Biotek OZONE vs. CHLORINE: Disinfection Effectiveness

ozone Disinfection Effectiveness test

Biotek OZONATED WATER HAND WASH REPORT from Dokkyo Medical University, Japan


HAND WASH REPORT test

SGS TEST Biotek OZONATED WATER DISINFECTION REPORT


  Test Item 0sec 5sec 15sec Reduction(%)
Antimicrobial
Effectiveness
Testing
Staphylococcus aureus (CFU/ml)
Escherichia Coli (CFU/ml)
Salmonella (CFU/ml)
Pseudomonas aeruginosa (CFU/ml)
Candida albicans (CFU/ml)
MRSA (CFU/ml)
5.4x105
2.5x105
1.7x105
4.5x105
1.3x105
1.3x105
Not Detected
6.1x10
1.9x10
Not Detected
Not Detected
Not Detected
Not Detected
< 10
Not Detected
Not Detected
Not Detected
Not Detected
>99.999
  99.99
  99.9
>99.999
>99.999
>99.999
Decomposition
of Residual Pesticide
Mevinphos
Permethrin
0.642
0.559
0.000
0.0337
100
94
 
Total
Residual Chlorine
Tap Water (mg/L)
O3 Water (mg/L)  
0.10 0.02 80
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CT VALUES

According to research, the effectiveness of a chemical to inactivate a microorganism (bacteria or virus) based on hemical concentration and contact time can be epresented as its "CT" value: where C is the concentration of the hemical dissolved in water (ppm) and T is its continuous contact time with the microorganism. It expresses the effect of the chemical concentration and time interaction needed to inactivate the microorganism.  
US EPA CT Values (ppm*min)
for Virus Inactivation by Ozone
Temperature ℃
Inactivation
<1
5
10
15
20
25
2-log 0.9 0.6 0.5 0.3 0.25 0.15
3-log 1.4 0.9 0.8 0.5 0.4 0.25
4-log 1.8 1.2 1.0 0.6 0.5 0.3
     
CT Values (ppm*min) For 99.9% Inactivation
of Giardia and 99.99% Virus
Data for 5℃


Free Chlorine Chloramine
Chlorine Dioxide Ozone
pH
  pH 6~7 pH 8~9 pH 6~7 6~7
Giardia 122 2,200 26.0 1.9
Virus 8 1,988 33.4 1.2
Taken from: "Optimizing Water Treatment Plant Performance Using Composite Correction Program." prepared by Process Applications, Inc., for the U.S. EPA, Office of Drinking Water, Cincinnati, Ohio.
 
Ct values (mg.min/L) for inactivation of
Cryptosporidium by ozone*
Temp(℃)
99%
99.9%
0.5 57.9 83
5
32.5 46.6
10 17.5 25.1
15 9.6 13.8
20 5.39 7.73
25 3.08 4.42
30 1.79 2.96
From Table 13.1 of the Drinking-Water Standards for New Zealand 2000.

Biotek OZONE vs COMMON DISINFECTION

Biotek's ozone generation system enables ozone to be used more effectively in a range of applications because of the following features:
- Tap water is the only required input
- Generates High concentration ozonated water
- High ozone dissolution and efficient destruct technology

With Biotek's point-of-use products ozone can now be used in a much larger range of applications with greater cost effectiveness.

Comparisons of Ozone with other Disinfectants:
Application, Operation, Effectiveness and Convenience
 
  Biotek
Ozone
Alcohol
Gel
Liquid
Chlorine
Chlorine
Dioxide
Heat &
Steam
Hand Sanitation
×
Produce Wash
× ×
Utensil Disinfection ×
Water Disinfection × × × ×
Surface Disinfection × ×
Deodorizing × × × ×
Thawing × × × ×
Pre-Storage Rinse × × × ×
     
  Biotek Ozone Alcohol Gel Liquid Chlorine Chlorine Dioxide Heat & Steam
Efficacy highest medium low medium medium high medium low
No chemical residues × × ×
Initial cost medium low low low high
Running cost low medium medium medium medium
Reliable Efficacy × × × ×
Safe Operation × × × ×
Simple Use × × ×
Sustainable Operation × × × ×
Fast effectiveness <10mins × × × ×
Energy/water expenditure low low high water high water high
     
  Biotek
Ozone
Alcohol
Gel
Liquid
Chlorine
Chlorine
Dioxide
Heat &
Steam
Effective on bacteria ∨* ∨* ∨* ∨*
Effective on viruses × × × ×
Effective on pesticides × × × ×
Residual disinfection ∨** ∨* ∨* ∨* ×
Free from chemical storage × × ×
Effective deodorizer × × × ×

Compatible with all materials (including row food materials)

× × × ×
Extend shelf time × × × ×
Environmentally × × × ×
Friendly × × × ×
* Effective in lab controlled test but proven to be inconstant in practical application.
** Ozone has a residence time of 20 minutes, Biotek Ozonated water will provide disinfection more than 10 minutes after output