STUDY ON STRATEGIES TO REDUCE MEMBRANE SCALING AND FOULING IN DRINKING WATER AND WATER REUSE MEMBRANE SYSTEMS

Persistent Link:
http://hdl.handle.net/10150/145465
Title:
STUDY ON STRATEGIES TO REDUCE MEMBRANE SCALING AND FOULING IN DRINKING WATER AND WATER REUSE MEMBRANE SYSTEMS
Author:
Yan, Dongxu
Issue Date:
2011
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Central Arizona Project (CAP) water was treated using the process of slowsand filtration, chemical pretreatment and RO membrane. Both bench scale plate and frame reactor and pilot scale tests suggested RO membrane fouling by clay and organic matter with minor scaling by CaCO3 and BaSO4. Several strategies were studied to reduce RO membrane fouling and scaling. The first is choosing optimized operation conditions through bench scale tests. The second is to modify the traditional concentration polarization model for a better fouling/scaling prediction. This modified model was also used to optimize concentrate spacer design, which leads to reduced concentration polarization index. The third is to develop a method for anti-scalant test and comparison, which can be used for anti-scalant selection and dose optimization.Additional to these strategies, pre-oxidation pretreatment for RO membrane in water reuse application was investigated at bench and pilot scale. In the MBR-Ozone-RO train study, ozone showed certain impact on RO membrane fouling, but no significant difference was made on membrane cleaning frequency. UV and UV/AOP impacts on RO membrane fouling tests were done on plate and frame reactor. UV did not show any competency to reduce membrane fouling, while UV/AOP tests showed promising results by reducing RO membrane fouling rate by 50%.
Type:
Electronic Dissertation; text; text
Keywords:
fouling; membrane system; reduce; scaling
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Environmental Engineering
Degree Grantor:
University of Arizona
Advisor:
Arnold, Robert G.; Ela, Wendell P.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleSTUDY ON STRATEGIES TO REDUCE MEMBRANE SCALING AND FOULING IN DRINKING WATER AND WATER REUSE MEMBRANE SYSTEMSen_US
dc.creatorYan, Dongxuen_US
dc.contributor.authorYan, Dongxuen_US
dc.date.issued2011-
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractCentral Arizona Project (CAP) water was treated using the process of slowsand filtration, chemical pretreatment and RO membrane. Both bench scale plate and frame reactor and pilot scale tests suggested RO membrane fouling by clay and organic matter with minor scaling by CaCO3 and BaSO4. Several strategies were studied to reduce RO membrane fouling and scaling. The first is choosing optimized operation conditions through bench scale tests. The second is to modify the traditional concentration polarization model for a better fouling/scaling prediction. This modified model was also used to optimize concentrate spacer design, which leads to reduced concentration polarization index. The third is to develop a method for anti-scalant test and comparison, which can be used for anti-scalant selection and dose optimization.Additional to these strategies, pre-oxidation pretreatment for RO membrane in water reuse application was investigated at bench and pilot scale. In the MBR-Ozone-RO train study, ozone showed certain impact on RO membrane fouling, but no significant difference was made on membrane cleaning frequency. UV and UV/AOP impacts on RO membrane fouling tests were done on plate and frame reactor. UV did not show any competency to reduce membrane fouling, while UV/AOP tests showed promising results by reducing RO membrane fouling rate by 50%.en_US
dc.typeElectronic Dissertationen_US
dc.typetexten_US
dc.typetexten_US
dc.subjectfoulingen_US
dc.subjectmembrane systemen_US
dc.subjectreduceen_US
dc.subjectscalingen_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.disciplineEnvironmental Engineeringen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorArnold, Robert G.en_US
dc.contributor.advisorEla, Wendell P.en_US
dc.contributor.committeememberMeixner, Thomasen_US
dc.contributor.committeememberSaez, Eduardo V.en_US
dc.identifier.proquest11565-
dc.identifier.oclc752261429-
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