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The water disinfection properties of ultraviolet light were discovered over 100 years ago. It has been established that UV-C rays, at a 260nm wavelength, are capable of permanently killing 99.99% of all bacteria, viruses and other micro-organisms present in water by attacking their DNA. This is why major cities and most of the industrial community has moved away from chlorine as the traditional water sanitizer because of grave health risks, notably many forms of cancer. The new standard? UV technology.
The key elements to disinfect water in an efficient manner are two-fold:
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UV Light Exposure Time2
Micro-organisms in water have to be exposed to UV light for at least 1 second in order to be destroyed. The UVTECH system exposes water passing in the stainless steel tube for over 2 seconds, which creates an ample safety buffer to optimize disinfection.
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2.2 |
Energy Generated (in micro-watts/sec./cm2)
The energy generated by UV rays at the farthest distance from the lamp indicate its disinfection efficiency level. The UVTECH system produces 70,000 micro-watts/sec./cm2. Furthermore, the reflection of the light on the stainless steel chamber increases the energy level by 30%*. The total energy released therefore reaches 91,000 micro-watts/sec./cm2, which is more than sufficient to completely eradicate all micro-organisms. |
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UV water treatment is used everywhere:
- Drinkable water purification systems
- Municipal water treatment & purification
- Pharmaceutical & hospital industry
- Brewery industry
- Fish farming / Aquaculture/ Hydroponics
- Water stores, restaurants
- Cooling towers
Chlorine and health risks studies:
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The tables below list the energy levels required to destroy specific micro-organisms.
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Aeromonas sp. |
3,620 |
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Agrobacteria tumefaciens
(Crown Gall Disease) |
8,500 |
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Bacillus anthracis
(Anthrax) |
40,000 |
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Bacillus magaterium (s)
(Wet wood Disease) |
52,000 |
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Bacillus magaterium (v) |
2,500 |
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Bacillus subtilis (s) |
58,000 |
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Bacillus subtilis (v) |
11,000 |
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Ceratomyxa shasta |
30,000 |
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Clostridium tetani
(Tetanus/Lockjaw) |
23,000 |
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Corynebacterium diptheriae
(Diphtheria) |
6,500 |
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Esherichia coli
(E. coli) |
7,000 |
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Legionella bozemanii
(Pontiac Fever) |
3,500 |
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Legionella dumoffii |
5,500 |
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Legionella gormanii |
4,900 |
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Legionella longbeachae |
2,900 |
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Legionella micdadei |
3,100 |
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Legionella pneumophila
(Legionnaires Disease) |
3.800 |
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Leptospira interrogans
(Infectious Jaundice, Leptospirosis) |
6,000 |
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Mycobacterium tuberculosis
(Pulmonary Tuberculosis) |
10,000 |
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Moraxella catarrhalis
(Meningitis, Endocarditis, Pneumonia, Bronchitis, Otitis Media, Sinusitis, Bactoremia) |
8,500 |
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Proteus vulgaris
(Urinary Tract Infection, Bacteremia, Pneumonia and Focal Lesions) |
6,600 |
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Pseudomonas aeruginosa (e) |
10,500 |
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Pseudomonas aeruginosa (l) |
3,900 |
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Rhodospirilium rubrum |
6,200 |
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Salmonella enteritidis |
7,600 |
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Salmonella paratyphi
(Para-Typhoid Fever, Enlargement of Spleen) |
6,100 |
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Salmonella typhimurium
(Gastroenteritis) |
15,200 |
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Salmonella typhosa
(Typhoid fever, Enteric fever, Typhus Abdominales) |
6,000 |
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Saprolegenia hyphae |
10,000 |
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Sarcina lutea
(Reproductive Problems) |
26,400 |
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Serratia marcescens |
6,200 |
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Shigella dysenteria |
4,200 |
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Shigella flexneri
(Dysentery) |
3,400 |
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Shigella sonnei
(Enteric Infection) |
7,000 |
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Staphylococcus aureus |
7,000 |
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Staphylococcus epidermidis |
5,800 |
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Streptococcus faecalis
(Urinary Tract Infection and Bacterial Endocarditis) |
10,000 |
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Streptococcus hemolyticus
(Various Infections) |
5,500 |
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Streptococcus lactis |
8,800 |
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Viridans streptococci |
3,800 |
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Bacteriophage
(E. Coli, Bloody Diarrhea, Hemorrhagic Colitis) |
6,600 |
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Hepatitis Virus |
8,000 |
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Influenza Virus |
6,600 |
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Polio Virus |
21,000 |
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Rota Virus
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24,000 |
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Small Pox Virus
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9,000 |
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Chlorella vulgaris
(Green Algae) |
22,000 |
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Mucor ramosissimus
(Sinuses, Brain, Eyes, Lungs, & Skin Infections) |
35,200 |
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Penicillum expensum
(Blue Mold) |
22,000 |
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Penicillum roqueforti
(Fungi) |
26,400 |
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Trichosporon
(Bakers Yeast) |
8,800 |
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Common yeast cake
(Yeast Cake) |
13,200 |
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Saccharomycs
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17,600 |
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Brewers yeast |
6,600 |
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Giardia Lamblia
(Beaver Fever) |
5,000-10,000 |
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Vibrio cholera
(Cholera) |
6,500 |
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Cryptosporidium
(Diarrheal Disease) |
5,000-10,000 |
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Brewers yeast |
6,600 |
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* Westinghouse Technical Manual, 1987
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