Geospatial Analysis of the Big Spring, TX Area. Types of Wastewater Reuse Non-Potable Reuse Watering lawns Industrial cooling Indirect Potable Reuse Aquifer.

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Presentation transcript:

Geospatial Analysis of the Big Spring, TX Area

Types of Wastewater Reuse Non-Potable Reuse Watering lawns Industrial cooling Indirect Potable Reuse Aquifer recharge Reservoir augmentation Direct Potable Reuse Treated wastewater is reused as drinking water Generally considered a “last resort” Applied recently at Big Spring, TX (Raw Water Production Facility)

Project Background The Big Spring Raw Water Production Facility (RWPF) is owned/operated by the Colorado River Municipal Water District (CRMWD) Certain factors in the region influenced the direct potable reuse initiative

Region F

Region F – Elevations Using NED30m

Average Annual Evaporation for 2011

Average Annual Precipitation for 2011

Reservoir Capacity ( )

Energy Comparison and Benefit for Big Spring RWPF Water From Lake Spence 4.2 kWh/1000 gal to pump from Lake Spence 0.84 kWh/1000 gal to divert wastewater from Beals Creek Total: 5.04 kWh/1000 gal Big Spring RWPF Total: 5.34 kWh/1000 gal to produce water and pump it to the Spence pipeline Added Benefit: The Big Spring RWPF provides about 0.5 to 1.5 million gallons per day of reclaimed water

Conclusions The elevations and distance from the reservoirs makes withdraws energy intensive There is not much rainfall in the region, and evaporation losses are high The surface reservoirs have been depleted from years of drought and use Non-potable reuse and Indirect-potable reuse are not very feasible Direct potable reuse is the optimal choice for this region to help conserve valuable surface water resources

Questions?

Projected Demand from