Water Desalination in Texas INDEPENDENT WATER AND SEWER COMPANIES - PowerPoint PPT Presentation

Water Desalination in Texas INDEPENDENT WATER AND SEWER COMPANIES OF TEXAS, INC. Jorge A Arroyo, PE Innovative Water Technologies May 10, 2013

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Source water salinity in existing desal facilities 14 12 10 Number of Facilities 8 6 4 2 0 <1000 1001-1500 1501-2000 2001-2500 2501-3000 >3000 Not Responded Source water salinity in milligrams/liter

Types and frequency of concentrate disposal methods 35% 30% 25% 20% 15% 10% 5% 0% Disposal Well Surface Water Body Sanitary Sewer Land Evaporation Zero Discharge Application/Irrigation

Water Supplies Existing water supplies — the amount of water that can be produced with current permits, current contracts, and existing infrastructure during drought — are projected to decrease about 10 percent , from about 17.0 million acre-feet in 2010 to about 15.3 million acre-feet in 2060.

Future Water Supplies 2012 State Water Plan 70% 60% 50% 40% 30% 20% 10% 0% Conservation Conventional Alternative Municipal Conservation Irrigation Conservation Other Conservation Existing Surface Water Groundwater New Major Reservoirs Conjunctive Use Reuse Desalination

Why brackish groundwater desalination in Texas? 9

#1 Abundance 10

Brackish Groundwater Manual For Texas Regional Water Planning Groups Planning Groups 11

#2 A new source 12

#3 Broad geographic availability 13

Brackish Planning Region Groundwater Volume [Acre-feet] Brackish A- Panhandle 19,099,600 Groundwater B- Region B 14,535,000 Manual C- Region C 84,948,900 For Texas D- Northeast Texas 55,783,300 Regional Water E- Far West Texas 125,382,400 Planning Groups F- Region F 372,848,300 G- Brazos 195,540,400 H- Region H 193,382,500 I- East Texas 195,869,400 J- Plateau 8,637,800 K- Lower Colorado 201,952,200 L- South Central Texas 417,767,200 M- Rio Grande 396,068,900 N- Coastal Bend 332,408,800 O- Llano Estacado 91,762,800 P- Lavaca 7,825,900 Total 2,713,813,400 14

#4 Water supply diversification 15

#5 Ease of implementation 16

#6 Robust technology 17

#7 Scalability 18

#8 Local or regional approaches 19

#9 Reuse multiplier 20

#10 Challenges to Opportunities 21

http://www.twdb.state.tx.us/innovativewat er/ • Desalination CONTACT 22