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Very nice post. Lots of good info here.
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very nice
covers everything can this be made so that it doesnt archive? and just point everyone who asks about water here! |
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Originally Posted By _Matt_:
can this be made so that it doesnt archive? Done. |
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Thanks gents. If and when I can afford to do so, I would really like to write up a pictoral using many of these methods in the field, unfortunately this would require several hundred dollars worth of products, so it may take some time.
Also, because my experience has been with municipal water I left off a lot of the 'alternative' methods that I have been asked about in the past. These include silver -colloidal and dollars (dollars were once used to keep milk from going bad before refrigeration was common), grafefruit seed extract, eyes of newt, dragon farts, etc. Most of these methods are very poorly defined and typically have no quatitative dosage or success rates that I have been able to discover, so I leave them up to the users judgement. As it mentioned before, my goal is to make people educated shoppers and preppers, every family should tailor this to their own needs and pocket-books. |
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I was going to ask about silver as I understand the Romans used silver containers for their water. I mean a few silver dollars are easy to carry and pack.
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SCW, Excellent post once again. About a year ago you posted another essay on water treatment that was so informative that I saved it to my important documents file. Thanks for taking the time to share your knowedge. Any experience or opinion on the newer hollow fiber technology that are used in the Sawyer Fiters and MSR Hyperflow?
Full-Auto |
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Dragongoddess- Silver has been used for a very long time to control spoilage, I'm really surprised that information about it is so slim. Another effective technique that an old timer taught me way back before I ever went to college was using a copper Chore-Boy in the water storage. Not the copper plated junk the tweakers use, a real copper one. After several months (years??) his untreated well-water was still very good. Again, YMMV.
Originally Posted By Full-Auto:
SCW, Excellent post once again. About a year ago you posted another essay on water treatment that was so informative that I saved it to my important documents file. Thanks for taking the time to share your knowedge. Any experience or opinion on the newer hollow fiber technology that are used in the Sawyer Fiters and MSR Hyperflow? Full-Auto Thanks! Send me an email at shane.watson(at)ecislc.com and I'll send you the Word version that contains some other information as well. Regarding the hollow fiber technology, I'd have to say.....I'm probably familiar with it. There are not very many manufacturers of these parts but they carry all kinds of brand names. In municipal settings these (at least these type of filters) are used as MBR and SBR treatment, primarily for wastewater. Pretty cutting edge for the most part, although they are becoming much more common, and very reliable. I have not seen the Sawyer/MSR in person however. I just read the specs on it, they seem quite good (no carbon filter if that matters to you) and the MSR brand is good, so my gut feeling is that it would be a great filter. I REALLY appriciate people bringing up these products as I'm not around the small scale stuff, in fact I've left the water industry in general for a while. It's great to see all the stuff on the market. |
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Great post. Thanks for the info, SCW.
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Great info, thanks!
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Sugar-enriched flour, Partially Hydrogenated Vegetable Oil, Polysorbate 60, and Yellow Dye #5: Everything a growing boy needs.
Love and darkness and my sidearm كافر |
Excellent info. Thanks!
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"The M1 Rifle is the greatest battle implement ever devised." General George S. Patton Jr.,US Army
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SCW excellent info. Thanks for posting. I've save the infor to my survival folder. |
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Originally Posted By ireload:
SCW excellent info. Thanks for posting. I've save the infor to my survival folder. Thank you. If you send me an email I'll give you a Word document with all of the above (albeit better formatted) with a few pages of additional information that didn't make it in the post. shane.watson(AT)ecislc(DOT)com I have purchased a pretty fair amount of filters and other methods of treatment in the past few weeks, I hope to make a pictoral review of about 20 treatment methods in the spring. If anyone has a specific request please let me know. Shane |
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Great stuff!
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Proud Member of "Ranstad's Militia," The Fantastic Bastards
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Shane, thank you for taking the time to post such an informative thread for us. I was directed here by another ARFCOM'er when he read a question I had about using a MSR filter as a short to mid-term solution in my household should the need to be self-sufficient ever arrive.
