Desalination Technology in the US – Potentials for …...Desalination Technology in the US –...
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Desalination Technology in the US – Potentials for Economic Growth and Sustainable Water Supply
Jad Ziolkowska1, Reuben Reyes2
1 Dept. of Geography and Environmental Sustainability 2 Oklahoma Climatological Survey
XVI World Water Congress
Cancun, Mexico May, 29 – June, 3, 2017
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What is desalination and why do we need it?
Desalination (desal) - process of removing salt particles and minerals from seawater or brackish groundwater
Water source Salinity TDS (mg/l) Seawater 15,000-50,000
Brackish water 1,500-15,000 River water 500-3,000 Pure water < 500
Source: Victoriadesalplants.com Source: AThirstyPlanet.com
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Degasifier
Cartridge Filters
RO Membrane
Array Blending By-Pass
To Distribution System
Treated Water Storage
Post-treatment Chemicals
Concentrate Disposal
Chemical Pre-treatment
BRACKISH WATER TREATMENT CONCENTRATE
MANAGEMENT AND DISPOSAL
DELIVERY OF POTABLE WATER
Energy Recovery Turbine
Well Field
Collection and Conveyance System
GROUNDWATER DEVELOPMENT
Micro Filtration
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Desalination treatment process
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MGD 1320
1057
792
528
264
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Global desalination market - costs and capacity
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Source: Gasson (2013)
MGD
3962
3170
2377
1585
792
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Global desalination market – water source
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
World US SaudiArabia
China UAE India Australia Chile Qatar Lybia Kuwait
brackish seawater other
Source: Author’s calculations based on DesalData.com (2013)
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18%
1%1%
73%
5%2%
Industry Irrigation MilitaryMunicipalities Power stations Tourist facilities
Source: GWI Desal data (2013)
Use of desalinated water in the world (2013)
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Desalination plant status (2013)
0
500
1000
1500
2000
2500
US Saudi Arabia Australia China Israel
MG
D
Online Construction Offline (mothballed) Offline (decomissioned) On hold Cancelled
Source: Author’s calculations based on DesalData.com (2013)
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New desalination plants & capacity - US, 1970-2013
Source: Author’s calculations based on DesalData.com (2013)
1
10
100
1000
1970 1980 1990 2000 2010
Freq
uenc
y Lo
g sc
ale
New plants per year MGD per year
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− Global water demand predicted to increase by 46% between 2000- 2050 (UN, 2014; OECD, 2012)
− In Oklahoma, water demand is projected to increase by 33.3% in the next 50 years (OCWP, 2012)
− Water resources (surface water, groundwater, reuse water) will decrease by 10% in next 50 yrs (TWRI, 2011)
− Drought in the US (significant pressure on water resources)
− Brackish/seawater desalination could buffer the shortage
− Many open questions and impediments (desalination siting and economics
Where are desalination plants located? 10
Need for desalination
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Research objective
− Develop interactive 5D and 6D geospatial models and a multi-dimensional analysis of desalination trends in the US
− Time span 1950-2013
− The models include a set of uniform variables for comparative analyses
Category Category variable
Plant capacity (MGD*)
4.31 <73.21; 1.80 < 4.31; 0.86 < 1.80; 0.50 < 0.86; 0.31 < 0.50; 0.20 < 0.31; 0.13 < 0.20; 0.08 < 0.13; 0.04 < 0.08; 0.00 < 0.04
Raw water type (TDS)
Brackish water or inland water (TDS** 3000 - <20000) Brine or concentrated seawater (TDS >50000) Pure water or tap water (TDS <500) River water or low concentrated saline water (TDS 500 - <3000) Seawater (TDS 20000 - 50000) Waste Water Unknown
User category
Demonstration Discharge Industry (TDS <10) Irrigation (TDS <1000) Military purposes (TSD 10 - <1000) Municipalities as drinking water (TDS 10 - <1000) Power stations (TDS <10) Tourist facilities as drinking water (TDS 10 - <1000) Water injection Unknown
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Graphical representation of the 6D model
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Methods and data
− Data set from Desaldata.com by the Global Water Intelligence (GWI, 2013) - 2,749 data entries for the US in 2013
− Data cleaning 1,600 plants in the US with complete record specified for the models
− Google Fusion tables and Google Earth used for geocoding (lat long) with the Keyhole Markup Language (KML) applied in virtual globes
− C++ computing language used to create a 3D analysis space
− 6D model 5D model + a function of three additional categories (plant status, raw water type, final user) that are a category in itself
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Model access
Model website with explanation:
http://www.hitechmex.org/US_desal/US_desal.html
Open access model of desalination plants in the US:
http://www.hitechmex.org/US_desal/US_Desal.kmz
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5D map of desalination plants in the US based on desalination capacity
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5D view of desalination plants in the Los Angeles area based on the end consumer of desalinated water
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5D map of desalination plants in the US based on the plant status category
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Conclusions
− The models can be used as an educational and research tool to better analyze, present, and display water issues and developments of the desalination sector in the US
− Geographical and spatio-temporal data analysis can help with designing policies and measures at the regional and national scale
− Results can be viewed in ESRI ArcGIS, ArcGIS Explorer, ArcGIS Earth, NASA World Wind, Google Maps, Google Earth, Google Earth Pro, Chrome Google Earth Web, and CesiumGS
− Models can be used on any computer system: Windows, Linux, Apple, and on smartphones: iPhone, iPad or Android
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References
Gasson, C. (2013): Desalination market update. Fourth Quarter Assessment. Water desalination report 2013
GWI (Global Water Intelligence) (2013): Market profile and desalination markets, 2009–2012 yearbooks and US desalination plants inventory. GWI: Oxford
Ziolkowska, J.R., Reyes, R. (2016): Geospatial Analysis of Desalination in the US - An Interactive Tool for Socio-Economic Evaluations and Decision Support. Applied Geography 71: 115-122
Ziolkowska, J.R.; Reyes, R. (2016): Geological and Hydrological Visualization Models for Digital Earth Representation. Computers & Geosciences 94: 31-39
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New book on water resources edited by
Dr. Jad Ziolkowska & Dr. Jeff Peterson
International perspective on water scarcity problems and useful management methods and best practices in the US and Europe
KEY FEATURES • Provides a national and regional
perspective through the use of country specific case study examples
• Includes a comparative analysis between the US and Europe, illustrating experiences in water management from two sides of the Atlantic
• Covers interdisciplinary topics related to water, such as agriculture and energy