Transcript Performance Based Business Screening

Water Purification
Presentation to Emerging Technologies Committee
US Chamber of Commerce
October 2007
Ian Barbour
General Manager
Dow Water Solutions
“When the well is dry, we learn the worth of water.”
Benjamin Franklin
DOW CONFIDENTIAL - Do not share without permission
Freshwater statistics
• 75% of the world’s surface is
water
• Only 3% of all water on earth
is fresh water
 2/3 icecaps/glaciers
 1/3 ground/surface water
• 41% of the Earth’s population
(2.3 billion) live in waterstressed areas; 3.5 billion by
2025
• 1.2 billion people live without
clean, piped water (WHO)
• 2.5 billion live without basic
sanitation
• 10 million die annually from
waterborne disease
DOW CONFIDENTIAL - Do not share without permission
“If we could produce fresh water from salt water at a
low cost, that would indeed be a great service to
humanity, and would dwarf any other scientific
accomplishment.”
John F. Kennedy, 1962
35th President of the United States
DOW CONFIDENTIAL - Do not share without permission
Cost of producing potable water
US$/m3
US$/kgal US$/acre-ft
$2.43 $9.20 $3,000
$2.03 $7.67 $2,500
$1.62 $6.14 $2,000
$1.21 $4.60
$1,500
$0.81 $3.07
$1,000
$0.40 $1.53
$500
$0
1980
1990
2000
Used with permission of the Affordable Desalination Coalition
DOW CONFIDENTIAL - Do not share without permission
2001
Israel
2002
Singapore
5
Affordable desalination
330,000 cubic meters per day – 82 Olympic sized swimming pools
Ashkelon, Israel
DOW CONFIDENTIAL - Do not share without permission
6
Filtration spectrum
Ionic Range
Molecular Range
Angstrom Units (Log Scale)
1
10
Macro Molecular Range
100
Micro Particle Range
Macro Particle Range
104
1000
106
105
Latex / Emulsions
Metal Ions
Endotoxins/Pyrogens
Bacteria
Colloids
Insecticide
s
Soluble Salts
Viruses
Algae
Dissolved Organics
Human Hair
Giardia
Antibiotics
Crypto
Microfiltration
Reverse Osmosis
IX
Nanofiltration
Electrodeionization
0.001
0.0001
Micrometers (Log Scale)
Particle Filtration
Ultrafiltration
0.01
0.1
1.0
DOW CONFIDENTIAL - Do not share without permission
100
10
7
Membrane technologies
Reverse osmosis (RO) membranes will remove most
dissolved organic and inorganic salts and compounds,
pathogens, virus etc.
Nanofiltration (NF) membranes can be used to
selectively remove organics such as color and pesticides
whilst allowing some passage of desirable inorganic salts
(Mery sur Oise)
Ultrafiltration (UF) and Microfiltration (MF) membranes
can be used to remove particles, cryptospiridium, higher
molecular weight organics
Any of the above can be used in series or in parallel
DOW CONFIDENTIAL - Do not share without permission
8
Large UF system
DOW CONFIDENTIAL - Do not share without permission
9
Rest of the system
Reverse Osmosis
Electro-deionization
DOW CONFIDENTIAL - Do not share without permission
10
Waste water recovery
• Location: Singapore
• Purpose: Supply low
cost, high-grade
industrial water from
tertiary-treated waste
water
• Comparative
Performance: 86%
recovery of waste
water in Singapore
is now an industry
benchmark
DOW CONFIDENTIAL - Do not share without permission
11
DOW CONFIDENTIAL - Do not share without permission
12
On-going Activities to Reduce Costs
Polishing
Filter
Cartridge
Filter
Coagulant FeCl3
Draw Back
Tank
RO Unit
Disinfection
Distribution
SBS
Chlorine
MMF
Lime
pH
Adjust
High
Pressure
Pump
Intake Pond
Filtered
Water Tank
Energy Recovery
Device (ERD)
Intake System
Pretreatment System
RO System
Post-treatment
Beach Well
MF/UF
High Efficiency ERD
Infiltration Intake
Submerged MF/UF
High Flow or Thicker Spacer RO Elements
Intermittent Chlorination
DAF
High Recovery RO System (Single Stage or BCS)
Co-location Power Station
Bio-filter
Large Diameter RO Elements
Mix BW with SW
Boron Resin
NF - NF or NF - RO Hybrid
ERD: Energy Recovery Devices DAF: Dissolved Air Flotation
BCS: Brine Conversion System
DOW CONFIDENTIAL - Do not share without permission
13
Challenges and Solutions
Increasing energy costs
Environmental footprint
Global warming – greenhouse gas emissions from fossil fuel
power plants
Brine concentrate management
Sustainable energy (wind, solar)
Zero liquid discharge technologies
Conservation and re-use
DOW CONFIDENTIAL - Do not share without permission
14
Membrane Technologies
Are increasingly used in locations that have access to
sources of saline, polluted or other non potable water
Are used in industrialized regions to raise water quality
to public demands
Are used in large centralized plants, small community
plants and in individual homes
Will enable wide spread use of waste water recycling
Are used in emergency relief where normal supplies are
compromised
RO can be co-located with power plants to provide “base
load” where load factors vary
Are used to re-charge depleted aquifers to provide
storage and strategic reserves
DOW CONFIDENTIAL - Do not share without permission
15
Dow Water Solutions
ADSORBSIA™ Arsenic Removal Media
DOWEX™ Ion Exchange Resins
FILMTEC™ Membranes
OMEXELL™ Electrodeionization
OMEXELL™ Ultrafiltration
www.dowwatersolutions.com
DOW CONFIDENTIAL - Do not share without permission
16
USCHAMBER.COM
Senior Leaders Meeting
- June 2007
DOW CONFIDENTIAL - Do not
share without permission
17