Great post- thank you! |
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tag
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There is a guy.. a NAKED GUY WITH .. with.. with.. WITH A SPIDER ON HIS DICK!! There are PANTIES WITH SPIDERS CRAWLING OUT OF... THERE IS A SPIDER ON A ROLL OF TOILET PAPER!!-DrFrige
THE FUCKING PAIN, I JUST GAVE BIRTH THROUGH MY PENIS. -Hemi-Cuda |
thanks for the info
just printed off |
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Lorcin .38 Revolver
Sears .22 Bolt Action Rifle |
Originally Posted By 9mmCarbine:
Shane, thank you for taking the time to post such an informative thread for us. I was directed here by another ARFCOM'er when he read a question I had about using a MSR filter as a short to mid-term solution in my household should the need to be self-sufficient ever arrive. Great post- thank you! You are very welcome. As I said, I did this for my a prepardness seminar for my church and I figured it would be well recieved here as well. Originally Posted By molotov357:
thanks for the info just printed off Don't print that crap! The formatting sucks and it's missing an entire table on advantages and disadvantages of a everything discussed. It's also missing design info on a sand filter that can treat water completely without chemicals. Send me an email and I'll send it to you, mucho better. shane.watson(at)ecislc(dot)com EDIT- At the suggestion of a fellow ArfCommer, I have posted the document to Google Documents, the formatting is much better and all the text is there, but I don't know how well it will print/download. Here it is, if it's not doing well let me know and I'll just email the document. WATER DOCUMENT HERE |
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I tried printing the Google Doc to a PDF file and it's screwing up the spacing. Would like to get the Word document if possible.
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There is a guy.. a NAKED GUY WITH .. with.. with.. WITH A SPIDER ON HIS DICK!! There are PANTIES WITH SPIDERS CRAWLING OUT OF... THERE IS A SPIDER ON A ROLL OF TOILET PAPER!!-DrFrige
THE FUCKING PAIN, I JUST GAVE BIRTH THROUGH MY PENIS. -Hemi-Cuda |
Thank you SCW, well done!
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It is best to prepare for the days of necessity
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Originally Posted By Torqued:
I tried printing the Google Doc to a PDF file and it's screwing up the spacing. Would like to get the Word document if possible. Get it quick, because of the Utes win over Alabama I'm offering a one-time get one-get one free. It looked like the drawing is not getting through very well either. I had a hell of a time getting that drawing to print well in my paper copies. It's just an AutoCAD .dwg FCOL. |
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Prolonged drinking of distilled water will cause nothing.
But then what the fuck do I know, I've been drinking distilled water now for 15 years straight. There are a lot of mis-conceptions in that write up but, whatever, my opinion. |
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Experience is a horrible teacher because it usually gives the test before the lesson.
Veteran of Operations: Praying Mantis, Sharp Edge, Just Cause, Desert Shield/Storm. |
Originally Posted By JarheadChiro:
Prolonged drinking of distilled water while cause nothing. But then what the fuck do I know, I've been drinking distilled water now for 15 years straight. That just means you are getting your minerals from other sources, probably veggies. Most people get most of their minerals from their water, RO and distilled are distincly lacking. Municipal systems that use RO treatment are required to replace minerals to a certain level to ensure people don't wash themselves too clean of them, it's a real risk for a percentage (nearly 100%) of the population. Good luck.... |
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Originally Posted By SCW:
Originally Posted By JarheadChiro:
Prolonged drinking of distilled water while cause nothing. But then what the fuck do I know, I've been drinking distilled water now for 15 years straight. That just means you are getting your minerals from other sources, probably veggies. Most people get most of their minerals from their water, RO and distilled are distincly lacking. Municipal systems that use RO treatment are required to replace minerals to a certain level to ensure people don't wash themselves too clean of them, it's a real risk for a percentage (nearly 100%) of the population. Good luck.... For what it's worth I'm a Doc, and have researched this and written articles that have been published on water. My undergrad degree is in Nutrition. This washing thing you talk of is bullshit. The body stores minerals in the bones and can liberate some if needed. There are two forms of minerals, organic and inorganic. Inorganic minerals refers to non-vegetable or non-animal matter, i.e. not living. This includes carbonate and lime compounds, calcium, iron and magnesium. Because these components are non-living, our bodies can no make use of these minerals and our cells reject them. The result of ingesting these minerals is an accumulation of debris in our bodies. Organic minerals living and are found in vegetables, fruit, seeds, grains, meats, and nuts. These are easily assimilated by our cells and are essential for good health. If your rely on water as the source of your required minerals, you are sadly lacking. The minerals in water are inorganic, and the body cannot make use of them. The body continually assimilates the much needed minerals from the food we eat. Arguing with know it all's in this forum is why I rarely post here anymore. Maybe I should just go away. |
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Experience is a horrible teacher because it usually gives the test before the lesson.
