Purification Tablets

Discussion in 'Water Filtering & Storage' started by Yolanda, Oct 10, 2008.

  1. Yolanda

    Yolanda Member

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    What do purification tablets do? Do you to do anything else to the water if you have purification tablets?
     
  2. ke4sky

    ke4sky ke4sky

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    Disaster Water Supplies

    Our fire department teaches a hands-on course at the fire academy entitled "Disaster Survival in the Urban Environment." Its target audience is municipal employees, CERT, Neighborhood Watch and Medical Reserve Corps. This is our student outline from the unit on water supply:

    WATER SUPPLY

    Minimum for drinking - 1 gallon per person, per day

    More is needed for cooking and food preparation

    Still more needed for personal hygiene, sanitation and decontamination

    Store a two week supply as minimum,

    Use food grade containers with screw caps

    Keep away from direct sunlight

    EMERGENCY WATER SOURCES

    Captive water in household hot water tank and interior plumbing is OK

    Filter cloudy water to remove particulates, using an EPA-rated filter
    with a pore size ≤ 1 micron, then:

    Disinfect with Clorox (6% sodium hypochlorite)

    Add 8 drops of Chlorox bleach per gallon if water is "clear," 16 drops if turbid or "cloudy"

    Let chemically sterilized water water stand 15 minutes before use

    Or boil vigorously for 15 minutes

    Store potable water in clean containers.

    All natural sources (from springs, ponds, rivers or streams) must be boiled or chemically disinfected.

    Disaster Conditions Causing Contamination of Water Supplies and Surface Waters

    • Stagnant surface water – Mosquito harborage
    • Contaminated flood waters - Sewage treatment system overflow
    • Petroleum, industrial, agricultural, hazmat releases

    Chemical disinfection or boiling - Kills bacteria and viruses

    Doesn’t remove particulates or chemical pollutants

    Filtration - Coffee filters, etc. remove gross particulates only

    EPA-rated filters (pore size smaller than 1 micron) are required to remove
    bacteria, viruses and Giardia cysts, but don’t remove chemical pollutants.

    Distillation is the most effective method.

    For further information see the URL

    CDC Disasters | Fact Sheet: Keep Food and Water Safe After a Disaster or Power Outage
     
    Last edited: Oct 21, 2008

  3. Blister

    Blister Active Member

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    Chlorine and iodine have a negative effect on your thyroid gland. Don't drink these things. I suggest boiling all the water as you need it or 1 to 2 gallons in advance for cooler water and that's only if you have reason to suspect it is contaminated.

    Store water now. We use the large apple juice bottles (2gal) and change the water in them every few months. Like they said above, don't store them in sunlight, keep them in an unused closet or cabinet. Put some water in the empty bottles and shake it vigorously to clean it. If it has any juice in it, bacteria will form feeding on the sugar in the juices.

    For gathering water from exposed natural sources, I suggest a portable filter. Some are very compact. One micron, as stated above.
     
  4. Prince

    Prince Member

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    Does the purification tablet chemically neutralize certain things that boiling cant?
     
  5. Blister

    Blister Active Member

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    No, they only kill bacteria, fungus and other biological hazards. They both do the same things but one method leaves chemicals in your water and one doesn't.

    Water contaminated with chemicals should be distilled as ke4sky stated.
     
  6. JeepHammer

    JeepHammer Well-Known Member

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    Yolanda, water purification tablets use a number of ways to 'Purify' the water from biological pathogens. (living Organisms)

    Remember, we are talking about 'Clear' water here, not stagnated, or full of debris that can hide pathogens...
    You will need to let solids settle and pour off the 'Clear' water,
    Or you will need to filter the solids out of the water before you attempt to 'Purify' it.

    Solids can, and will, hide pathogens from the treatments, chemical, thermal and UV...
    ----------------------

    The 'Purification Tablets' come with three basic active ingredients,

    1. Iodine.
    Iodine is non removable from the water, will kill off beneficial bacteria in the gut, and iodine is hard on organs, including liver, kidneys, but especially the thyroid gland.

    For very short term use, the iodine tablets, or tincture of iodine can be used to purify water well enough to keep you alive, but for the very young, very old, sick or pregnant, it's not a good idea.

    2. Chlorine.
    A chlorine derivative in solid form that will kill about everything in water that isn't hiding.
    (there are several besides Sodium Hypochlorite)

    Chlorine will attempt to return to a gas state, and will evaporate off quite readily at room temprature when water is poured between containers and allowed to aerate.
    This is beneficial to people that are sick, pregnant, have weakened immune systems, the very young or very old.

    3. Ozone.
    Ozone is an unstable gas, normally generated by an electrical current, but can also be made by chemical processes.
    Regular O2 is what you breather (2 Oxygen Molecules),
    Ozone is O3 (3 Oxygen molecules) and it's deadly to all pathogens...

    Ozone will also oxidize most metals, minerals, chemicals it comes into contact with and make the precipitate out of the water.
    (meaning if there is anything left of them after they come into contact with the 03, what's left will escape an open container as a gas, or heavier than water will settle to the bottom of the container)

    Ozone leaves nothing behind but oxygen when it reacts with outside air, there is no pollution, no chemical residue (like chlorine, salts or iodine) when it's finished working.

    Being quite expensive to produce, the best source right now is surplus from the South African army.
    There were so many water sources polluted by everything up to and including chemical weapons in South Africa, this was the only way to keep their people alive...

    Safe for ALL people, young, old, sick, pregnant. There are NO chemical leftovers from the ozone tablets you need to worry about, and most of the time the water even tastes good!
    (Ozone removes most things that make water taste strange while it's removing the other chemicals and pathogens!)
    ---------------------------------

    Personally, I've given up on ALL chemical treatments.
    Too much aggravation!

    I've gone to Filtering and UV purification of spring/well water and it works GREAT!

    Small scale UV purification is as easy at turning on a 'Light Stick' type UV light and dropping it in a container of water.

    Large scale UV purification is as easy as a set of sediment filters (0.05 micron) to get the 'Chunks' out,
    Then a quick run through a UV light tray (Solar powered here!) then off to the potable water holing tank!
     
    Last edited: Oct 23, 2008