Part 1 Theory of Reverse Osmosis units and how to optimize p

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  • @bobdobb1088
    @bobdobb1088 12 років тому

    I think the guy is clear, and he's helped me understand the process. This is my first youtube stop in figuring out how to clean 3rd world water, and he's helped! Sometimes people explain a process simply as an exercise in organizing thoughts, just as many people write a personal journal for the same purpose, but in this case he's also helping.

  • @DelHollowProductions
    @DelHollowProductions  16 років тому

    yes. In fact there are mechanical shut-off available to control the thing when satisfied.
    The system is differential pressure driven. In this example, small electric pump was used to elevate the pressure (creating a larger delta-P) but as long as the necessary pressure difference exists across the membrane, it will produce water. The greater the difference, the greater the production.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    Thank you. Many places in the word don't have fresh water. RO systems can't handle all hazards such as radon gas but they are often effective with many others.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    The pressurized tank & pipe diameters provide the flow rate. Assuming the piping doesn't change, to increase flow you must increase pressure (which it does) - the moving brine provides the work. The brine pump is a slave to system pressure whether boosted or not
    If water is drawn-down faster than it is made for long enough, it will deplete the storage (usable water) w/in the tank. Water will remain but there won't be any air pressure to push it out (i.e the diaphragm or bladder tank function).

  • @fishisrael5601
    @fishisrael5601 11 років тому

    this is really very important video for academic and application intent, thank you very much

  • @prolodyne
    @prolodyne 15 років тому

    Very informative video, thanks. I don't understand how pressure is maintained at the taps though surely the brine-driven pump cannot maintain the flowrate you demonstrate in the later video? Does the big gray tank contain a rubber diaphram or something to maintain system pressure? Thanks for any further info.

  • @DelHollowProductions
    @DelHollowProductions  13 років тому

    @cabadejo - I don't but wherever you source the membrane should have a pressure-volume chart. If they don't (retailer), the manufacturer should. Then it is is a game of differential INs and OUTs. A close approximation can be done with averages.

  • @PIAK_08
    @PIAK_08 11 років тому

    Thank you so much for uploading this video... at least now i have an idea how the system works... thank you...
    from Philippines..

  • @DelHollowProductions
    @DelHollowProductions  14 років тому

    RO can leave gasses, distillation can be rather inexact since not every molecule in the steam is exactly 213 deg F so sometimes both can drag miniscule amounts of contaminants. Distallation can only go so far depending on what you are separating - i.e. PGA (5% remaining). Rain, on the other hand, is dirty when it falls (i.e. hail seeds, washing pollen, acid rain, etc.) - jmo

  • @jaymzcee
    @jaymzcee 11 років тому

    I found this informative, and answered some questions I had. Thank You.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    The concentrations to be removed in desalination (like onboard Naval vessels) are so significantly high multistaging is necessary.
    Desalination of low levels of contaminants in water sources qualifying as "fresh water" or even "brackish" are still effectively desalinated. RO systems can desalinate quite effectively without over complicating the issue.
    You don't generally need a shotgun to kill a fly right? But use one where appropriate.

  • @pozionmynd
    @pozionmynd 12 років тому

    sounds fine to me in Australia... i actually like his voice., keeps me listening.

  • @DelHollowProductions
    @DelHollowProductions  14 років тому

    @f0xstrike _ it isn't unusual to add calcium back in big operations, it is just another stage. You can see it in some bottled water labels. RO water can be aggressive attempting to reach its natural state of being.

  • @garryclelland4481
    @garryclelland4481 11 років тому

    Thanks for posting this , clear and very informative .

  • @thestar13
    @thestar13 16 років тому

    Nice video, I had a quick question about what you use for your animation in your videos, is it microsoft paint or do you have a special software

  • @nandmanimations
    @nandmanimations 13 років тому

    Hello. I started watching some of your videos and what started as a way to learn how to modify my RO system has now become an ambition to be more like you.
    My question is the rotating valve that leaks out the brine and maintains the pressure within the brine part. Could that simply be a valve that is open just a small amount or is that a special rotating valve as you described?

  • @DelHollowProductions
    @DelHollowProductions  14 років тому

    @serch142 - water is never wasted. It recycles. It isn't like we need to take a chemical solvent to remove a heavy metal and yield an aqueous solution full of carcinogens. Yes, the brine goes down the drain. Mine waters the lawn via the field lines. Even then, it is a relatively small amount.
    A more meaningful question isn't how much water is "wasted" to make pure drinking water but how much toxic waste and land-fill is produced making bottled water -or - how many gals are wasted washing cars?

  • @burchified
    @burchified 14 років тому

    What about fluoride and prescription medication residue present in city water supplies?

  • @DelHollowProductions
    @DelHollowProductions  12 років тому

    A salt has a specific inorganic definition. They work off an ion exchange when salt is added. If 100 pounds of sodium chloride is disolved and injected into the water, all of the elements remain. Sure the ion exchange ocurrs, but molecular sodium has been added and remains none the less.

