…… Water filter
- Thread starter Lei
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Radon Removal with Aeration – Pure Water Products, LLC
An article that overviews radon removal methods, focusing on aeration and various aeration and air stripping methods.
What my go-to source had 10 years ago. Fallout is largely particulate matter but some gasses are radioactive too.
Please note that when asking for assistance, you should use the HELP prefix, always.
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Depends on whether you want a countertop filter or a camping/pocket filter.
I thought removing all particulates would remove radiation. Of course you wouldn't carry the filter in your pocket then.
The Katadyn pocket filter is good for years if the ceramic filter isn't frozen or dropped. About 370 bucks. You will get a workout pumping one of these.
Don't know anything about radon filters.
I thought removing all particulates would remove radiation. Of course you wouldn't carry the filter in your pocket then.
The Katadyn pocket filter is good for years if the ceramic filter isn't frozen or dropped. About 370 bucks. You will get a workout pumping one of these.
Don't know anything about radon filters.
In this time of possible nuclear war we all need to be concerned about radiation.
Many high end filters are good at filtering out dirt, germs and virus But they don't filter out
radiation. If Honolulu were hit by a nuke I am about 300 miles away. Radiation contamination would be a concern. I don't want to drink radiated water.
Many high end filters are good at filtering out dirt, germs and virus But they don't filter out
radiation. If Honolulu were hit by a nuke I am about 300 miles away. Radiation contamination would be a concern. I don't want to drink radiated water.
Thanks Dennis.
Wouldn't running the water through a coffee filter (or two) remove pretty much all particulate matter? As was noted above and as far as I know, it's the particulate matter that's radioactive and not the water itself. Unless you're getting your water out of the pools inside a nuke plant.
Fairwillows
Where I am supposed to be.
watching this thread!
night driver
ESFP adrift in INTJ sea
Well, remember that if/when/once your water filter has cleaned the water it is going to be MUCH hotter than the water involved. Because you will have concentrated/gathered the radioactive particulates into one close place...
night driver
ESFP adrift in INTJ sea
And coffee filters are WOEFULLY incapable of joining this conversation.
I meant it not as a water filter but as a way of removing particulate matter before running it through a water filter.
1911user
Veteran Member
I looked at the filter you linked (interesting!) then followed with the standards it is tested to. (NSF/ANSI Standard 42 & 53)
This is how I would approach the filtering task. It's probably not as simple as you were hoping, but this is how I'd do it.
The first filter would be essentially plastic window screen material to remove larger things (leaves, bugs, twigs, grass clippings, etc.).
The second filter would be bulk (cheap) coffee filters held in a plastic funnel of some sort. This removes even smaller things that would speed clogging the good filters that come after this one. For a small, portable water filter (camping/hiking style), the coffee filter could be used to cover the filter inlet and held in place with a rubber band. They're cheap, have boxes of extras.
The third filter would be this combo Doulton ceramic then GAC charcoal filter. Specifically this one because I have a few: Emergency Siphon / Gravity Filters featuring Doulton Ceramic Cartridges – Pure Water Products, LLC . I had a thread on them and Shane (KI4U) designed the combination years ago; found it PREP - Emergency Water Filter (a.k.a. Berkey in a shoe box). This would be the last filter for normal use. A few spare GAC (charcoal) filters would be good to have. The GAC absorbs bad tastes, odors, and potentially chemical contaminants in the water.
The final filter would be the radiation filter pitcher you found (above) to be used only in a potential radiation environment. It would last longer by only filtering essentially clean water, but I'd have a replacement filter (or 3) just in case. This would only be needed for drinking and cooking water.
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night driver
ESFP adrift in INTJ sea
Remember the special storage requirements after the last filter (and each of the prior ones) have been used once or twice. Store a decent distance from where you are sheltering (decent being measured in yards [several at a minimum] and keep exposure to the intermediate filters to a MINIMUM [measured in minutes and seconds, not hours])
Milk filters are still available either as 24 inch "sock" type or 6" disks, and while you'd have to look into the specs (you'd think I'd know, but we tried to keep *really* clean cows, and rarely gave the filter a workout], but they (doubled) filter maple syrup cleaner of "sugar sand" than anything short of a good quality wool felt filter.
Summerthyme
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An alternative to coffee filters are the filters restaurants use to filter cooking oil in deep fat fryers, but they're more expensive than coffee filters. The filters use a metal frame in the form of an inverted cone that then sits on top of a pot (or something to catch the cleaned oil) and do a heck of a job removing all the junk that gets into deep fat fryers. There's a limit to how many times you can filter the same cooking oil, but the first few times that oil looks just as good as all-new cooking oil.
My point about using coffee filters (or cooking oil filters) is that they're so relatively cheap you can throw them away after a single use. If the particulates are radioactive, then that's exactly what you'd want to do anyway with any filter that filters and concentrates the particles.