Veteran of Operations: Praying Mantis, Sharp Edge, Just Cause, Desert Shield/Storm. |
Originally Posted By SCW:
Originally Posted By JarheadChiro:
Prolonged drinking of distilled water while cause nothing. But then what the fuck do I know, I've been drinking distilled water now for 15 years straight. That just means you are getting your minerals from other sources, probably veggies. Most people get most of their minerals from their water, RO and distilled are distincly lacking. Municipal systems that use RO treatment are required to replace minerals to a certain level to ensure people don't wash themselves too clean of them, it's a real risk for a percentage (nearly 100%) of the population. Good luck.... I drank distilled water for two years straight at an earlier time in my life. Presently, I have an RO unit under the kitchen sink for drinking water and cooking which is down stream of a bacteriostatic water softener originally designed by Ionics. I'm still here and functioning fine |
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"Faith is the great cop-out, the great excuse to evade the need to think and evaluate evidence. Faith is belief in spite of, even perhaps because of, the lack of evidence."
- Richard Dawkins |
Originally Posted By JarheadChiro:
For what it's worth I'm a Doc, and have researched this and written articles that have been published on water. My undergrad degree is in Nutrition. This washing thing you talk of is bullshit. The body stores minerals in the bones and can liberate some if needed. There are two forms of minerals, organic and inorganic. Inorganic minerals refers to non-vegetable or non-animal matter, i.e. not living. This includes carbonate and lime compounds, calcium, iron and magnesium. Because these components are non-living, our bodies can no make use of these minerals and our cells reject them. The result of ingesting these minerals is an accumulation of debris in our bodies. Organic minerals living and are found in vegetables, fruit, seeds, grains, meats, and nuts. These are easily assimilated by our cells and are essential for good health. If your rely on water as the source of your required minerals, you are sadly lacking. The minerals in water are inorganic, and the body cannot make use of them. The body continually assimilates the much needed minerals from the food we eat. Arguing with know it all's in this forum is why I rarely post here anymore. Maybe I should just go away. Interesting. Dispite your abrasive post, I'll make the same offer to you that I have made to everyone I've given the text to thus far. If you see any problems or corrections, let me know. Municipal water system are given a requirement for minerals in the water after treatment with RO, we do this for two purposes. 1- Straight RO/Distilled water is pretty caustic. It can eat through pipes and fittings pretty quickly as it tries to come to a more natural balance. 2- Health reasons as mentioned. So- Given that we are a bunch of engineers who treat water to a specific standard, I don't know or study the medical side at all. Not my job, I just treat water to a standard. Could the standard be in error? You bet, it wouldn't be the first nor the last time policy has been made based on B.S. political motivations or simply wrong ideas. "I've been doing it for 15 years" is NEVER an acceptable reason to validate anything, but if you can provide some additional information Im more than willing to learn something new. I've had quite a few people ask about this specific issue and my fallback position is always the water quality standards. I'd be more that happy to make it more correct based on further info if provided. Thanks- |
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SCW - question...
For general poop hitting the fan / couple days in the mountains ... would you recommend the MSR Miniworks or the MSR Miox Pen? After reading this thread a while ago studied up on the Miox Pen and it worked, but had mixed reviews in practical usage (some people don't like relying on batteries and so on). The concern people had with the Miox pen were these: - Taste (some said had a taste, some didn't) - Time to disinfect (up to 4 hours) - If the water has lots of particles in it or is cloudy (turbid?), this can be a haven for organisms that are not reached with Mixed Oxidants ... so should be used with a pre filter. I have some SureFire lights so I got around 40-50 SF CR123 batteries. Don't really care about taste if survival is an issue ... but the turbid water thing is a concern. The MSR miniworks had a ton of good reviews; however ... Filters can clog too ... so neither is perfect. Just wanted your opinion. |
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Originally Posted By molotov357:
thanks for the info just printed off Plus 1 |
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Originally Posted By Fooboy:
SCW - question... For general poop hitting the fan / couple days in the mountains ... would you recommend the MSR Miniworks or the MSR Miox Pen? After reading this thread a while ago studied up on the Miox Pen and it worked, but had mixed reviews in practical usage (some people don't like relying on batteries and so on). The concern people had with the Miox pen were these: - Taste (some said had a taste, some didn't) - Time to disinfect (up to 4 hours) - If the water has lots of particles in it or is cloudy (turbid?), this can be a haven for organisms that are not reached with Mixed Oxidants ... so should be used with a pre filter. I have some SureFire lights so I got around 40-50 SF CR123 batteries. Don't really care about taste if survival is an issue ... but the turbid water thing is a concern. The MSR miniworks had a ton of good reviews; however ... Filters can clog too ... so neither is perfect. Just wanted your opinion. I got your email, otherwise it probably would have taken me weeks to find this! I ALWAYS filter first. There is a potential for the organizms in water to be shielded/shrouded by stuff in the water, especially clay particles. The larger the particles makes it more likely for the organisms to be shrouded, but it also makes it easier to filter out the particles. Again, filtering first will also effectively lower the required contact time for a MIOX system, if you have filtered correctly there shouldn't be any cycsts left in the water, therefore you should be pretty good with a MUCH shorter contact time. In short, both the filter and the disinfectant are required for complete treatment. Do you really need the MIOX? Most of the time not but it's great for the what-if situations. If you are just in the market for one, get the filter. Later you can get a replacement filter cartridge or two for the filter. Then maybe get the MIOX, that's where I'd rank the importance. MIOX is only important when you are concerned about human-borne issues in the water, like raw sewage. Even in that case you'd want to filter it first. |
