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UV Treatment UV Treatment
UV-c Sterilizers water treatment
uv treatment details
 
principle

Ultra violet rays emitted at 254 nm generally known as UVc are capable of destroying living micro organisms and notably bacteria, viruses, fungi and algae. UVc rays act directly on organisms' DNA.

 
UV rays
 
advantages

• A system that avoids the use of chemical products:

  • it is therefore ecological and has no impact on the environment
  • it does not create harmful sub-products
  • it enables compliance with the European Directives related to the use of biocides

• A physical active agent:

  • it does not modify the treated fluid's physico-chemical balance
  • there is no risk of excess dosage
  • no sub-products are formed

• It may be used in combination with other types of treatment without any constraints:

  • filtration
  • softening and demineralisation
  • inverse osmosis
  • biological treatment
  • combination of H2O2/UV and ozone/UV.

• Investment and maintenance costs are low:

  • easy installation
  • maintenance is limited to cleaning and UVc ray lamp replacement
 
applications

• Drinking water

• Industrial process water:

  • foodstuffs
  • pharmaceuticals
  • cosmetics
  • glassmaking

• Water for technical applications:

  • cooling water
  • swimming pools
  • air conditioning and fine spraying
  • farm fish

• Maintaining quality of stored water

 
details on treatment by ultraviolet light
 
uv dosage

The UV dose corresponds to the UV energy that a living micro-organism has to absorb in order to be destroyed. The table below presents the UV doses required to kill 99.9% of micro-organisms. (those are only examples).

 
Bacteria
UV dose in milijoule x cm2 x sec
Aeromonas
3,62
Proteus vulgaris
6,6
Agrobacteria tumefaciens
8,5
Pseudomonas aeruginosa (lab. strain)
3,9
Bacillus anthracis
8,7
Pseudomonas aeruginosa (env. strain)
10,5
Bacillus magaterium (vegetative)
2,5
Rhodospirilium rubrum
6,2
Bacillus magaterium (spores)
52
Salmonella enteritidis
7,6
Bacillus subtilis (vegetative)
11
Salmonella paratyphi
6,1
Bacillus subtilis (spore)
58
Salmonella typhimurium
15,2
Ceratomyxa shasta
30
Salmonella typhosa
6
Clostridium tetani
22
Saprolegenia hyphae
10
Corynebacterium diptheriae
6,5
Sarcina lutea
26,4
Esherichia coli
7
Serratia marcescens
6,2
Legionella bozemanii
3,5
Shigella dysenteria
4,2
Legionella dumoffii
5,5
Shigella flexneri
3,4
Legionella gormanii
4,9
Shigella sonnei
7
Legionella longbeachae
2,9
Staphylococcus epidermidis
5,8
Legionella micdadei
3,1
Staphylococcus aureus
7
Legionella pneumophila
3,8
Streptococcus faecalis
10
Leptospira interrogans
6
Streptococcus hemolticus
5,5
Mycobacterium tuborculosis
10
Streptococcus lactis
8,8
Neisseria catarrhalis
8,5
Viridans streptococci
3,8
 
Virus
UV dose in milijoule x cm2 x sec
Bacteriophage
6,6
Hepatitis virus
8
Influenza virus
6,6
Poliovirus
21
Rotavirus
24
Spore
UV dose in milijoule x cm2 x sec
Mucor ramosissimus
35,2
Penicillum expensum
22
Penicillum roqueforti
26,4
Alghe
UV dose in milijoule x cm2 x sec
Chlorella vulgaris
22
The advantages of our sterilizers
 
design
Our UV sterilisers are designed and produced using state of the art teschnologies:
  • Computer Aided Design and Manufacture
  • Laser cutting
  • Soldering under a controlled atmosphere
 
reliability
High quality finish and reassuring reliability:
  • Mirror polished reactors
  • Industrial quality electrical units
  • Exclusive use of mono-base, high yield lamps
  • Ballast is electronic without starter and do not heat
  • All components are of the highest quality and tested
 
installation
Installation is fast and easy:
  • Our reactors are of vertical design
  • Compact size
  • Reactors and electrical units are delivered pre-wired
  • An upper purge cap enables air removal when placed in the water
 
manteinance
Maintenance has been made simple:
  • The reactors are designed to enable 100% emptying
  • Lamps can be changed without stopping the water flow
  • An exclusive proofing system prevents any risk of breaking the quartz tube or of leaks