneous removal of organics, nitrogen and phosphorus. The 211 day SBR operation confirmed the sulfur cycle-associated biological phosphorus uptake utilizing nitrate as electron acceptor. This new bioprocess cannot only reduce operation time but also enhance volumetric loading of SBR compared with the LOS-EBPR. The DS-EBPR process performed well at high temperatures of 30 °C and a high salinity of 20% seawater. A synergistic relationship may exist between sulfur cycle and biological phosphorus removal as the optimal ratio of P-release to SO42−-reduction is close to 1.0 mg P/mg S. There were no conventional PAOs in the sludge.
dc.identifierhttp://dx.doi.org/10.1016/j.watres.2013.11.029
dc.identifier.apacitationWu, D., Ekama, G. A., Wang, H., Wei, L., Lu, H., Chui, H., ... Chen, G. (2014). Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process. <i>Water Research</i>, http://hdl.handle.net/11427/27717en_ZA
dc.identifier.chicagocitationWu, Di, George A Ekama, Hai-Guang Wang, Li Wei, Hui Lu, Ho-Kwong Chui, Wen-Tso Liu, Damir Brdjanovic, Mark C M van Loosdrecht, and Guang-Hao Chen "Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process." <i>Water Research</i> (2014) http://hdl.handle.net/11427/27717en_ZA
dc.identifier.citationWu, D., Ekama, G. A., Wang, H., Wei, L., Lu, H., Chui, H., . . . Chen, G. (2014). Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated Enhanced Biological Phosphorus Removal (EBPR) process. Water Research, 49, 251-264. doi:10.1016/j.watres.2013.11.029
dc.identifier.ris TY - Journal Article AU - Wu, Di AU - Ekama, George A AU - Wang, Hai-Guang AU - Wei, Li AU - Lu, Hui AU - Chui, Ho-Kwong AU - Liu, Wen-Tso AU - Brdjanovic, Damir AU - van Loosdrecht, Mark C M AU - Chen, Guang-Hao AB - Hong Kong has practiced seawater toilet flushing since 1958, saving 750,000 m3 of freshwater every day. A high sulfate-to-COD ratio (>1.25 mg SO42−/mg COD) in the saline sewage resulting from this practice has enabled us to develop the Sulfate reduction, Autotrophic denitrification and Nitrification Integrated (SANI®) process with minimal sludge production and oxygen demand. Recently, the SANI® process has been expanded to include Enhanced Biological Phosphorus Removal (EBPR) in an alternating anaerobic/limited-oxygen (LOS-EBPR) aerobic sequencing batch reactor (SBR). This paper presents further development – an anaerobic/anoxic denitrifying sulfur cycle-associated EBPR, named as DS-EBPR, bioprocess in an alternating anaerobic/anoxic SBR for simultaneous removal of organics, nitrogen and phosphorus. The 211 day SBR operation confirmed the sulfur cycle-associated biological phosphorus uptake utilizing nitrate as electron acceptor. This new bioprocess cannot only reduce operation time but also enhance volumetric loading of SBR compared with the LOS-EBPR. The DS-EBPR process performed well at high temperatures of 30 °C and a high salinity of 20% seawater. A synergistic relationship may exist between sulfur cycle and biological phosphorus removal as the optimal ratio of P-release to SO42−-reduction is close to 1.0 mg P/mg S. There were no conventional PAOs in the sludge. DA - 2014 DB - OpenUCT DP - University of Cape Town J1 - Water Research LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process TI - Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process UR - http://hdl.handle.net/11427/27717 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/27717
dc.identifier.vancouvercitationWu D, Ekama GA, Wang H, Wei L, Lu H, Chui H, et al. Simultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process. Water Research. 2014; http://hdl.handle.net/11427/27717.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Civil Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.sourceWater Research
dc.source.urihttp://www.journals.elsevier.com/water-research
dc.subject.otherSulfur cycle
dc.subject.otherEnhanced biological phosphorus removal
dc.subject.otherDenitrification
dc.subject.otherSaline sewage
dc.subject.otherWarm temperature
dc.titleSimultaneous nitrogen and phosphorus removal in the sulfur cycle-associated enhanced biological phosphorus removal (EBPR) process
dc.typeJournal Article
uct.type.filetypeText
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