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I spent a lot of years designing water treatment equipment - mostly very high purity stuff (like for washing semiconductors). I can assure you that very pure water is somewhat corrosive. Water is a very good solvent, and it wants to dissolve things. It will even dissolve stuff like stainless steel to a certain extent. Plastics of some kind work best.
I have heard, but cannot confirm an earlier poster's claim that RO water is required to have a certain level of mineral replenishment when used in municipal supplies. Not sure why, but suspect it is an attempt to protect piping systems as much as anything. It may also be to reduce the amount of lead from lead soldered copper pipes that dissolves into the water. I have also heard the thing about it leaching minerals from your body if you drink it. Cannot confirm or deny that. But a lot of RO treated water is sold as drinking water, and no mention of adding minerals back into it. You want some amazing coffee? Get yourself a coffee filter and some ground coffee and pour some very pure (like 18+ MOhm) water through it and then heat that up in a microwave. |
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Originally Posted By ilbob:
But a lot of RO treated water is sold as drinking water, and no mention of adding minerals back into it. We were told of pure water being corrosive to systems when I was in school, but we never designed around in when I was in the industry, probably because we never really got 'pure' water. The only large-scale RO plant I know of in the state mixes with conventially treated water at about a 30% RO to 70% conventional ratio- but that's mostly due to the high cost of RO treatment compared to the required amount of water. It's also part of a settlement with a local mine in regards to their impact on the water supply, so a lot of issues beyond the actual minerals. With regards to bottled drinking water, just remember there are no (NO!!) standards for bottled water. I find that strainght RO water tastes kinda flat and many bottled water brands have added minerals for taste. I'd love to try the coffee, but in the microwave? I've never liked microwave coffee, and it seems to get cold faster (or am I just nuts?). |
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While I don't have a need to wash semi-conductors I would like to RO my new surface water when it arrives.
As the Home Depot type is ineffective, what or where do I want? where to go? Any links appreciated Just lookin' for drinking water and plumbing to the ice maker, not needed for the whole house thanks (great write up BTW) |
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Originally Posted By BigRedDog:
While I don't have a need to wash semi-conductors I would like to RO my new surface water when it arrives. As the Home Depot type is ineffective, what or where do I want? where to go? Any links appreciated Just lookin' for drinking water and plumbing to the ice maker, not needed for the whole house thanks (great write up BTW) The HD/Lowes RO units are not 'ineffective', just not really RO. If you get a unit from the box store make sure it includes (or at least requires) a pressure tank and waste drain, plan on spending several hundred dollars. Also, this will still not be a true RO system that filters water on a molecular level, but it will be *pretty good*- about like a backpacking filter. |
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I found this a couple of years ago
filter making Is a true RO unit not affordable? I would like to get something that truely does a good job. |
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Cool post. Tack it.
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"Any society that will give up a little liberty to gain a little security deserve neither and will lose both."
-Ben Franklin |
Originally Posted By BigRedDog:
I found this a couple of years ago filter making Is a true RO unit not affordable? I would like to get something that truely does a good job. Not really needed or affordable for home use, I'm not really sure if you can get one that small, but I would imagine there are unit out there. Why do you want that level of treatment? Send an email to shane.watson(at)ecislc(dot)com and I'll give you a document with a similar design as what you posted. It uses a 55gal drum rather than a concrete case, but same principle. |
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SWC,
Thanks for the reply. One more question. IF I end up getting the miox, what is a practical / sustainable way to prefilter the water for particulates? For example, I read a Millbank filter would pair nicely with a miox - and from what I understand - its just a mesh bag you roll up / reuse and lets the water drain out the bottom. like - could you use a coffee filter to prefilter for a miox? |
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For those wanting to treat larger quantities of water, here's a discussion about how to apply RO filtering at relatively low cost, without the tank [which is only used in normal installations as an 'accumulator' for convenience filling up a gallon or so container quickly -and isn't necessary]. My SO is filling up our storage bottles as I write this w/o a tank.
