How Long Does it Take UV to Kill Bacteria in Water?
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- Опубліковано 31 бер 2018
- How Long Does it Take UV to Kill Bacteria in Water?
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How Long Does it Take UV to Kill Bacteria in Water
As Water passes through the UV system it kills the bacteria in your water. Make sure the Ultraviolet System is sized correctly to kill the bacteria in your water for your family.
• How Does an Ultraviole...
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Please comment or ask questions below. #garythewaterguy #ultravioletdisinfection #waterfiltration - Наука та технологія
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Thanks for keeping this under 3 minutes
I try to keep it short and to the point. I also have a whole series of under 60 second shorts here, you might like them too and I am adding more shorts all the time ua-cam.com/play/PLmnBltD77jBXneAdc5aJh1pU3byUMksXD.html
I'm all the way here in India and have just stumbled upon this single video because I was researching UV.
And I already feel like I know and trust Gary, the Water Guy with all my water-related needs and queries :)
Glad to hear. Please share video with friends and family!
Quick question for you. The viqua vh200 f10 uv with built in water filter seems to have the inlet and Outlet reversed am I correct on that? I thought the inlet was always on the bottom?
Yes, it is on the bottom, check it out here waterestore.com/products/viqua-9-gpm-ultraviolet-system-vh200-f10
Great tips, thank you! If tap water is flowing at usual pressure thought a 1/2" pipe, spins then "sterilization" instantaneous?
@No Clickbait Clips quarz glass is transparent!
Hi .. is it advised to keep uv light always on in my RO system ? It’s connected to direct AC input through choke. So it’s always on inspite of water is running through the pipes. Pls help
Yes it is as it creates a barrier between treated and untreated water.
I just purchased and installed your V-200 UV light. I have it installed horizontally. The installation instructions dictate the outlet needs to be on top to purge any air from the system. I did all this but I realized the inlet is on the side where the light plugs in and can be removed. In the instructions it has the inlet on the other end. I assume this should not matter as there are no valves I can see inside the system. Am I correct with this installation?
Thank you!
It does not matter a great deal when installed horizontally but typically the end where the lamp plugs in goes up in a vertical installation and that would be the output. You will be fine.
@@GarytheWaterGuy ok thank you!
Would you recommend using Chlorine Dioxide after a UV light system?
Great question! When you install a UV system it will kill the bacteria as water flows through it. It will not kill bacteria in the water downstream of the UV. That water will reinfect the treated water so you need to chemically disinfect the whole house after installation.
@@GarytheWaterGuy Hello. Do you think it is necessary to use these devices in city water (chlorinated) or is it unnecessary paranoia and waste of money?
How much will a 10000 gallon a day cost me if I wanted to put a hog barn on it that is currently using well water that is visibley rustey at times
10,000 gallons per day is 7 gallons per minute but I doubt the water flows continuosly at the same rate. This one will handle up to 16 gpm waterestore.com/products/uv-dynamics-16-gpm-minirack-mr485-tp2-220
if only this showed infected water and samples after uv like some of the competition
Which competition are you referring to?
@@GarytheWaterGuyI think their asking to see before/after results of treated water that would show scientifically that the bacteria is really being killed.
I have a handheld tv lamp that came with a uv die kit for finding leaks in cars ponds and other places it’s a strong one it came with the yellow eye glasses to protect the eyes .
Do you use that in some way for disinfecting your water?
@@GarytheWaterGuy yes UV light kills micro organisms they sell filters that have uv lights in them the sun will do it some what too
I have a well system.. Does this go before the softener or after?
Had to look this up myself. This goes after everything right before it splits into the house. This is the last step
Yes, that is correct.
if I use led uv light??how much that i needed??n how long.. please answer me A.S.A.P. its urgent
Sorry, l know very little about led uv so I can’t help you.
Cool
I have a question 🙋♀️ okay my husband and I are buying a house. The house has a well and a holding tank. When the water was tested it came back too high for chloroform and it was decided the homeowner would have a UV light installed. I’m still a little unsure how this works as far as the decontamination. If the water in the well and the holding tank are both still contaminated and say I turn a faucet on in the house, then contaminated water passes through the UV light chamber into my cup and is no longer contaminated that fast? And should we go ahead and chlorinate the well just for overall safer water? Please help!
Coliform not chloroform 😂
Yes, as water passes through the UV it kills the bacteria. yes, you should have the water chemically disinfected to too.
