How does an Ultraviolet rainwater sterilizer work?
The ultraviolet ray is a kind of invisible light wave to the naked eye. It exists on the outside of the purple ray on the spectra thus it is called the ultraviolet ray. The ultraviolet ray is subdivided in wave band A (UVA), wave band B (UVB), wave band C (UVC). The wave length of UVC is between 100nm to 280nm - and the most effective germicidal wave band is 253.7nm.
1. Principles: If you expose the water to UVC spectrum at the wave peak of 254nm for a period of time the nucleic acid, deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) of microorganisms will absorb UV rays and be damaged by the rays – thus they perish - so the water is sterilized. UV rays have a certain effect on protein and other life forms too.
2. Sterilization range: UV water sterilizer can effectively kill the algae, fungi, bacteria, rickettsia and virus to purify the water.
3. Merits of the sterilizer: UV sterilizer is a completely physical way to sterilize water. It is easy to use, cost effective , broad spectrum, does not require any chemicals, generates no secondary pollution, does not create corrosion, leaves no residue and is easy to maintain.
4. Application range: UV water sterilizer can be mounted as a pre or rear sterilization equipment with domestic or industry water purification equipment. It can be applied to various kinds of water purification.
5. For it to work effectively the water must be free of particles larger than 5 micron.