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A greater public awareness of
contamination in water supplies has occurred in recent years which,
in turn, has resulted in the successful application of alternative
methods of treatment, like UV treatment.
Chemtronics offers complete UV systems for high technology
industries such as Pharmaceutical, Chemical, Semiconductor, Soft
Drinks, Water Authorities, Potable Water, Offshore Platforms.
At the other end of the spectrum, the low cost residential systems
have been successfully solving individual water quality problems for
many years.
Application:
The application of ozone and UV in the process water for a
pharmaceutical company.
Advantages:
- UV does not alter taste, odour, colour or pH of the water
- UV does not require the addition of chemicals
- UV does not impart toxic by-products into the water
- UV systems are compact and easy to install
- UV systems require very little maintenance
- Running costs are often lower than those of a household lightbulb
When exposed to sunlight, germs are killed and bacteria and fungi
are prevented from spreading. This natural disinfection process can
be utilised most effectively by applying UV radiation in a
controlled way.
Packaging materials can be efficiently and easily disinfected using
UV-C radiation. Likewise, the shelf life of several foodstuffs is
improved using UV radiation.
Surface disinfection makes most sense when the products have minimum
resistance to microbic contamination.
The Blue Light disinfection module consists of a UV cassette and
power supply unit, designed for easy installation and handling.
The lamps are protected against splash water by a sealed quartz
glass window.
The reflectors inside the lamps guarantee uniform radiation of the
surface.

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Ultraviolet Dosage Required
For Destruction Of Organisms (uW-s/cm2)
Ultraviolet energy levels at 254 nanometer units wavelength Required
for 99.9% destruction of various microorganisms UV energy in
microwatt-seconds per square centimeter |
| Bacteria |
Mold Spore |
| Agrobacterium tumefaciens |
8,500 |
Aspergillus flavus (yellowish green) |
99,000 |
| Bacillus anthracis |
8,700 |
Aspergillus glaucus (bluish green) |
88,000 |
| Bacillus mrgaterium (vegetative) |
2,500 |
Aspergillus niger (black) |
330,000 |
| Bacillus mrgaterium (spore) |
52,000 |
Mucor ramosissimus (white gray) |
35,200 |
| Bacillus subtillis (vegetative) |
11,000 |
Penicillum digitatum (olive) |
88,000 |
| Bacillus subtillis (spore) |
58,000 |
Penicillum expensum (olive) |
22,000 |
| Clostridium tetani |
22,000 |
Penicillum roqueforti (green) |
26,400 |
| Corynebacterium diptheriae |
6,500 |
Rhizopus nigricans (black) |
220,000 |
| Echerichia coli |
7,000 |
- |
- |
| Legionella bozimanii |
3,500 |
- |
- |
| Legionella dumoffii |
5,500 |
- |
- |
| Legionella gormanii |
4,900 |
Algae |
| Legionella micdadel |
3,100 |
Chlorella vulgaris (algae) |
22,000 |
| Legionella longbeachae |
2,900 |
- |
- |
| Legionella pneumophila |
3,800 |
- |
- |
| Legionella interrogans (infectious jaundice) |
6,000 |
- |
- |
| Mycobacterium tuberculosis |
10,000 |
Protozoa
|
| Neisseria catarrhaiis |
8,500 |
Nematode eggs |
92,000 |
| Proteus vulgaris |
6,600 |
Paramecium |
200,000 |
| Pseudomonas aeruginosa (laboratory strain) |
3,900 |
- |
- |
| Pseudomonas aeruginosa (environmental strain) |
10,500 |
- |
- |
| Rhodospirilum rubrum |
6,200 |
- |
- |
| Salmonella enteritidis |
7,600 |
Virus |
| Salmonella paratyphi (Enteric fever) |
6,100 |
Bacteriophage (E.coli) |
6,600 |
| Salmonella typhimurium |
15,200 |
Hepatitis virus |
8,000 |
| Salmonella typhosa (Typhoid fever) |
6,000 |
Influenza virus |
6,600 |
| Sarcina lutea |
26,400 |
Poliovirus |
21,000 |
| Serratia marcescens |
6,200 |
Rotavirus |
24,000 |
| Shigella dysenteriae (Dysentery) |
4,200 |
Tobacco mosaic virus |
440,000 |
| Shigella flexneri (Dysentery) |
3,400 |
Virus of Infectious Hepatitis |
8,000 |
| Shigella sonnei |
7,000 |
- |
- |
| Staphylococcus epidermidis |
5,800 |
- |
- |
| Staphylococcus aureus |
7,000 |
Yeast |
| Streptococcus faecalis |
10,000 |
Baker's yeast |
8,800 |
| Streptococcus hemolyticus |
5,500 |
Brewer's yeast |
6,600 |
| Streptococcus lactis |
8,800 |
Common yeast cake |
13,200 |
| Streptococcus viridans |
3,800 |
Saccharomyces ellipsoideus |
13,200 |
| Vibrio cholerae |
6,500 |
Saccharomyces sp. |
17,600 |
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