I'm going to install a UV light but not sure where it goes in the system. Should it be the last thing before the tap? So, water line in, Particle Filter, Softener, Charcoal Filter, UV light, Tap, is this correct? Thanks
Thanks for your speedy reply. Ok so if I have this correct. Line in, softener, 5 micron filter, charcoal filter, UV, tap. So there's no filter before the softener? Thanks
Ok thanks very much for your replies.
If it rakes milisecond why does we need to ajust the flow rate ?
Great question. Because if the volume of water is greater than the system can handle it won’t give enough exposure for it to kill the bacteria. That is why they are rated based on flow rate.
does it take less then 1 second to kill bacteria???
i think depends on how you drink your water.. if you use hot and cold dispensers like me then you need uv disinfection in the tank/bottle you keep your water.. because after a day or 2 bacteria grows back in there.. at the minimum you just get gas in your stomach or worst hospitalized..
This video refers to whole house UV systems.
How effective is it at killing protozoa?
Yes, it does kill protozoa
You make it sound like you are a Government approved test lab.
Nope, we are not, just some people helping families like yours fix their water.
If the water flows1 gallon per minute I doubt that small one will keep the water in a whole minute to clean it of bacteria. That looks like it might hold a pint of water if there wasn't a tube running through the middle for the UV light.
It doesn’t need to hold 1 gallon of water. It will kill bacteria as the water passes through as long as the flow is what the system is rated for in gallons per minute
I read somewhere it takes 10 seconds to kill virus within 6 inches radius. If it only take millisecond for water to travel thru the tube with uvc light bulb in it, there is not enough time to destroy the virus. There need to be some buffering mechanism to slow down the water traveling along the long UV-C light bulb. The buffer may be a coiled glass tube winded along the light bulb. The thinner the tube, the slower the water travel. Anyway, it is an engineering problem may, or may not have solved by this product. I feel that I need proof that this UV-C filter is really reducing the counts of germs/viruses.
Hi Edmond when installed correctly and sized for the flow rate of your pump they work every time. We have sold thousands of these systems, there are well over a million in use today all over the world. We have customers with bacteria in their water, they purchase and install a UV system and the bacteria is gone. They are guaranteed to work.
@@GarytheWaterGuy Gary, they're asking for proof. The only thing you literally said was, "They are guaranteed to work" isn't proof. You did say you do free water samples right? Well, maybe you should do some free water samples of before installation and after installation. Gary, if you could please provide water sample proofs of water test samples of before UV installation and proof of water test samples of after the UV device has been installed, that would be great.
@@GumShoes21 Here is the proof guys...I had bacteria + Ecoli in my water based on lab test of water sample...I installed a UV light, took a new sample to the lab and guess what...no bacteria. If that is not proof enough then waste your own feckin time doing a scientific study...oh, maybe it only worked because my bacteria was Canadian...bloody bunch of ignorant goofs !
Distance between uv bulb and stainless steel casing less than 6 inch imo..
You have to take numerous factors into consideration, including: light's wavelength and strength, water condition, system configuration, light's efficiency decreases with bulb's age, etc.
Some oversimplified examples:
• A 25W bulb will sterilize faster than a 5W bulb.
• Water with 350ppm contaminates will require significantly more sterilization time/power than water with 50ppm contaminates.
• A brand new bulb sterilizes somewhat better than a 3 month old bulb, and significantly better than a 1 year old bulb. (Different types of bulbs have different expected lifespans. Their efficiency can vastly vary from beginning to end. It's usually recommended to replace a bulb every so often, regardless if it still lights up or not -meaning you don't always wait for it to burn out before replacing it.)
* Many UVC sellers claim their bulbs have higher wattage than they actually do. They do this because they know people will pay more if they think they're getting a better product.
The video explains well, except the part "How Long Does it Take UV to Kill Bacteria in Water?
"
At the one minute 9 second mark it tells you as the water flows past the light it kills the bacteria. It varies depending on the flow rate of your system but just a few seconds.
Salesman of the year.
Is that a compliment or criticism?
More like Gary the used car salesman. Didn't realize this was a commercial.
No, not at all. I explain the question raised in the title and offer links to more info if you need it.
You didnt actually answer the question... i cant see these small uv lights being effective at all... contact time way to little??
As long as they are sized (based on flow rate) and installed correctly they work every time.
Hi does it work on saline water and makes it fresh water ?
no
Knife wrench!!
Does UV kill iron bacteria?
No it does not. You need to use a chemical injection system to get rid of iron bacteria.
@@GarytheWaterGuy What if I just shock treat the entire system with bleach?
I wanted to get a price , after I clicked on the web sight there was no price, so I clicked to exit. The time I waisted I can't get back. No price when I click, no purchase, no problem.
