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Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes, Jeremy Walker
Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes, Jeremy Walker
Wayne State University Dissertations
ABSTRACT
ANALYSIS OF MICROMIXERS TO MINIMIZE SCALING EFFECTS ON REVERSE OSMOSIS MEMBRANES
by
Jeremy Walker
December 2018
Advisor: Dr. Shawn McElmurry
Major: Civil Engineering
Degree: Doctor of Philosophy
Structural elements, typically mesh spacers, are required between membrane leaves in spiral
wound elements to ensure flow through reverse osmosis (RO) modules. The standard diamond-shaped
mesh spacer results in non-ideal hydrodynamics that can lead to fouling, which ultimately reduces the
flux of water through the membrane and the operational life of the unit. Additionally, traditional mesh
feed spacers do not allow for reverse flow cleaning due to obstructed flow paths and, once …