Emerging investigator series: Capacitive Deionization for ...
NEW TECHNOLOGIES & BREAKTHROUGHS TO OLD … · NEW TECHNOLOGIES & BREAKTHROUGHS TO OLD DEIONIZATION...
Transcript of NEW TECHNOLOGIES & BREAKTHROUGHS TO OLD … · NEW TECHNOLOGIES & BREAKTHROUGHS TO OLD DEIONIZATION...
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NEW TECHNOLOGIES & BREAKTHROUGHS TO OLD DEIONIZATION APPLICATIONSBy: Jim Wark, [email protected]
STS AIChE March 2018 Monthly Dinner Meeting – Workshop
Thursday, March 1, 2018, 5:30pm-6:30pm CST
The Bougainvilleas, Houston, TX 77077, United States
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EQUIPMENT EXAMPLES
SECTION
Basic water treatment methodologies
•Softeners
•Carbon
•Ultraviolet (UV) treatment
•Filtration
•Reverse Osmosis (RO)
•Deionization (DI)
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TOTAL DISSOLVED SOLIDS (TDS)
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CONDUCTIVIY VS RESISTIVITY
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CONDUCTANCE
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Demi Cabinet
Table – Conductance, Resistance and Dissolved Solids
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PH
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TOTAL HARDNESS
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CALCIUM
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MAGNESIUM
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ALKALINITY
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NITRATE
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CHLORINE AND CHLORINATION
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ORTHOPHOSPHATE
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SILICA
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IRON
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COPPER
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MOLYBDENUM
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KEY INDUSTRIES
SERVED BY D.I.
• Energy
• Oil & gas
• Chemical
• Food & beverage
• Industrial
• Pharma and Ultrapure
• Electronics and Plating
operations
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TOLYLTRIAZOLE
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MONO SODIUM NITRATE
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advanced membrane technologies
that address the most demanding water challenges
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FRACTIONAL ELECTRODEIONIZATION MODULES
• Dual voltage process
• Higher hardness tolerance in feed water
• Quick startup
• Reduced cleaning
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FRACTIONAL ELECTRODEIONIZATION MODULES
Covered By Three Differentiating Patents:
•US Patent # 6,896,814 B2 for “Fractional
Electrodeionization Process” (May 24, 2005)
•US Patent # 7,163,964 B2 for “Method
of Preparing Ion Exchange Media“
(Jan 16, 2007)
•US Patent # 9,095,822 B2 for “Split Flow EDI
Apparatus for Treating Second Pass RO
Permeate Water with High Flow Rate”
(Aug 4, 2015)
•CE Certified
•UL Certified
•FDA Certified for FEDI Rx
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EDI OR ELECTRODEIONIZATION
Combines Electrodialysis & Ion
Exchange
•Combination process
→Ion exchange resin media
→Ion selective membrane
•Electric current used to
→Move ions uni-directionally
across membrane
→Regenerate resin
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KEY EDI ADVANTAGES VS. MIXED BED
• No Regeneration Chemicals
• No storage or handling of toxic chemicals
• Safe operation
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TECHNICAL SPECS
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EDI VS. FEDI
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FEDI® - DIFFERENTIATED
SEPARATION TECHNOLOGY
•Advanced two stage process
•Designed to fractionate &
separate
•Creates ideal conditions for
removal
- Strong & weekly ionized
impurities
- Using varying electrical
driving force
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FEDI® TWO-STAGE PROCESS
Hardness Removal Zonee
• Low electrical driving force
• Strongly ionized impurities
removed
• - (Ca++, Mg++, Na+, SO4- -, Cl -)
• Reject pH acidic, eliminates
scaling
• Prepares weekly ionized
impurities for Stage 2 removal
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FEDI® TWO-STAGE PROCESS
•Silica Removal Zone
• Higher electrical driving force
• Creates water splitting
– - Results in highly regenerated
resin
– - Results in alkaline reject pH
• Balance monovalent & weakly
ionized impurities removed
(Silica, Boron, CO2)
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ADVANTAGES OF TWO-STAGE SEPARATION
•Two distinct voltage and pH operating zones
•Working zone to take primary load
→High hardness tolerance due to low pH
•Regenerated zone for polishing mode
→ Ideal condition for silica removal at high pH
→High removal of ionic TOC
• Optimized power consumption
• Low voltage for primary load
• Higher voltage for secondary load / polishing
• Better control for process optimization
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FEDI APPLICATIONSPower and Oil & Gas Industries
• Power and Oil & Gas Industries– Demineralized water with conductivity < 0.1 - <1.0 microS/cm
- Reactive Silica < 10 / < 20 ppb
- Sodium (Na): <5 ppb, Chloride <3 ppb
• Pharmaceutical Industry - High purity product water < 1.0 MicroS/cm
• Semiconductor/ Microelectronics Industries- Ultrapure product water > 16 Megaohm.cm or better
• Industrial Water- High purity product water
•Replacement of existing Mixed Bed Polisher with FEDI®
after RO system
•Replacement/Retrofits of Other EDI based system with FEDI®
•Condensate polishing (Ambient Temperature)
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FEDI SYSTEM
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FEDI DV BLOCK DIAGRAM
COST EFFECTIVE AT ALL
FLOW RATES
•Cost-Competitive With
Primary Mixed Beds
•Cost-Competitive At All Flow
Rates
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CASE STUDY: ELECTRIC GENERATION FACILITYPower and Oil & Gas I
• Commissioned in 2010, still running very well after 6 years of
performance
• FEDI Dual Voltage stacks – 2 trains of 165 gpm.
FEDI stacks treating Single pass RO water to produce less than
0.07µS/cm Conductivity and less than 10ppb Silica
Feed water characteristics Product water characteristics
Silica up to 70ppb Silica less than 10ppb
Inlet cond up to 6 to 7µS/cm Prod cond less than 0.07µS/cm
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CASE STUDY: ELECTRIC GENERATION FACILITY
• Despite rises in inlet silica, consistent removal to below 10 ppb
0
10
20
30
40
50
60
70
January Feb March April May June July August September October November
Silic
a (p
pb
)
Silica Reduction Over One Year of Operation
Inlet Silica (ppb) Outlet Silica (ppb)
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CONDUCTIVITY PERFORMANCE FOR ONE YEAR
• Conductivity consistently below 0.1 µS/cm, despite spikes
0.000
0.050
0.100
0.150
0.200
0.250
0.300
0.350
0.400
0.450
0.500
0.00
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11
16
21
26
31
36
41
46
51
56
61
66
71
76
81
86
91
96
10
1
10
6
11
1
11
6
12
1
12
6
13
1
13
6
14
1
14
6
15
1
15
6
16
1
16
6
17
1
17
6
18
1
18
6
19
1
19
6
20
1
20
6
Pro
du
ct C
on
du
ctiv
ity
Inle
t C
on
du
ctiv
ity
One Year of Operation (Days)
Inlet Conductivity ms/cm Product cond ms/cm
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Demi Cabinet
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RO Cabinet
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Large RO Skid
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RO Skid Process Diagram
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QUESTION & ANSWER SECTION