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http://dx.doi.org/10.11001/jksww.2018.32.4.301

Prevention of membrane fouling by roughing filter for the stand-alone MD process  

Yun, Taekgeun (Green City Technology Institute, Korea Instiute of Science and Technology)
Jeong, Seongpil (Green City Technology Institute, Korea Instiute of Science and Technology)
Kim, Hyewon (Green City Technology Institute, Korea Instiute of Science and Technology)
Hong, Seungkwan (KU-KIST GreenSchool, Graduate School of Energy and Environment, Korea University)
Lee, Seockheon (Green City Technology Institute, Korea Instiute of Science and Technology)
Publication Information
Journal of Korean Society of Water and Wastewater / v.32, no.4, 2018 , pp. 301-307 More about this Journal
Abstract
Membrane distillation (MD) is a thermally driven desalination process with a hydrophobic membrane. MD process has been known to have a lower fouling potential compared to other pressure-based membrane desalination process (NF, RO). However, membrane fouling also occurs in MD process. In this study, the membrane fouling was observed in MD process according to the pre-treatment processes. The filtration and precipitation processes were applied as the pre-treatment to prevent the membrane fouling. The pore sizes of roughing filters were 0.4, 5, 10, 30, and $60{\mu}m$. The concentration of the coagulant was 1.2 mg/L as $FeCl_3$. The membrane fouling on MD membrane was successfully removed with both pre-treatment processes.
Keywords
Membrane distillation; Membrane fouling; Pre-treatment; Seawater desalination;
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