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: 104636.1204@compuserve.com

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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