Hygiene processing and disinfection
Drinking water has to be of perfect hygienic quality in accordance with the relevant ordinances. Various disinfection measures are therefore used in the water supply:
In chemical disinfection substances containing chlorine are usually dosed (chlorine dioxide, sodium and calcium hypochlorite solutions or chloric gas solutions).
An excellent disinfection is also achieved when ozone is used. However, as a rule a filter stage for the decomposition of residual ozone and biological mineralisation is required.
The disinfection of water with UV light is a physical process. Under favourable conditions, the UV C radiation inactivates the microorganisms in the water in such a way that they can no longer reproduce and die. Since this is a physical process, no chemical by-products or by-products hazardous to health arise during UV treatment. Ultrasound can be used to improve the effect further.
Microorganisms can also be held back with membranes (pore size smaller than 0.2 µm).
Thermal disinfection is primarily used at boiling in households or in hot-water treatment systems for Legionella prevention.
UV treatment for drinking water treatment
UV treatment is only effective during the radiation time, i.e. does not have an enduring effect in the net. UV systems are often used as the last stage in a treatment chain for final hygiene processing. Only tested and certified systems with a minimum dose of 400 J/m² may be used.
We use systems of different manufacturers. The choice of the correct UV technologies and systems depends on the respective water quality on hand.
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