How is UV water treatment done? (process)
1 answer
The principle of ultraviolet water treatment is simple: it involves passing the water, after filtration, through a reactor containing one (or more) UV lamps to disinfect the water.
How it works ?
There are 3 categories of UV rays (depending on the wavelength):
UV-A (400-315nm): immediate tanning of the skin
UV-B (315-280nm): synthesis of vitamin D
UV-C (280-100nm): germicidal effect
The optimum germicidal effect of UV-C is reached at 254nm, so this is the wavelength that will be used for water disinfection.
At 254nm, UV-C rays penetrate the DNA of microorganisms and completely neutralize it.
Note that disinfection efficiency also depends on the flow to be treated, the salinity of the water and also the time of exposure to UV-C.
These factors must therefore be taken into account when designing the device.
Questions on the same topic
I am looking for online training on the treatment of unconventional water, specifically desalination and demineralization. Do you have any tips or recommendations?
Last response: Hello, I recommend the IOWater training courses! Cordially Isabelle Duchemin / Polymem
Can raw water be made drinkable by UV treatment or is it necessarily by reverse osmosis?
Last response: Hello, In order to obtain drinking water from raw water, it would first be necessary to have a complete analysis of this water. Read more
We are looking for a solution to make the water from the well of our future (old) house drinkable, not connected to the collective drinking water network. Recommendations?
Last response: Hello, It is important to carry out an analysis of your water before taking any action. This will make it possible to determine the physicochemical parameters of the latter and highlight the... Read more
I am looking for a uv treatment to treat borehole water for a guest house. What do you recommend?
Last response: Hello, BIO-UV specializes in the design, manufacture and marketing of UV reactors and ozonators (Triogen). In order to send you a suitable technical proposal, we would need additional information... Read more
I would like to treat well water against enterococci, can UV treatment be suitable?
Last response: Hello, To treat the water of a well, I invite you to put a filter upstream of your UV. There are kits: https://www.1h2o3.com/produit/kit-de-potabilisation-uv-home/ Have a good day
What is the best system for a vegetable shop wishing to recycle its washing water and therefore reuse it in a closed circuit?
Last response: If you are looking for efficiency, go for the Ozone & ZonoSistem
What is the difference between prechlorination and disinfection?
Last response: Hello Pre-chlorination is a process for treating certain reducing compounds at the entry into the potabilisation process. This technique can lead to the formation of undesirable by-products or THMs... Read more
What industries benefit most from advanced wastewater treatment technologies ?
Last response: Les technologies avancées de traitement des eaux usées sont particulièrement bénéfiques dans plusieurs secteurs industriels. Read more
I am looking for a reactor combining UVc and Ozone. What do you recommend?
Last response: Company Bio UV very professional and which does not just sell its products but knows how to follow you in the evolution of your projects We tested !!!
Offering filtration with a bacterial consortium seeded on lithothamne, coupled with UVc, some swimming pool algae remain intractable without chemistry. We were thinking of adding a copper electrolyser or a UV-Ox device. Is this allowed for ERPs?
Last response: Hello, to make it short there are two situations: either the swimming pool is a swimming pool, that is to say disinfected and disinfecting water (therefore de facto chlorinated), or it is an atypical... Read more