1. OPTIMIZATION OF DIRECT CONTACT MEMBRANE DESALINATION WATER PURIFICATION SYSTEMS USING COMPUTATIONAL FLUID DYNAMIC ANALYSIS. Master’s Project First Progress Report Jeremiah Jones RPI Hartford Rensselaer Polytechnic Institute - Hartford

2. Modeling Approach These pictures show one of the meshing patterns which were used in the evaluation. Rensselaer Polytechnic Institute - Hartford Membrane Pass Model FE Meshing

3. Modeling Approach This picture shows the other meshing patterns which were used in the evaluation. Rensselaer Polytechnic Institute - Hartford Membrane Pass Model FE Meshing

4. Results Rensselaer Polytechnic Institute - Hartford Water Concentration Profile for v = 0.25 m/s, L = 0.1 m, h = 0.001 m, t = 0.0001 m, T c =293 K, T H =328 K, c c =c P =55000mol/m 3

5. Results Rensselaer Polytechnic Institute - Hartford Temperature Profile for v = 0.25 m/s, L = 0.1 m, h = 0.001 m, t = 0.0001 m, T c =293 K, T H =328 K, c c =c P =55000mol/m 3

6. Results Rensselaer Polytechnic Institute - Hartford

7. Results Rensselaer Polytechnic Institute - Hartford

8. Results Rensselaer Polytechnic Institute - Hartford

9. Results Rensselaer Polytechnic Institute - Hartford

10. Results Rensselaer Polytechnic Institute - Hartford Old Total Fluxes in Y-direction along Membrane Boundary Upper Boundary (between membrane and cold water) Lower Boundary (between membrane and hot water)

11. Results Rensselaer Polytechnic Institute - Hartford New Total Fluxes in Y-direction along Membrane Boundary Upper Boundary (between membrane and cold water) Lower Boundary (between membrane and hot water)

12. Future Work Rensselaer Polytechnic Institute - Hartford Evaluating cases where the concentrate and product inlet velocities were not equal to each other. Evaluating counter-current flow cases. Determining appropriate modeling conditions that would allow an increase of salt and seawater to permeate the membrane with an increase of membrane porosity. Modeling a three-dimensional desalination system and compare to the two-dimensional results obtained herein. The three-dimensional model could evaluate a rectangular channel and compare that to the results of a cylindrical model.

13. References 1. Chapman-Wilbert, Michelle. The Desalting and Water Treatment Membrane Manual: A Guide to Membranes for Municiple Water Treatment. DIBR. Denver: U.S. Department of the Interior; Bureau of Reclamation, 1993. 2. General Electric. Cross Flow Filtration Method Handbook. General Electric Company, 2014. 3. Degremont Technologies Ltd. Reverse Osmosis Skids. 2015. 18 February 2015.. 4. Gozalvez-Zafrilla, J. M. and Santafe-Moros, A. "Design of a Flat Membrane Module for Fouling and Permselectivity Studies." COMSOL Conference 2010. Paris: COMSOL, 2010. 7. 5. General Electric Water & Process Technologies. Point of Use Drinking Water Components. Milwaukee: General Electric Company, 2006. 6. GE Power & Water; Water & Process Technologies. Electrodialysis (ED) and Bipolar Electrodialysis (BPED). 2013. 23 April 2015. http://www.gewater.com/products/electrodialysis-ed-bipolar-bped.html http://www.gewater.com/products/electrodialysis-ed-bipolar-bped.html 7. Water King, "Water King's Genesis Reverse Osmosis System," 2012. 16 April 2015. http://www.waterkingwater.com/el_paso_reverse_osmosis.htm Rensselaer Polytechnic Institute - Hartford