What are the effects of UVA, UVB and UVC on water, microorganisms and health?
All these happy photons are part of the spectrum, they are electromagnetic waves, but we can't see them in our eyes. They are at the bottom of the spectrum, opposite to infrared.
Let's start with the richest, and so far UV-A accounts for 5 percent of solar radiation. They are harmless, but they can help fight skin disease. In general, they are essential for our balance, which can cause only slight skin swelling after exposure for a few hours. Exposure to more than a few hours a day is not recommended, although its long-term hazards are not clear.
They are widely used in industrial products: glue polymerization, printing and screen printing drying, nail polish drying and polymerization, nightclub fluorescent lamp, etc.
Our Lavie water purifier Using UV-A
UV-B is clearly a high-dose carcinogen, or because of skin cancer cases, the sunburn room regulations are becoming more and more stringent. They are the culprit of sunburn, and fragile skin can burn in just 30 minutes.
The atmosphere filters most of it, allowing us to safely ground against the noon sun.
They rarely appear in commercial products except for some reptiles and tanned huts.
UV-C is deadly to humans and almost all living things on earth. There is no step by step on earth because they are blocked by the ozone layer (let's hope it stays there, or we have to live underground...).
Humans can make them with mercury lamps or light-emitting diodes, mainly because of their impact on bacterial DNA.
Learn more about UVs:https://fr.wikipedia.org/wiki/Ultraviolet
UV and water
So let's focus on water and the creatures that don't need it.
UV-C is used for sterilization, which can affect the DNA of bacteria and mutate it. This will stop bacteria from splitting.
If you drink a glass of water containing UV C scintillating bacteria, you will drink them, most of them live, but make sure they do not reproduce during digestion. So you will be "saved," but you will not improve the taste, smell or physicochemical aspects of the water. That's why we talk about sterilization (again, to kill bacteria, we need to triple the dose, and for some viruses, it's 10 times more.)
So if you want to drink lake water or river water, as long as it doesn't contain chemicals, pesticides, micro drugs, etc., you can buy a bottle of UV-C...
Some brands record them as water purifiers, which is totally wrong. In particular, the bad taste and odor in tap water are mainly caused by 500 chlorine by-products, some of which are known carcinogens, which are not affected by UV-C "flash".
In fact, the main participants in water use UV-C because they react very quickly, but at the end of the treatment, before chlorination passes through the public system.
But when I saw the French company installing led UV-C treatment equipment under the sink for 1300 euros, I yelled: in France, there are no bacteria in tap water, it's no use trying to eliminate them
It's as bad as buying a water softener (1000 euros, highly polluting) to improve the taste of the water: who wants to drink salt water through resin and plastic to avoid absorbing calcium?
So, one last reminder, UV-C can't "purify" water unless you believe that purification means killing a bacterium and drinking it, and I'll let you come to the conclusion.
In the SODIs (solar disinfection) process developed by EWAG, UV-A is widely used because of its bactericidal properties. Plastic bottles are exposed to sunlight for several hours to remove pathogens, which greatly reduces the incidence of diarrhea.
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UV-B is rarely used in water treatment because plastics and glass are opaque.
So what's the difference between the patented Lavie process?
The use of UVA as a bactericide is not patentable, because for decades, we have been well known to technical personnel, so we have applied for many other patents.
Fasten your seat belts and we will dive in this great innovation. We need to quickly explain what advanced oxidation processes are, including Ravi It's one of them.
The technology is simple: an active substance is released into water (in the most common process, oxidized water, or H2O2) and then destroyed by ultraviolet photons. The explosion produces free radicals, which, by bouncing back, break down anything that's not water into simple elements.
Advanced oxidation process (POA) is a set of chemical treatment process, which aims to destroy suspended or dissolved organic matter (sometimes inorganic matter) in domestic, urban or industrial wastewater. Oxidation by reaction with hydroxyl radical (Ho ·) Source: Wikipedia
Water companies use these very expensive processes to remove persistent substances in wastewater: female hormones (β - estradiol in contraceptives), endocrine disruptors, pesticides, trace drugs, etc.
However, no one thought of using this method to treat tap water, let alone using UVA instead of UV-C, let alone using chlorine in tap water as active substance.
Therefore, we have created the first domestic advanced risk-free oxidation process with the same efficiency as our ancestors. Therefore, the novelty lies in the use of UVA radiation to scintillate chlorine in tap water. UVA radiation is converted into oxidation free radicals (O, O3, H2O2, H -, Cl -), thus reducing the surrounding chemical substances to by-products, thus increasing the oxidation capacity of chlorine by 10 million to 1 million times and making it disappear, You should think about it.
By the way, living bodies (bacteria, viruses, etc.) are covered with holes created by these intense exchanges and cannot live or come out piece by piece.
Let's conclude: avoid UV-C products if you are not a wild camping enthusiast or a resident of the Philippines, do not expose yourself too often and too long to the sun for your health, prefer its indirect light, and remember that the pollutants of wastewater are appearing in drinking water, because guess or is being released from the treatment plants (if , in rivers, rivers or groundwater... which we then consume in the form of bottled water or tap).
Thus, protecting yourself from micro-pollutants can probably be interpreted as a precautionary principle, but would you think about drinking drugs or pesticides, even in very small quantities?
There are still too many pesticides in tap water. Source:Generations
Similarly, do you think that drinking chlorine, a biocide in tap water, has no effect on the bacteria in your windpipe?
You are "consumactive" and it is up to you to judge.