My point about using coffee filters (or cooking oil filters) is that they're so relatively cheap you can throw them away after a single use. If the particulates are radioactive, then that's exactly what you'd want to do anyway with any filter that filters and concentrates the particles.
rob0126
Veteran Member
Since this is a water filter thread, I thought Id put this here.
3:36
View: https://youtu.be/lFtR1RnLpVA
I believe this would be good to clean up fresh rainwater.
Of course boiling the water is a good idea to be safe.
Use your own discretion.
3:36
I believe this would be good to clean up fresh rainwater.
Of course boiling the water is a good idea to be safe.
Use your own discretion.
SSTemplar
Veteran Member
What ever you are using for a water catchment I would have it at least 25 feet from my shelter. Put a good ceramic filter on whatever method you are going to use to get the water out of said catchment. Take to shelter and run through a Berkey. Check daily with a radiation detection devise of your choosing. Miminize time spent at the outside catchment and never bring the cloths you wore outside into your shelter. Make a space outside your living area where the person going outside can change clothes and check themselves with a radiation detection devise. Always remember Time Distance Shielding. Irradiated water would not worry me in an emergency. All water would go to the catchment first.
ShadowMan
Designated Grumpy Old Fart
So use what you found and make a TWO-STAGE filter system. Would you mind listing the two systems that you've found so far?
Suggestion: Which ever system has the finest filtration I would make that the second filter in line behind the other filter to keep from clogging the first screening filter.
funny,i just built a 2 5 gallon buckets with 4 ceramic filters and a secondary discharge charcoal filter water filter system,works great!
i have a well and the water is not perfect for drinking,it is now.
something like this but with 4 ceramic dome filters.
video is 10 minutes,it shows how to build your own water filter like a berkey.
View: https://www.youtube.com/watch?v=fyF2MggHNLc
i have a well and the water is not perfect for drinking,it is now.
something like this but with 4 ceramic dome filters.
video is 10 minutes,it shows how to build your own water filter like a berkey.
do the filters plug?
do they last long?
usmcpackrat
Veteran Member
Ummmm.....what makes you think you need to filter radiation from your groundwater?
Usually granulated carbon filtration in conjunction with reverse osmosis will remove most all contaminate.....arsenic depending on type needs to be converted to a different type before removal....but we need to know specifics about source water before proper recommendation could realistically be made.
Long term whole house off of a well?
Or run and gun?
Usually granulated carbon filtration in conjunction with reverse osmosis will remove most all contaminate.....arsenic depending on type needs to be converted to a different type before removal....but we need to know specifics about source water before proper recommendation could realistically be made.
Long term whole house off of a well?
Or run and gun?
Dobbin
Faithful Steed
Generally water cannot be "activated." It is the elements that water contains that can be "activated."
The "blue" color seen in nuclear plant spent fuel pools is the closest water comes to activation. Why the Water in a Nuclear Reactor Glows Blue
Radon gas in water CAN be a bad actor. Here in Cow Hampshire MANY people are finding their water has high concentration of dissolved Radon Gas which is a proven carcinogen. Owner's daughter has this problem at her house. The Federal permissible limits of Radon gas is like 2500 something - Owner's daughter has 25K something untreated. The solution for her is called a "Bubble-Up" unit which basically bubbles air through the water which combines with the radon and removes it. With treatment her radon level is only 25. Bubbles are apparently VERY effective for Radon gas. BUBBLE-UP INTERACTIVE RADON UNIT
Other have mentioned "demineralization" as a solution option - remove the dissolved elements in water and you remove any activated element. There is a problem with this in that if you as a human were to consume ONLY demineralized water - you would soon be dead because "ordinary" water contains dissolved elements that the human body needs. Drinking only demin water will "deplete" your body of essential minerals.
Owner's experience in power plants where demineralized water is required for the boilers is a case in point - demineralized water is one of the greatest SOLVENTS known to man and will effectively dissolve most ANYTHING - perhaps by small degrees (fortunate in the case of boilers) or larger degrees (Demin water CAN make a very fine cup of coffee Owner says.)
Charcoal filters will work - but eventually the charcoal will become "saturated" and will absorb no more of what you're looking to remove. One needs a way to "re-charge" (reactivate) a charcoal filter.
Owner has used a charcoal filter to remove hydrogen sulfide gas (rotten egg smell) from his water here on his farm. It works - but three days later the filter "breaks through" as the carbon filter becomes saturated with hydrogen sulfide. Owner's cost effective $olution was to remove the carbon filter, and let it "dry out" which releases the hydrogen sulfide gas too. The same two filters he says were used MORE than a year before they plugged on particulate.
I'm not sure drying out will release ionically captured non-gaseous molecular items in a carbon filter. It may be a job for a "new" charcoal filter filler.
The ground itself is one of the BEST filters - a property taken to practical (and controlled) use by most municipal water supplies with "sand" filters. The sand does need renewal periodically.
