TWCA 2017 Annual Conference

1. Extracting Minerals From Water
UPDATE ON THE EL PASO FULL RECOVERY
DESALINATION PLANT
March 2017

2. INTRODUCTION TO EWM
 Enviro Water Minerals Company (EWM) has created a
revolutionary desalination solution that extracts the dissolved
solids contained in a variety of salty water sources for beneficial
use:
– Waste brine contains marketable minerals, which EWM extracts
to sell
– Full resource recovery (what we call Full Recovery Desalination)
 Coupling of revenue from mineral sales and sale of potable water
makes business model feasible
 Intellectual Property – Patent portfolio of 12 process patents
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3. REINVENTING DESALINATION
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Example Sources Example Production
Full Recovery Desalination
 All contaminants separated into
mineral products (zero discharge)
 Water yield = ~99%
 Is often cheapest new water
supply option available
Seawater
Produced Water
Brackish Water Potable Water
Milk of Magnesia
High-Purity Salt
Agricultural Gypsum Caustic Solution
Potash Liquid
Fertilizer
Bromide Rich Brine

4. EPW BACKGROUND
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El Paso’s Kay Bailey Hutchison desalination plant
✓ El Paso is the site of the world's
largest inland desalination plant.
✓ A joint project of El Paso Water and
Ft. Bliss, El Paso's desalination
facilities produces 27.5 (MGD)
✓ Kay Bailey Hutchison plant began
operations in 2007
✓ Current waste brine disposal is deep
well injection – 22 miles away

5. EWM COMMERCIALIZATION
■ EWM successfully competed for the right and then completed
piloting at El Paso and at equipment testing facilities
■ EWM successfully completed pilot for SAWS brine
■ Have had commercial discussions with several additional
interested communities.
■ We are optimistic that we can help many other communities and
would love to engage in conversations with those who believe our
solution could help them.
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EWM is building its first full-scale plant in El Paso, Texas

6. FIRST SITE: EL PASO
Benefits to El Paso include:
 Enhanced yield from existing
desalinization plant (effectively
99%)
 Avoided concentrate disposal
issues
 Preservation of brackish water
aquifer life
EWM’s first project in El Paso will commence commercial operations in Spring 2017
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7. EWM AND EPWU
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El Paso Water
Utilities
KBH Desal Plant
Enviro Water
Minerals
Potable Quality Water
Concentrate

8. Chlorine
Disinfection, Blending and Distribution
Potable Water to El Paso
99% well water recovery
with full brine flow to EWM
Waste Brine to
Disposal Wells
Potable
Water
BWRO DesalinationBrackish Wells
BWRO Brine 13,000 mg/l dissolved salts
Air+CO2
Air
Desalinated Water
93% Recovery (Basis Brine Feed)
700 mg/l dissolved salts
Magnesium Chloride,
Calcium Chloride Brine
To Mineral Production
Calcium Sulfate Brine
To Mineral Production
Sodium Chloride Brine
To Mineral Production
HCl Caustic
SoftenerHeater
Hot Water
100 F
Soft
Sulfate and
Bicarbonate
Free Brine
Low Hardness
Sulfate Free
Brine
Nano-Filtration Electrodialysis
* NSF 60 certified acid provides additional product water and silica desaturation
Dilute Acid* from
Mineral Production
80% recovery
90% recovery
EXISTING EPWU KAY BAILEY HUTCHISON DESALINATION PLANT
ENVIRO WATER MINERALS EL PASO PLANT
85% recovery
EWM El Paso Plant
14% recovery
Degasifier
125% flow
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9. EWM PRODUCTION
 Produce ~2.1 mgd potable-quality water from 1 mgd of raw
brackish water + 1.25 mgd concentrate
 Influent raw brackish water TDS: 2,500 mg/L
 Influent concentrate TDS: 13,000 mg/L
 Products:
 Potable-Quality Water (TDS<700 mg/L)
 Caustic Soda (50% Concentration)
 Hydrochloric Acid (35% Concentration)
 Gypsum (high purity, 100% Soluble)
 Magnesium Hydroxide (98% Purity, 56% Solid)
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10. CONSTRUCTION UPDATE
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 Broke Ground January 2016
 Commence commercial operations: Spring 2017

11. SITE PICS: NANO FILTRATION / RO
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12. SITE PICS: SETTLING
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13. SITE PICS: ELECTRODIALYSIS
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14. SITE PICS: ION EXCHANGE
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15. OUTSIDE EQUIPMENT
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6.5 MW Natural Gas CHP Degassifier
Cooling Towers Evaporator

16. DESALINATION REINVENTED
 All contaminants are separated into
mineral products (zero discharge)
 Water yield = ~99%
 Preserves finite aquifer resources
 Avoids disposal issues
 Often is cheapest new water supply
option available
 Low CO2 footprint
 12 Patents / patents pending
EWM’s Full Recovery Desalination makes beneficial use of contaminants, eliminating costly
and environmentally hazardous disposal issue
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2017
Innovative
Water Supply
Award
Winner of the Texas Water
Development Board’s
2017 Innovative Water
Supply Award for the
Technology Category