Factors governing the pre-concentration of wastewater using forward osmosis for subsequent resource recovery

Ansari, AJ; Hai, FI; Guo, W; Ngo, HH; Price, WE; Nghiem, LD

Factors governing the pre-concentration of wastewater using forward osmosis for subsequent resource recovery

Ansari, AJ Hai, FI Guo, W

Ngo, HH

Price, WE Nghiem, LD

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Publication Type:: Journal Article
Citation:: Science of the Total Environment, 2016, 566-567 pp. 559 - 566
Issue Date:: 2016-01-01

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Field	Value	Language
dc.contributor.author	Ansari, AJ	en_US
dc.contributor.author	Hai, FI	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Price, WE	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2020-05-25T19:06:35Z
dc.date.issued	2016-01-01	en_US
dc.identifier.citation	Science of the Total Environment, 2016, 566-567 pp. 559 - 566	en_US
dc.identifier.issn	0048-9697	en_US
dc.identifier.uri	http://hdl.handle.net/10453/52848
dc.description.abstract	© 2016 This study demonstrated a technique using forward osmosis (FO) to pre-concentrate the organic matter in raw wastewater, thereby transforming low strength wastewater into an anaerobically digestible solution. The chemical oxygen demand (COD) of raw wastewater was concentrated up to approximately eightfold at a water recovery of 90%. Thus, even low strength wastewater could be pre-concentrated by FO to the range suitable for biogas production via anaerobic treatment. Excessive salinity accumulation in pre-concentrated wastewater was successfully mitigated by adopting ionic organic draw solutes, namely, sodium acetate, and EDTA-2Na. These two draw solutes are also expected to benefit the digestibility of the pre-concentrated wastewater compared to the commonly used draw solute sodium chloride. Significant membrane fouling was observed when operating at 90% water recovery using raw wastewater. Nevertheless, membrane fouling was reversible and was effectively controlled by optimising the hydrodynamic conditions of the cross-flow FO system.	en_US
dc.relation.ispartof	Science of the Total Environment	en_US
dc.relation.isbasedon	10.1016/j.scitotenv.2016.05.139	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Waste Disposal, Fluid	en_US
dc.subject.mesh	Osmosis	en_US
dc.subject.mesh	Salinity	en_US
dc.subject.mesh	Biological Oxygen Demand Analysis	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Factors governing the pre-concentration of wastewater using forward osmosis for subsequent resource recovery	en_US
dc.type	Journal Article
utslib.citation.volume	566-567	en_US
utslib.for	090409 Wastewater Treatment Processes	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	566-567	en_US

Abstract:

© 2016 This study demonstrated a technique using forward osmosis (FO) to pre-concentrate the organic matter in raw wastewater, thereby transforming low strength wastewater into an anaerobically digestible solution. The chemical oxygen demand (COD) of raw wastewater was concentrated up to approximately eightfold at a water recovery of 90%. Thus, even low strength wastewater could be pre-concentrated by FO to the range suitable for biogas production via anaerobic treatment. Excessive salinity accumulation in pre-concentrated wastewater was successfully mitigated by adopting ionic organic draw solutes, namely, sodium acetate, and EDTA-2Na. These two draw solutes are also expected to benefit the digestibility of the pre-concentrated wastewater compared to the commonly used draw solute sodium chloride. Significant membrane fouling was observed when operating at 90% water recovery using raw wastewater. Nevertheless, membrane fouling was reversible and was effectively controlled by optimising the hydrodynamic conditions of the cross-flow FO system.

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http://hdl.handle.net/10453/52848