Low membrane differential pressures -obtainable by siphoning with a head of 15 feet or better, work fine but with a reduced thruput. The RO elements in the box store kits are true RO membranes. The box stores do have simple charcoal/carbon block filters, I'm not referring to those. The cost of setting up a small portable system can be kept below $75 with careful shopping. I posted a few days about RO systems at Lowes being on sale for IIRC $117 or maybe $147. A few months ago, Sam's had a clearance of true RO systems [I posted about it here] for about $80 IIRC and I stocked up. http://www.ar15.com/forums/topic.html?b=10&f=17&t=577038 |
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You have mail SCW. Thanks for the good info.
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Originally Posted By Fooboy:
SWC, Thanks for the reply. One more question. IF I end up getting the miox, what is a practical / sustainable way to prefilter the water for particulates? For example, I read a Millbank filter would pair nicely with a miox - and from what I understand - its just a mesh bag you roll up / reuse and lets the water drain out the bottom. like - could you use a coffee filter to prefilter for a miox? A coffee filter is about 15 microns, so it's going to let a LOT of stuff through. Like almost everything that's not stuck to a big chunk of dirt or moss. I'd never seen the Millbank bag until I looked it up after reading your post, but to some extent a filter is a filter is a filter. Look at the pore size and then just make a judgement about which particular brand/construction suits your purposes best. I use an MSR Sweetwater for hunting/camping type stuff, and I have ceramic filters like a Berkey, two of the Monolithic ceramic filters, a Sawyer and I don't know what else. They all have plusses and minuses. MIOX just does a VERY nice job of batting clean-up in my opinion, and it will also hit the grand slam when you need it to- given the right conditions. By that I mean it's the only one I'd trust if I had no way to filter, but I'd much rather filter first. |
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Originally Posted By EXPY37:
For those wanting to treat larger quantities of water, here's a discussion about how to apply RO filtering at relatively low cost, without the tank [which is only used in normal installations as an 'accumulator' for convenience filling up a gallon or so container quickly -and isn't necessary]. My SO is filling up our storage bottles as I write this w/o a tank. Low membrane differential pressures -obtainable by siphoning with a head of 15 feet or better, work fine but with a reduced thruput. The RO elements in the box store kits are true RO membranes. The box stores do have simple charcoal/carbon block filters, I'm not referring to those. The cost of setting up a small portable system can be kept below $75 with careful shopping. I posted a few days about RO systems at Lowes being on sale for IIRC $117 or maybe $147. A few months ago, Sam's had a clearance of true RO systems [I posted about it here] for about $80 IIRC and I stocked up. http://www.ar15.com/forums/topic.html?b=10&f=17&t=577038 Yep. I actually wanted to include much of the work that EXPY37 had done here, but it was getting kinda long and dry (pardon the pun) so much of this got clipped from my document. The RO systems from HD/Lowes/Wal-Mart are not true RO- but that's OK. You (usually) don't need *true* RO, just clean water. I actually don't have this set-up myself but it is a perfectly valid way to treat your water- usually to a half micron or a little larger, like a good backpacking filter only faster, easier and with the ability to treat a lot more water volume over the life of the filter(s). The cleaner the source water the better, faster and longer these filters will work- like any other filter. Again, if you are worried about human-borne viruses or really nasty stuff in the water, you will want to disinfect after filtering. I've never encountered that condition yet. I would consider this a problem on safari in Africa, in a flood where the water supply has been compromised or camping where again, the water supply has been compromised with poor sanitation. For clarification, RO is a membrane where the pore size is about 1.5 times the size of a water molecule. Because the fabric is hydrophylic, the water hugs the fabric along the face of the filter, and around the corner into the pore 'tunnel' (remember on a microscopic scale the pore will look like a tunnel to the water molecule). As the water hugs the fabric, it pushes any particles/molecules that are not water away from the fabric such that even though a (for example) salt molecule might fit in the pore space, it can't get into the tunnel when the water keeps bumping it back out. An RO system must waste about 50% of it's flow to properly get rid of the non-water molecules that are being pumped out. Any system without a waste is either letting everything get through, or letting the crud plug up the filter. Most home filter systems operate very similar to this, only because RO requires a lot of pressure, they open up the pore size a lot more and use the buzz-work Reverse Osmosis to sell it. The pressure canisters required to hold RO filters become expensive, as well as building the pressure required to get the water through the very tight popre size. Not only that, but most of the time we really don't need that level of treatment anyway. |
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Here's an illustrative diagram relating particle size to various common materials. Note the bottom scale is conveniently defined in microns, directly relating to measurements we're already familiar with ––for hiking, Berky, ceramic, the new Sawyer filters, reverse osmosis, etc.
