Spacer geometry and particle deposition in spiral wound membrane feed channels
van Steen, M.S.H.
Vrouwenvelder, Johannes S.
van Loosdrecht, Mark C.M.
KAUST DepartmentEnvironmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Permanent link to this recordhttp://hdl.handle.net/10754/594108
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AbstractDeposition of microspheres mimicking bacterial cells was studied experimentally and with a numerical model in feed spacer membrane channels, as used in spiral wound nanofiltration (NF) and reverse osmosis (RO) membrane systems. In-situ microscopic observations in membrane fouling simulators revealed formation of specific particle deposition patterns for different diamond and ladder feed spacer orientations. A three-dimensional numerical model combining fluid flow with a Lagrangian approach for particle trajectory calculations could describe very well the in-situ observations on particle deposition in flow cells. Feed spacer geometry, positioning and cross-flow velocity sensitively influenced the particle transport and deposition patterns. The deposition patterns were not influenced by permeate production. This combined experimental-modeling approach could be used for feed spacer geometry optimization studies for reduced (bio)fouling. © 2014 Elsevier Ltd.
CitationRadu AI, van Steen MSH, Vrouwenvelder JS, van Loosdrecht MCM, Picioreanu C (2014) Spacer geometry and particle deposition in spiral wound membrane feed channels. Water Research 64: 160–176. Available: http://dx.doi.org/10.1016/j.watres.2014.06.040.
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