  • @Kumlla
    @Kumlla 11 років тому +1

    REALLY NICE PRESENTATION, TANX

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    It is hard to say but an air gap is to a drain and what you are draining is brine (i.e. water off the membrane with concentrated minerals). It seems possible the little drain has gunked up on you (maybe).
    Lasting... depends on the GPD rating to start with and how mineral-ed up your source is. What happens on a microscopic scale is it plugs up just like your air filter in the car or house. Your GPD will drop. When it quits keeping up with your demand - replace it.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    When I was a child growing up I recall my toothpaste had stannous (tin) fluoride. Now it contains sodium fluoride. I don't know where this "66%" statistic comes from nor do I wish to contribute to debate but when I worked at a utility district, we injected hydrofluoric acid (the same stuff people use to etch/frost drinking glasses) into the supply as the source of fluorine. I don't know much, but I think it wise to know specifically what form is in debate.

  • @DelHollowProductions
    @DelHollowProductions  12 років тому

    Quite often in elementary electronics/electrical classes water is used to explain electron and current flow.

  • @montmib
    @montmib 11 років тому

    Hi, Very interesting type of way to purify water. I'm a teacher and I'm actually teaching students ways to purify the water. I have a question for you. What is the material used as a membrane between the two tanks of water? Thank you

  • @nickpiperata
    @nickpiperata 12 років тому

    Hello Sir. Say if I move to the beach. In basic terms, if I throw a hose into the ocean and pump it through a RO system, will it be potable? Will it be safe to drink and wash?

  • @aceldama99
    @aceldama99 11 років тому

    Is that why when you boil softened water there's salt left at the end? I used to install these water softening systems so I have a tiny idea about how it works haha...

  • @montmib
    @montmib 11 років тому

    Do you know how heavy metals such as mercury are taken away in the water treatment ? Or in a normal city plant to purify water ?

  • @Sparkydrums
    @Sparkydrums 15 років тому

    I have a question, my faucet air gap hole is leaking water. Is it because my return line is clogged? And how long can these unit's last? Thank's.

  • @jws54
    @jws54 16 років тому

    could this be done with no electricity as in the high side could be loaded from a water tank and create a self running unit drivn by water power only fed by gravity?

  • @serendipitousingh
    @serendipitousingh 11 років тому

    Can you pls recommend a good company in the UK from whom the whole house RO system can be bought? Also if i have one installed what shud i do with the scale build up i currently have? Roughly how much shud i be looking to pay for a two bed house with 2 sinks and a shower / bath?? thanks bud

  • @jcs1492
    @jcs1492 14 років тому

    Can you have two storage tanks (small 4.8gal) instead of a large one ?

  • @DelHollowProductions
    @DelHollowProductions  16 років тому

    I have shot part 2 (inside the house and it is definitely home made). Membranes are commercially available. It is too long for one shot, probably boring to most folks and I just have not rendered/uploaded it yet.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    What do you mean by "MSF"?

  • @Quy4life
    @Quy4life 14 років тому

    hi, i have the RO system installed for over two years and recently i turned on my faucet, the filtered water came out blue/violet. Does that mean i need to replace my RO membrane or the cartridges down to the filters?

  • @Number1Techguru
    @Number1Techguru 13 років тому

    @ridel149 does it remove all chemicals?

  • @MrSeth166
    @MrSeth166 12 років тому

    How much water is wasted on a 1 gallon of water filtered thru a Reverse Osmosis System?

  • @DelHollowProductions
    @DelHollowProductions  16 років тому

    An old version of Adobe Photoshop 4 that came with a Microtec scanner about 15-16 years ago.

  • @rainbowsalads
    @rainbowsalads 14 років тому

    hi i am looking to buy a 5 stage RO unit and am wondering why the 5th stage filter is a carbon filter ,when the 4th filter before it should have removed all contaminants ?
    anyone have an ideas why?

  • @DelHollowProductions
    @DelHollowProductions  13 років тому

    @Number1Techguru - I don't think so. "All" is a very bis word. Water and some gas molecules fit through the membrane so no. It is good with big stuff like salt, calcium, etc.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    I don't believe there is any basis in fact in that opinion. Left alone for long periods of time, deminerailzed water in copper or iron pipe, for example can be a bit aggressive but to suggest the same effect exist from human bones when the water would have to bypass the digestive system, the tissues therein and seek-out the bones seems quite silly.
    Demineralized water is sold when made by distillation and RO in drink bottles - think, have you ever seen a warning label?

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    With respects, there is nothing wrong with drinking distilled water. Nothing at all.
    However, I will respect your choice to avoid it if you choose and a personal choice for one of the boundaries of your own value system.
    Randal

  • @tehNewbie
    @tehNewbie 11 років тому

    Very informative. Thanks alot

  • @DelHollowProductions
    @DelHollowProductions  12 років тому

    Thank you. I was born at the RAF base Mildenhall England.

  • @DelHollowProductions
    @DelHollowProductions  14 років тому

    @Quy4life I don't know. Two years is a long time. No way to know how many gallons processed. No idea about color. It couldn't hurt. Lines may need changing. May be infected with an organism. I don't know.