Note that the RO filter is on the far left of the chart and the far right relates to coarse sand as a filter media. A pin "point is about 80 microns and viruses can to be as small as .002 microns according to the chart. An RO filter pore diameter approches the the radius of an atom. Pretty danged small. A sugar molecule is at the limit of being passed by an RO membrane, of which there are several kinds of membranes designed for different applications. Processing brackish water requires pressures around 350 psi for efficient flow because of the type of membrane used, non-brackish water can be processed at around 40 psi, and as I have reported, at a considerably lower pressure albeit with much less flow. Interestingly, the hollow fiber filter membrane that is used in the new hi perf Sawyer filter, being discussed in another thread, appears to be another form of a reverse osmosis 'membrane'. The 10 inch standard RO membrane cartridge used in household RO installations can be purchased in various flow rates and in several materials depending on your specific application. They are available in 20 inch and larger sizes for institutional use. Here's one similar to the one we're using at our location, it has a pore size of .001 micron [not too much smaller than the high performance Sawyer hollow fiber filter and it's designed to be tolerent to chlorine.] Note that the price is a complete ripoff for uninformed consumers. http://www.advancedwaterfilters.com/filter-products/reverse-osmosis-membrane-cta.html This chart is handy to print out and refer to in discussions of different kinds of filters especially when making a decision which is best for your needs. Temperature of the membrane is directly related to the flow efficiency. Also note the difference between "suspended" contaminants and "dissolved" contaminents. Dissolved contaminants won't be filtered out by ceramic and larger pore sized filters. Generally you have to use RO to remove dissolved substances at the atomic/molecular level. A carbon block filter inline to other stages works well to adsorb some dissolved materials. ETA One last issue. There are reports of bacteria being able to "grow through" the pores of some small pore filters. Filters that are used occasionally seem to have the problem, filters that are in constant use are reported to be less susceptible. Chlorine treatment of the input supposedly kills the bacteria. |
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Lowes has Reverse Osmosis kits on sale for under $150. Not that great of a price but something to look at.
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Originally Posted By BigRedDog:
While I don't have a need to wash semi-conductors I would like to RO my new surface water when it arrives. As the Home Depot type is ineffective, what or where do I want? where to go? Any links appreciated Just lookin' for drinking water and plumbing to the ice maker, not needed for the whole house thanks (great write up BTW) BRD, why are you thinking HD RO filters are ineffective? They certainly are effective. But there are better prices elsewhere for essentially the same thing. See my thread on RO. |
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Tagged. Excellent post.
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"There is a river whose streams make glad the city of God, the holy place where the Most High dwells." Ps. 46:4
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The RO units sold at lowes, etc are indeed RO units.
because they operate at low pressures, they have some design compromises. one of them is they don't have the recovery rate a higher pressure RO has. they also have to be able to deal with the relatively high level of hardness they may see from well water, so that also pushes them toward low rates of recovery. |
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bump!
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I got a lot out of this thread so I'm bumping it again.
Btw - I got a MSR miniworks and a camelbak filter adapter so I can remove the bite valve and reverse fill my camelbak without having to unscrew it. I may add a siltstopper to the inlet to extend the life of the filter - maybe not. I hear if you put one of those on you don't end up needing to clean the ceramic filter nearly at all. |
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Any suggestions for using my well water in an emergency? The situation is that even if I can get some water out of the well (method irrelevant right now), I'm next door to a golf course and I expect the water to be FULL of chemicals/pesticides, etc. Is there a practical method to make such water useable in an emergency (either short term or long term)? I get the sense that charcoal filtration isn't going to work as well as I'd like.
Berkley filter or something else? |
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This is an excellent thread. I think a lot of people overlook the importance of water in a catastrophic event.
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Bump, nice info!
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