El Paso Public Service Board: Pilot Study to Demonstrate Volume Reduction of Reverse Osmosis Concentrate

Project Summary

Research completed by the University of Texas at El Paso (UTEP) Civil Engineering Department is encouraging for concentrate recovery. At the new desalination plant, El Paso Water Utilities (EPWU) will commence large-scale testing to evaluate the silica reduction in reverse osmosis concentrate, using lime addition and vibratory shear enhanced processing (VSEP) technology.

TWDB Contract Manager:
Jorge Arroyo, P.E.
Funding Recipients:
El Paso Water Utilities - Public Service Board
Project Administrator:
John Balliew, P.E.
Dr. Anthony J. Tarquin, University of Texas at El Paso
Project Start Date:
October 2007
Project Completion Date:
May 2011
Total Project Cost:
TWDB Share of Project Cost:
The pilot study will demonstrate increased recovery of water from RO concentrate, which will result in greater water production in brackish groundwater desalination, and would reduce the quantity of concentrate for disposal to injection wells.

Project Details


Project Sponsor:

Texas Water Development Board
Jorge Arroyo - Contract Manager
1700 N. Congress Avenue
Austin, TX 78711

Funding Recipient:

El Paso Public Service Board
Ed Archuleta
President and CEO
1154 Hawkins Blvd.
P.O. Box 511
El Paso, TX 79961-0001

Project Manager:

El Paso Public Service Board
John Balliew
1154 Hawkins Blvd.
P.O. Box 511
El Paso, TX 79961-0001

Project Milestones

Event Date
Announcement of Request for Statement of Interest in Texas Register September 29, 2006
Statement of Interest received by TWDB January 25, 2007
Study approved by TWDB Board February 27, 2007
Contract executed October 15, 2007

Progress Reports

Final Reports


Courtesy of Dr. Hari J. Krishna, TWDB