Chemically enhanced backwashing for NOM removal of ceramic ultrafiltration membranes using conventional cleaning chemicals with a surfactant
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Membrane filtration has developed into a robust water treatment step. However, limited research has been conducted on new membrane cleaning solutions. Conventional membrane cleaners such as NaOCl are known to form DBPs with organic matter and damage polymeric membranes at high concentrations. Our research examines the use of surfactant (SDS) in combination with conventional membrane cleaners (NaOCl and NaOH) to clean a ceramic UF membrane as chemically enhanced backwash (CEB). Existing research primarily looked at the combination of surfactants with NaOH for long duration cleaning. Limited research has also been conducted on the combination of surfactants with high NaOCl concentrations. Initial tests showed the addition of SDS significantly reduced the surface tension of various CEB solutions. Subsequent fouling and cleaning studies demonstrated better cleaning efficiency when CEB contained SDS. In general, the addition of SDS provided some improvement to backwash fouling control although more research is needed in this area.
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Copyright © 2022 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2022
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ninan-chemicallyenhancedbackwashingfornomremoval.pdf | 2023-05-05 | Public | Download |