Membrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potential

Handle URI:
http://hdl.handle.net/10754/621893
Title:
Membrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potential
Authors:
Naidu, Gayathri; Jeong, Sanghyun; Choi, Youngkwon; Vigneswaran, Saravanamuthu
Abstract:
Membrane distillation (MD) was evaluated as a treatment option of wastewater reverse osmosis concentrate (WWROC) discharged from wastewater reclamation plants (WRPs). A direct contact MD (DCMD), at obtaining 85% water recovery of WWROC showed only 13–15% flux decline and produced good quality permeate (10–15 µS/cm, 99% ion rejection) at moderate feed temperature of 55 °C. Prevalent calcium carbonate (CaCO3) deposition on the MD membrane occurred in treating WWROC at elevated concentrations. The combination of low salinity and loose CaCO3 adhesion on the membrane did not significantly contribute to DCMD flux decline. Meanwhile, high organic content in WWROC (58–60 mg/L) resulted in a significant membrane hydrophobicity reduction (70% lower water contact angle than virgin membrane) attributed to low molecular weight organic adhesion onto the MD membrane. Granular activated carbon (GAC) pretreatment helped in reducing organic contents of WWROC by 46–50%, and adsorbed a range of hydrophobic and hydrophilic micropollutants. This ensured high quality water production by MD (micropollutants-free) and enhanced its reuse potential. The MD concentrated WWROC was suitable for selective ion precipitation, promising a near zero liquid discharge in WRPs.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC)
Citation:
Naidu G, Jeong S, Choi Y, Vigneswaran S (2016) Membrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potential. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.11.068.
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
29-Nov-2016
DOI:
10.1016/j.memsci.2016.11.068
Type:
Article
ISSN:
0376-7388
Sponsors:
This study was funded by the Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE) (Sustainable process for treatment of WWROC to achieve near zero liquid discharge). We acknowledge Sydney Olympic Park Authority (Dr. Andrzej Listowski) (WWROC sampling) and the team at University of New South Wales (Dr. James McDonald) (provision of HPLC analytical support).
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0376738816310031
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorNaidu, Gayathrien
dc.contributor.authorJeong, Sanghyunen
dc.contributor.authorChoi, Youngkwonen
dc.contributor.authorVigneswaran, Saravanamuthuen
dc.date.accessioned2016-11-29T08:47:43Z-
dc.date.available2016-11-29T08:47:43Z-
dc.date.issued2016-11-29en
dc.identifier.citationNaidu G, Jeong S, Choi Y, Vigneswaran S (2016) Membrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potential. Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2016.11.068.en
dc.identifier.issn0376-7388en
dc.identifier.doi10.1016/j.memsci.2016.11.068en
dc.identifier.urihttp://hdl.handle.net/10754/621893-
dc.description.abstractMembrane distillation (MD) was evaluated as a treatment option of wastewater reverse osmosis concentrate (WWROC) discharged from wastewater reclamation plants (WRPs). A direct contact MD (DCMD), at obtaining 85% water recovery of WWROC showed only 13–15% flux decline and produced good quality permeate (10–15 µS/cm, 99% ion rejection) at moderate feed temperature of 55 °C. Prevalent calcium carbonate (CaCO3) deposition on the MD membrane occurred in treating WWROC at elevated concentrations. The combination of low salinity and loose CaCO3 adhesion on the membrane did not significantly contribute to DCMD flux decline. Meanwhile, high organic content in WWROC (58–60 mg/L) resulted in a significant membrane hydrophobicity reduction (70% lower water contact angle than virgin membrane) attributed to low molecular weight organic adhesion onto the MD membrane. Granular activated carbon (GAC) pretreatment helped in reducing organic contents of WWROC by 46–50%, and adsorbed a range of hydrophobic and hydrophilic micropollutants. This ensured high quality water production by MD (micropollutants-free) and enhanced its reuse potential. The MD concentrated WWROC was suitable for selective ion precipitation, promising a near zero liquid discharge in WRPs.en
dc.description.sponsorshipThis study was funded by the Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE) (Sustainable process for treatment of WWROC to achieve near zero liquid discharge). We acknowledge Sydney Olympic Park Authority (Dr. Andrzej Listowski) (WWROC sampling) and the team at University of New South Wales (Dr. James McDonald) (provision of HPLC analytical support).en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0376738816310031en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Membrane Science, 29 November 2016. DOI: 10.1016/j.memsci.2016.11.068en
dc.subjectDirect contact membrane distillationen
dc.subjectmicropollutantsen
dc.subjectorganic foulingen
dc.subjectpretreatmenten
dc.subjectreverse osmosis concentrateen
dc.subjectwastewater reclamationen
dc.titleMembrane distillation for wastewater reverse osmosis concentrate treatment with water reuse potentialen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
dc.contributor.institutionFaculty of Engineering, University of Technology Sydney (US, P.O. Box 123, Broadway, NSW2007, Australiaen
kaust.authorJeong, Sanghyunen
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