Fresh clean air is the basis of life for plants, animals and humans.
Odours, greases and microorganisms may pollute the air and UV radiation is a cost-effective alternative for many air treatment processes.
UV light sources from Heraeus emit two wavelengths for air treatment:
UV-C radiation at 254 nm has an intensive germicidal effect - chemicals do not need to be added. Pathogens such as bacteria, viruses, parasites, spores, mould and dust mites are inactivated. UV radiation at 185 nm generates ozone from the oxygen in the surrounding air which is used to oxidise air pollutants.
Cleaning of air requires an individual UV treatment, as the kind and degree of the pollution vary in each case, and air temperature, air velocity and air flow rates also play an important role. For the treatment of polluted air, Heraeus supplies various lamp technologies for commercial use ? and jointly with you works out the optimal UV solution for your individual air treatment application.
Advantages of Heraeus UV light:
-Low space requirement enables easy retrofitting into existing air-conditioning plants
-High cost effectiveness with Heraeus UV light due to the unique Longlife coating: extraordinarily long service life - even in the short-wave VUV range
- Easy handling
- Just a few lamps and accessories required
- For compact plants
- No addition of chemicals
- Low-maintenance procedure
- Low operating and investment costs
UV lamps for low-germ air
UV radiation ensures healthy and low-germ ambient air and improves hygienic and storage conditions in the pharmaceutical and food processing industries. Microorganisms in the air such as viruses, bacteria, yeast fungi and mildew can contaminate raw materials and spoil food. UV light reliably reduces the number of germs in the air. In particular short-wave UV-radiation has a strong bactericidal effect. It is absorbed by the DNA of the microorganisms and destroys its structure. In this way, the living cells are inactivated.Germ-polluted air can be disinfected already in the intake-air ducts to reduce germ levels in processing, packaging and storage rooms in the long term. Only ozone-free UV-C lamps are used for these applications. A special quartz glass of the lamp tube removes the ozone-generating radiation (VUV).
UV-C lamps for air-conditioning plants UV light provides a gentle and chemicals-free possibility to disinfect the water in washer boxes of air-conditioning plants which is required to humidify the air. UV light ensures clean and low-germ ambient air and the air is not polluted with bactericides.
VUV lamps for degradation of odours
Ozone-generating VUV radiation additionally removes odours in the exhaust-air of canteen kitchens, in odour-intensive grocery trade, e.g. in the extractors of fish counters, in the food-processing industry and in sewage works. This is of particular importance if the exhaust air escapes to neighbouring residential areas. The treatment of exhaust air with VUV radiation prevents odour problems in a simple way and enables compliance with official regulations with low investment expenditure.
Industrial air pollution with aerosols, highly volatile organic compounds and odorous substances also puts a strain on the environment and affects people's health.
Short-wave VUV radiation (vacuum UV radiation = 185 nm) is used to generate ozone from the oxygen in the surrounding air and activate it for the oxidation processes. In this way, UV oxidation decomposes pollutants in the air flow.
VUV lamps for cleaning industrial exhaust air
Solvents are released during the production and use of varnishes and paints, e.g. in paint shops and printing houses and in the automotive industry. Organic pollutants in the exhaust air of the chemical, plastics and rubber industry and from wood and surface treatment may also cause waste air problems.
These pollutants can easily be degraded with the help of UV light. In most industrialised countries, local air pollution has strongly decreased in recent decades due to statutory regulations regarding air pollution control. In Europe, e.g. the EU Directive relating to VOC (volatile organic compounds) regulates the treatment of exhaust air. It obligates smaller businesses as well to clean their polluted and odorous waste air, even in the case of low concentrations, before it is released into the environment. In Germany, the Directive has been implemented into national law with the 31st BImSchV (Federal Emission Control Ordinance) which came into force on 1 November 2007.