Low-pressure UV-C systems are specialised devices that use UV-C light in the low pressure range to disinfect water, air or surfaces. They work with low-pressure mercury vapour lamps that generate UV-C light at a wavelength of 254 nm - a wavelength that is particularly effective at inactivating microorganisms such as bacteria, viruses and fungi. Here are some key features and benefits of low-pressure UV-C systems:
Efficiency and energy saving
Low-pressure UV-C lamps require less energy than medium-pressure UV lamps. They work at a relatively low operating temperature and have a lower energy consumption compared to high-pressure systems, which makes them particularly economical.
Optimum UV-C output
The wavelength of 254 nm is particularly effective in damaging the DNA and RNA of microorganisms so that they can no longer multiply. Low-pressure UV-C systems achieve a high disinfection performance with a short exposure time and are therefore popular in applications where fast and safe inactivation is required.
Long service life of the lamps
With up to 18,000 hours, low-pressure UV-C lamps have a long service life of almost 2 years. This means low maintenance requirements and a long service life, which has a positive effect on operating costs.
Low ozone production
As low-pressure UV-C systems generate a wavelength of exactly 254 nm and ozone is only produced at shorter wavelengths (below 200 nm), low-pressure UV-C systems do not normally produce ozone, which is beneficial for air quality and reduces the cost of air purification measures.
Areas of application
- Water treatmentLow-pressure UV-C systems are used to inactivate pathogens, particularly in drinking and process water systems.
- Air sterilisationThey are also used in air disinfection, e.g. in ventilation systems in hospitals, laboratories or public buildings, to reduce airborne pathogens.
- Surface disinfectionThey are suitable for disinfecting surfaces in production facilities, e.g. in the food industry.
Low-pressure UV-C systems
References
Drinking water - Municipal water supply
Water supply
Tamsweg Austria
2 x A1250
40-145 m3/h
Fish farm Malaysia - Seawater disinfection
Water supply
Malaysia
16 x 350 W ADP
245 m3/h
Water supply - Bürchen Bürchen, Valais
Water supply
Bürchen
3 x A750
95 m3/h
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