  • @rosekibechu1238
    @rosekibechu1238 12 років тому

    Sounds great

  • @vacagonzalo
    @vacagonzalo 11 років тому

    Thanks for the info!

  • @f0xstrike
    @f0xstrike 14 років тому

    Hi, what is your opinion on this RO system that claims to provide re-mineralized water, and therefore a higher PH, I can't put the link in here, but it's from a company called Santevia (santevia dot com) Santevia Enhanced pH R.O. Water System
    You seem to be very knowledgeable on this subject, and your view on this system would be greatly appreciated!!

  • @LuVlAzUr
    @LuVlAzUr 14 років тому

    thank you for this video :) it's very useful ;)

  • @boneheaders
    @boneheaders 11 років тому

    Reverse osmosis does remove a majority of the sodium fluoride, but not all of it.

  • @thelamb777
    @thelamb777 15 років тому

    He's obviously speaking about the form of flouride that is contained within 66% of the United States' water supply...Solid form I suppose...And frankly, all I care about is the flouride being extracted out, that's probably the most desecrating heavy metal additive in our water supply as for the current moment (speaking for 66% of us)...

  • @DelHollowProductions
    @DelHollowProductions  14 років тому

    @jcs1492 - I don't see why not.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    I am not belittling the worry or concern anyone may have for literally God only knows what is floating in most public water supplies nor am I skirting the original question. RO membranes are very good a rejecting so many large contaminants but they do not reject everything.
    Distillation is another process that removes/separates water but it is expensive and quite the energy hog.

  • @DelHollowProductions
    @DelHollowProductions  15 років тому

    Clicking on some of these search links can mislead people. For as good as the Internet is at providing information, some accurate & true, some true in context but misleading out of context & other outright false, it is up to the consumer to filter through it (no RO pun intended).
    Back to the original point, each membrane has a rating based not only one differential pressures & yield but on rejection/size.
    I see a lot of DOW Chemical Filmtec membrane material being used to produce cartridges

  • @DarkJusticeZ
    @DarkJusticeZ 10 років тому

    THANKS SOOO MUCH!!!!!!

  • @truth6600
    @truth6600 3 роки тому

    First a softener should be used the ion exchange can be done without salt, secondly your ro will be pre filtered making it work better last longer, third you should add a post ph enhanced filter because ro water is of low ph. and all minerals are stripped.

    • @DelHollowProductions
      @DelHollowProductions  3 роки тому

      No. There are gimics of electrically charging but it is not softening unless you ion exchange - genuinely ion exchange. There are products making such claims but only salt exchange is AWA recognized.

    • @truth6600
      @truth6600 3 роки тому

      @@DelHollowProductions potassium can work for ion exchange, i sell it under brand name K Life.

    • @DelHollowProductions
      @DelHollowProductions  3 роки тому

      Mark - do you know what a "salt" is?

    • @truth6600
      @truth6600 3 роки тому

      @@DelHollowProductions sodium chloride.

    • @truth6600
      @truth6600 3 роки тому

      @@DelHollowProductions sodium chloride.

  • @mef1975
    @mef1975 9 років тому

    All I ever need to do is drink lots of water and that optimizes my "p" really well.

  • @mybluemars
    @mybluemars 12 років тому

    11 people have had their brains go through Reverse Osmosis.

  • @SuperKare123
    @SuperKare123 14 років тому

    Thanks=)

  • @MazMizo
    @MazMizo 14 років тому

    thx a lot... nice :)

  • @MazMizo
    @MazMizo 14 років тому

    nice

  • @BrainBUG1231
    @BrainBUG1231 13 років тому

    The guys sounds like he gives a damn about what he's explaining.

  • @prolodyne
    @prolodyne 15 років тому

    Ah I see, thank you

  • @naylattsoee6971
    @naylattsoee6971 12 років тому

    @oomblikkies k

  • @naylattsoee6971
    @naylattsoee6971 12 років тому

    @SkyDaves

  • @DelHollowProductions
    @DelHollowProductions  12 років тому

    With respect and correction, this is in plain English. I can explian it to you but I can't understand it for you. Unfortunately English has spread over time and space to such an extent that what some call English in parts is as close to it as dirt is to wheat flour. Matt 7:1

  • @ZeroMass
    @ZeroMass 12 років тому

    This is a great video, if you cannot understand it, perhaps do some reading on the subject. Not only you want to be spoon fed, but you have the nerve to complain about it..
    Thats pretty lame : /

  • @daneoish
    @daneoish 13 років тому

    i fell asleep 5 times in this vid fml i did try agaiin an the same thing happend???????

  • @aeroscope
    @aeroscope 11 років тому

    Isn't this an overrated pressurized filter? The best way is still using solar energy to purify!

  • @adenkrainrain523
    @adenkrainrain523 10 років тому

    owrigt....osmosis okeww

  • @BIAXlD3NT
    @BIAXlD3NT 12 років тому

    im honestly sitting here thinking... what the fuq are you talking about... if you want plain English go to Britain, not America.

  • @daneoish
    @daneoish 13 років тому

    i fell asleep 5 times in this vid fml i did try agaiin an the same thing happend???????