Sorry to hear. If you let me know what you need the price on I would be happy to get it for you.
When they do water tests they only test for one or two bacterias. So who knows how many varieties are actually in water. Also does the system use mercury that dissipates somehow? If so, please explain where it dissipates to? Thanks
Municipalities typically test for ecoli and Choliform bacteria, which can lead to sickness and death. What other kinds of bacteria are you concerned about? No, UV systems use Ultraviolet light to kill the bacteria. There is mercury in the UV lamp but it never gets into the water.
Gary the Water Guy I just know there are many types of bacteria, some beneficial to our bodies and some not. There are more than two kinds. How does mercury help process if it doesn’t touch water? Why is it used with ultra violet?
@@jenniferbhalahansen5135 Municipal Health units just about everywhere consider water potable if it has zero ecoli and zero choliform bacteria. Mercury is used in the manufacture of the UV lamps, no mercury goes into the water.
Gary the Water Guy thanks
The classic enthusiastic salesman!
It’s easy to be enthusiastic about products like this when they help so many families.
boom, he strikes back again
it can take forever since uvc doesn’t kill spores
At least 1 minute is needed to clean the water!!!
What are you basing that information on? What is your source?
@@GarytheWaterGuy 10 seconds for average bacterium @ 6 inches. Even at the intense proximity, you wont kill some of it, simply damage its DNA in a way it cant replicate if at all with the time it spends in contact with the light. www.americanultraviolet.com/uv-germicidal-solutions/faq-germicidal.cfml
@@jc-hd3ih
To quote something from the same page you just read.
=========
Q: To be effective, how close to the surface do the lamps need to be?
The exposure of germicidal ultraviolet is the product of time and intensity. High intensities for a short period and low intensities for a long period are fundamentally equal in lethal action on bacteria. The inverse square law applies to germicidal ultraviolet as it does to light: the killing power decreases as the distance from the lamps increases. The average bacterium will be killed in ten seconds at a distance of six inches from the lamp in an American Ultraviolet Germicidal Fixture.
========
Most people don't understand if you turn up the intensity it will be more deadly.
LIke if you are at Sunny side on mercury you would perish by solar radiation.
OR standing a short period in the reactor of Chernobyl or 100 meters from the reactor for long enough time, and you will die from radiation.
The same physical concepts apply. If the guy has equivalent 10 of Chernobyl reactor in his tube anything will die instantly
If he has the equivalent of a chernobyl 10 km away, the bacteria /virus won't die.
@@tagert1430
Please keep in mind the 10 seconds at 6" distance is NOT a universal rule. That only applies to that specific company's equipment.
A lot of people Google this question and many of them end up on that exact website, because they're the only people who can give a definitive answer since they're referring to one specific item under one specific set of circumstances. However, people are using that answer as if it's a general rule for UV lights, which couldn't be further from the truth.
As you shared in your example, the answer to the question "How long does it take for UV light to kill bacteria and viruses?" greatly varies. That's why there's no standard answer to that question.
If you're using a professional high grade medical disinfection system, it will be far more powerful than a handheld LED UVC wand. UVC wands can be effective, but they require a longer exposure time in very close proximity and can only do a very small space at a time. Also, they don't usually KILL the bacteria/viruses, but they damage their DNA so they cannot reproduce.
UVC handheld wands, UVC water filtration systems, UVC fishtank kits and UVC hospital setups are all very different situations. There's no standard answer.
It must take time to sterilized and so it too fast then it may not take all effect
Nope. These units are sized based on the flow rate. If you run water through a 10 gallon per minute UV system like this one waterestore.com/products/hum-safe-water-10gpm-minirack-mr320e-tp2s-220 at 10 gallons per minute or slower it will kill the bacteria every time. We have proven it thousands of times in homes all over North America
"How Long Does it Take . . .". I actually had to skip through so much of this sales pitch to find NOTHING stating how much time it takes. I can fully understand why you would want to show what you have to offer those that need ways to filter their water. I too am a capitalist and feel earning income by offering services and products for a possible fee is a good thing. What a disappointment to see that you are only trying to take my money vs. telling me how much time it actually takes. It is possible by skipping through so much of the video I missed the part where you stated the amount of time it takes but I doubt it.
If you did actually say how long it takes please tell me at what time in the video that you did and I will edit this comment and apologize.
As the water passes through the UV it kills the bacteria on it's way through, depends on the size of the UV. If you have an 8 gallon per minute UV and you pass through 8 gallons of water it will take one minute.