Effect of internal recycling ratios on biomass parameters and simultaneous reduction of nitrogen and organic matter in a hybrid treatment system

Nguyen, DD; Ngo, HH; Yoon, YS

Effect of internal recycling ratios on biomass parameters and simultaneous reduction of nitrogen and organic matter in a hybrid treatment system

Nguyen, DD Ngo, HH

Yoon, YS

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Publication Type:: Journal Article
Citation:: Ecological Engineering, 2016, 89 pp. 24 - 31
Issue Date:: 2016-04-01

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Field	Value	Language
dc.contributor.author	Nguyen, DD	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Yoon, YS	en_US
dc.date.available	2020-05-25T19:05:56Z
dc.date.issued	2016-04-01	en_US
dc.identifier.citation	Ecological Engineering, 2016, 89 pp. 24 - 31	en_US
dc.identifier.issn	0925-8574	en_US
dc.identifier.uri	http://hdl.handle.net/10453/61385
dc.description.abstract	© 2016 Elsevier B.V. A new large-scale pilot hybrid treatment system of 53 m3/day was developed by combining 3 treatment methods: switched internal recycling flows to equalization tank (EQ); rotating hanging media bioreactor (RHMBR); and submerged flat sheet membrane bioreactor (SMBR). The system was operated for more than 16 months in a real-world municipal wastewater treatment plant, using different internal recycling ratios and observing/monitoring the results. This paper addresses not only the urgent problems of treating nutrient and organic pollutants in municipal wastewater, but also assesses characteristics of biomass production, sludge yield, and observed yield during the pilot operation. It also details design parameters used to achieve these assessed levels. Furthermore, the effects and correlations of the loading rates, activated sludge and biomass parameters, on different runs were also studied. The purpose of this was to identify the most suitable indicator for assessing the hybrid system's performance. Results strongly indicated that increasing the internal circulation rate greatly influenced the declining yield trend. The lowest biomass production (Px,bio) and sludge yields (PX,VSS or PX,TSS) were shown for conditions in run 3, and run 4, respectively. Overall the developed treatment system performed extremely well in biological terms for actual municipal wastewater treatment and resulted in high pollutant removal efficiencies, reduced sludge production at a reasonable cost. The hybrid system is a potential option for wastewater treatment, reuse and economy.	en_US
dc.relation.ispartof	Ecological Engineering	en_US
dc.relation.isbasedon	10.1016/j.ecoleng.2015.11.054	en_US
dc.subject.classification	Environmental Engineering	en_US
dc.title	Effect of internal recycling ratios on biomass parameters and simultaneous reduction of nitrogen and organic matter in a hybrid treatment system	en_US
dc.type	Journal Article
utslib.citation.volume	89	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	04 Earth Sciences	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	89	en_US

Abstract:

© 2016 Elsevier B.V. A new large-scale pilot hybrid treatment system of 53 m3/day was developed by combining 3 treatment methods: switched internal recycling flows to equalization tank (EQ); rotating hanging media bioreactor (RHMBR); and submerged flat sheet membrane bioreactor (SMBR). The system was operated for more than 16 months in a real-world municipal wastewater treatment plant, using different internal recycling ratios and observing/monitoring the results. This paper addresses not only the urgent problems of treating nutrient and organic pollutants in municipal wastewater, but also assesses characteristics of biomass production, sludge yield, and observed yield during the pilot operation. It also details design parameters used to achieve these assessed levels. Furthermore, the effects and correlations of the loading rates, activated sludge and biomass parameters, on different runs were also studied. The purpose of this was to identify the most suitable indicator for assessing the hybrid system's performance. Results strongly indicated that increasing the internal circulation rate greatly influenced the declining yield trend. The lowest biomass production (Px,bio) and sludge yields (PX,VSS or PX,TSS) were shown for conditions in run 3, and run 4, respectively. Overall the developed treatment system performed extremely well in biological terms for actual municipal wastewater treatment and resulted in high pollutant removal efficiencies, reduced sludge production at a reasonable cost. The hybrid system is a potential option for wastewater treatment, reuse and economy.

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http://hdl.handle.net/10453/61385