JTS SafGen UV-OX Chlorine Dioxide Generator. Background Chlorine dioxide has been used for over 100...
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Transcript of JTS SafGen UV-OX Chlorine Dioxide Generator. Background Chlorine dioxide has been used for over 100...
JTS SafGen UV-OXJTS SafGen UV-OX
Chlorine Dioxide GeneratorChlorine Dioxide Generator
BackgroundBackground
• Chlorine dioxide has been used for over 100 Chlorine dioxide has been used for over 100 years. It is more selective than chlorine or years. It is more selective than chlorine or bromines and remains effective at low bromines and remains effective at low concentrations. Chlorine dioxide is a wide concentrations. Chlorine dioxide is a wide spectrum biocide, effective over a broad pH spectrum biocide, effective over a broad pH range, and is a superior product for the range, and is a superior product for the control of Legionella.control of Legionella.
• Chlorine dioxide penetrates the bacterial cell Chlorine dioxide penetrates the bacterial cell wall and reacts with amino acids to kill the wall and reacts with amino acids to kill the organism.organism.
Chlorine Dioxide vs. ChlorineChlorine Dioxide vs. Chlorine
range of 8.0-8.5. At pH 6.0, chlorine hydrolyzesto hypochlorous acid (HOCI), which is its effec-tive form. At a pH of 8.5, only 8% goes to HOCI,thus requiring a much higher dosage to control algae and slime. Chlorine dioxide retains efficacyover a wide pH range and provides superior biocide control at a fraction of the chlorine dosage. The
smaller dosage makes chlorine dioxide more cost effective.
Chlorine dioxide excels in ammoniated systems and where process leaks create high demands for chlorine. Chlorine dioxide does not react with ammonia and is more selective in its reactivity, thus minimizing the dosage and the possible formation of chlorinated organics in the blowdown.
Chlorine Dioxide – Physical Chlorine Dioxide – Physical PropertiesProperties
• Chemical Formula = ClOChemical Formula = ClO22
• Does not react w/ waterDoes not react w/ water
• A true dissolved gas in solutionA true dissolved gas in solution
• 2.5 times the oxidizing capacity of 2.5 times the oxidizing capacity of ChlorineChlorine
• A strong oxidizerA strong oxidizer
• A potent microbiocideA potent microbiocide
• Must be generated at point of useMust be generated at point of use
Chlorine Dioxide Benefits
• Selective disinfecting oxidant • Rapid kill rate at low ppm• Broad-range bacteria, fungi & virus destruction • Penetrates & sluffs biofilm, killing resident organisms • Does not form trihalomethanes (THM’s)• Does not react with ammonia or chlorinated organics• Does not form hypochlorous acid or free chlorine • Is less corrosive than chlorine • Oxidizes manganese, iron, phenols, sulfides, cyanides
• Able to oxidize odor-causing substances• Remains effective across broad pH range
Why Isn’t Chlorine Dioxide More Widely Used?
Federal law prohibits the transportation of chlorine dioxide gas, therefore it must be produced at the point of use. Large-scale water treatment systems use complex and expensive acid-based chlorine dioxide generators. Typically, these methods require multiple hazardous
precursors. Chlorine dioxide historically has been considered a viable option when the amount of water requiring treatment warranted the expense, danger, complexity and maintenance concerns of a large-scale generator.
Chlorine Dioxide – Other Methods
2 ClO2 + 2NaCl2NaClO2 + Cl2
Sodium Chlorite plus Chlorine
2NaClO2 + NaOCl + 2HCl 2ClO2 + 3NaCl + H2O
5NaClO2 + 4HCl 4ClO2 + 5NaCl +2H2O
Bleach plus Hydrochloric Acid
In Summary…
• Has to be generated on-site
• 2-3 chemical precursors required
• Complicated, expensive feed equipment
• Dangerous to produce
• Current systems are highly corrosive
• Labor-intensive and high-maintenance costs
• Requires qualified manpower - 24/7 monitoring
• No effective systems for under 2 lbs./day
Finally….Finally…. The SafGen Chlorine Dioxide Generator
overcomes the barriers of:
HazardExpense
MaintenanceComplexity
Size
SafGen Chlorine Dioxide GeneratorSafGen Chlorine Dioxide Generator
The SafGen UV-OX generator safely produces a direct feed, dilute aqueous
chlorine dioxide solution using ultraviolet energy in reaction w/ sodium chlorite.