Dobbin
The "blue" color seen in nuclear plant spent fuel pools is the closest water comes to activation. Why the Water in a Nuclear Reactor Glows Blue
Radon gas in water CAN be a bad actor. Here in Cow Hampshire MANY people are finding their water has high concentration of dissolved Radon Gas which is a proven carcinogen. Owner's daughter has this problem at her house. The Federal permissible limits of Radon gas is like 2500 something - Owner's daughter has 25K something untreated. The solution for her is called a "Bubble-Up" unit which basically bubbles air through the water which combines with the radon and removes it. With treatment her radon level is only 25. Bubbles are apparently VERY effective for Radon gas. BUBBLE-UP INTERACTIVE RADON UNIT
Other have mentioned "demineralization" as a solution option - remove the dissolved elements in water and you remove any activated element. There is a problem with this in that if you as a human were to consume ONLY demineralized water - you would soon be dead because "ordinary" water contains dissolved elements that the human body needs. Drinking only demin water will "deplete" your body of essential minerals.
Owner's experience in power plants where demineralized water is required for the boilers is a case in point - demineralized water is one of the greatest SOLVENTS known to man and will effectively dissolve most ANYTHING - perhaps by small degrees (fortunate in the case of boilers) or larger degrees (Demin water CAN make a very fine cup of coffee Owner says.)
Charcoal filters will work - but eventually the charcoal will become "saturated" and will absorb no more of what you're looking to remove. One needs a way to "re-charge" (reactivate) a charcoal filter.
Owner has used a charcoal filter to remove hydrogen sulfide gas (rotten egg smell) from his water here on his farm. It works - but three days later the filter "breaks through" as the carbon filter becomes saturated with hydrogen sulfide. Owner's cost effective $olution was to remove the carbon filter, and let it "dry out" which releases the hydrogen sulfide gas too. The same two filters he says were used MORE than a year before they plugged on particulate.
I'm not sure drying out will release ionically captured non-gaseous molecular items in a carbon filter. It may be a job for a "new" charcoal filter filler.
The ground itself is one of the BEST filters - a property taken to practical (and controlled) use by most municipal water supplies with "sand" filters. The sand does need renewal periodically.
Dobbin
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I get water from an aquifer BUT it is pulled up by an electric pump and then treated in above ground tanks.
IF the power goes off the village will lose power to pump up the water. At that point we will catch water off the roof. We have a Berkey to filter that water after it is boiled and run thru a coffee filter. I guess at that point I will run it thru the above mentioned pitcher. Lots of steps to get a drink.
IF the power goes off the village will lose power to pump up the water. At that point we will catch water off the roof. We have a Berkey to filter that water after it is boiled and run thru a coffee filter. I guess at that point I will run it thru the above mentioned pitcher. Lots of steps to get a drink.
I don't know . I have yet to get one.
Belt and suspenders?
L.A.B.
Goodness before greatness.
Distillation. Next to nuking it from space, it’s the only way to be sure.
Pouring the condensed H2O over a charcoal filter will absorb any chemicals that did not out-gas in a un-vented system, thereby condensing with the steam.
I have a nice commercial distiller built in Canada. 115 volt.
During Y2K, my pet project was a 12 VDC model. Still have the prototype, running a fan off of the solar panel on top of the box that houses the condenser…
but will probably go with a different design using a T-fitting Off The All American Pressure Cooker for twin S-S coils housed in a cascade drip box full of proper sized beach sand and or crushed pumice supported by small mesh screen.
Instead of air alone as the medium of heat transfer, the water trickling down should speed up recovery of vapor to water.
My commercial distiller uses burnt coconut shells as the charcoal filtration / absorption part of the water polishing.
Pouring the condensed H2O over a charcoal filter will absorb any chemicals that did not out-gas in a un-vented system, thereby condensing with the steam.
I have a nice commercial distiller built in Canada. 115 volt.
During Y2K, my pet project was a 12 VDC model. Still have the prototype, running a fan off of the solar panel on top of the box that houses the condenser…
but will probably go with a different design using a T-fitting Off The All American Pressure Cooker for twin S-S coils housed in a cascade drip box full of proper sized beach sand and or crushed pumice supported by small mesh screen.
Instead of air alone as the medium of heat transfer, the water trickling down should speed up recovery of vapor to water.
My commercial distiller uses burnt coconut shells as the charcoal filtration / absorption part of the water polishing.
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Of course, assuming you have room the most obvious way is to simply store what you need inside your radiation-proof shelter, thereby removing the entire need for worrying about "radioactive water," over-reliance on filters, and the need for using scarce resources to boil it and exhaust waste gases during what is presumably a very delicate weeks-long relationship with your outside environment. Depending on storage methods that might even serve as extra shielding against radiation, although I gather you need quite a lot of water for any really useful shielding effect. I think the generally recommended one gallon per person per day of sheltering isn't realistic, so I'd bump it up to five gallons per person per day and even then there won't be much left in the way of personal hygiene (certainly not what most of us are used to in our regular daily lives).
I don't believe Berkey kills virus. We have "rood rats" that urinate on the roof and carry leptospirosis.
Many people and dogs have died from Leptospirosis.