3D Printed Feed Channel Spacers for Spiral Wound Membrane Module
Reverse Osmosis (RO) technology is confronted with challenges associated with high energy requirement. Optimization of feed spacer is necessary to reduce the cost and energy demand of the RO process, but the spacer designs are restricted by geometrical constraints.
This project aims to develop prototypes of novel spacer for spiral wound module (SWM) via additive manufacturing with higher degree of freedom, with complex geometries that maximise mass transfer, minimise pressure drop and fouling.
- Achieved 34% of lower colloidal fouling rate compared to the normal spacer (i.e., nearly no Si was fouled on 3D-printed spacer SWM with 97.7% lower Si amount)
- Achieved 47% of lower biofouling rate compared to the normal spacer (i.e., 41% lower organic deposits, 62% lower extracellular polymeric substances, and 90% lower bacteria cells deposition)
- Comparable performance of permeability and salt rejection with conventional spacer SWM
- Filed a Technology Disclosure with title of “3D printing of large scale sheet-like models beyond build volume of printer” to overcome build size limitation
Mr. Marc Lee email@example.com