JTS SafGen UV-OX Chlorine Dioxide- Our Way
NaClO2 ClO2 + Na+UV Light
JTS SafGen Features SafGen Features
• Single Chemical Precursor
• Safe generation using UV light
• Adjustable Dosage Settings
• Feed Range – up to 2 lbs./day
• “No Flow – No Feed” Design
RX
CARTRIDGE
Balla
st
NaClO2
Drum
Pump
Timer
ELECtrlB
alla
st
Outlet
ShutoffValve
Inlet
Filter
Rotameter
SolenoidValve
JTS SafGen – JTS SafGen – BenefitsBenefits
• Easily integrated into your current treatment program
• Effective elimination of biofilm
• Safe concentrations of chlorine dioxide
• Can function as-needed, according to demand
• Single chemical precursor
• No acid, no bleach, no chlorine gas
• Less corrosive than other generation systems • Generation process does not affect pH levels
• Small footprint, self-contained weather resistant cabinet
• Straight-forward installation
• Easily maintained by building engineer or service provider
Riverway Cooling Tower
Villa D’Este Cooling Tower
Villa D’Este Before Chlorine Dioxide
Villa D’Este Chlorine DioxideBefore After
Biocidal Control BenefitsBiocidal Control Benefits
Uncontrolled growth of microorganisms can lead to:
higher water and energy costsshortened equipment lifeincreased health risks
Biofilm can:impede heat transfer and water flow
serve as site for scale formationpromote under-deposit corrosion
prevent function of scale and corrosion inhibitorssequester infectious bacteria such as Legionella
SafGen Operation Conditions for more than 1.0 lbs/day chlorine
dioxide
• The water flow rate should be set to 60 gph
• The proportional pump is preset at the factory to feed +/- 435 ppm sodium chlorite (1,740 ppm of Sodium chlorite solution)
• The reactor will produce 1.6 lbs/day of chlorine dioxide
SafGen Operation Conditions for less than 1.0 lbs/day chlorine
dioxide• Reset the proportional pump to feed +/-
270 ppm sodium chlorite (1,080 ppm of Sodium chlorite solution)
• The water flow rate should be set to 70 gph
• The reactor will produce 1.2 lbs/day of chlorine dioxide
Lbs of Chlorine Dioxide/Ton of Refrigeration
0.000
0.200
0.400
0.600
0.800
1.000
1.200
1.400
1.600
1.800
2.000
0 500 1000 1500 2000 2500 3000 3500 4000
Refrigeration Tons/Day
Lb
s/D
ay C
hlo
rin
e D
ioxi
de
150% of normal demand. Summer operation.
50% of normal demand. Winter operation
$'s/day of Sodium Chlorite/Ton of Refrigeration
$0.00
$2.00
$4.00
$6.00
$8.00
$10.00
$12.00
$14.00
$16.00
$18.00
$20.00
0 500 1000 1500 2000 2500 3000 3500 4000
Refrigeration Tons/Day
$'s/
day
of S
odiu
m C
hlor
ite
150% of normal demand. Summer operation.
50% of normal demand. Winter operation.
JTS SafGen UV-OX JTS SafGen UV-OX Applications
• Commercial Cooling Towers
• Legionella Contaminated Systems
• Decorative/Ornamental Fountains
• Odor control – hydrogen sulfide, organo-sulfur
• Destruction of phenols and mercaptans
• Color removal and bleaching
• Surface disinfection
Phone: 713-621-6740Fax: 713-621-2454
e-mail: [email protected]
JTS SafGen UV-OX SafGen UV-OXPatent Pending and
© JTS Enterprises, Inc. 2004Patent Protection
The process and apparatus described in this presentation is protected by US and foreign patent applications. The owners of the disclosed technology will use all means, including injunctions and the levying of damages, to prevent any unauthorized use of the disclosed
technology
JTS Enterprises, Inc.4600 Post Oak Place Suite 153
Houston, Texas 77027
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