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 DepartmentWater Desalination and Reuse Research Center (WDRC)
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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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