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Saturday, August 6, 2016

Purify Water Using Chemical Treatments


Water purification tablets are a great back up form of water treatment. They are excellent Bug Out Bags and survival kits because they are light weight and inexpensive. Water purification tablets are also great to store in your vehicle or your bug out location to disinfect water on demand.  If the water supply I am drawing from is extremely shady I combine both a filter and the tablets to ensure my safety. Also, be aware that water purification tablets have a shelf life. Check the expiration dates on your tablets and replace any that are expired.

Water purification can come in tablet or droplet form. The tablet form is better because it is a lighter weight that droplets and easy to use when in a stressful situation.

Two water born pathogens that commonly found in untreated water- Cryptosporidium and Giardia.

Cryptosporidium is a genus of apicomplexan protozoans that can cause gastrointestinal illness with diarrhea in humans. According to the CDC it is one of the most frequent causes of waterborne disease among humans in the United States. In a disaster situation where government maintained services are effected, it is highly likely that this protozoa parasite will find its way into our water supply.

Giardia attached to the wall of the small intestines. Giardia is also an infectious protozoa and it is a big deal in emergency preparedness because it can have such a dramatic effect on your health. The symptoms of Giardia, may begin to appear 2 days after infection, include violent diarrhea, excess gas, stomach or abdominal cramps, upset stomach, and nausea. 

The typical infection within an individual can be slight, resolve without treatment in about 2–6 weeks, although sometimes longer and sometimes the infection is more severe requiring immediate medical attention. 

There are three main types of water purification tablets on the market (Chlorine (NaDCC), Iodine and Chlorine Dioxide) . Not all are equal as each one has its strengths and weaknesses. Choose the purification tablet that works the best with your situation and location.



Chlorine Dioxide Tablets (Potable Aqua, Katadyn and Aquamira Brands). Even though the word “chlorine” is in the name, chlorine dioxide is neither iodine nor chlorine. It uses a highly active form of oxygen to purify water so it leaves absolutely zero taste. As a nice bonus the action of chlorine dioxide causes a lot of sediment to drop out of suspension (fall to the bottom) leaving the container of water more clear and further improving flavor. Chlorine dioxide tablets are a good choice for those allergic to iodine, with thyroid problems, or on lithium. Always follow product usage instructions.

Chlorine NaDCC Tablets (Potable Aqua, Oasis Plus, Aquatabsand Rothco’s Military “Chlor-Floc“ Brands). NaDCC, also known as sodium dichloroisocyanurate or sodium troclosene, is a form of chlorine used for disinfection. NaDCC tablets are different and improved over the older chlorine based (halazone) tablets. When added to water, NaDCC releases hydrochloric acid which reacts through oxidization with microorganisms and kills them. Many tablets advertise no chlorine after taste. Unopened NaDCC tablets have a shelf life of 3-5 years, if opened they should be discarded after 3 months. Always follow product usage instructions. 

Iodine Tablets (Potable Aqua,Coleman, and Coghlans brands). Iodine Tablets use iodine to purify contaminated water. Most iodine purification tablets tend to leave a funny taste to the water and some discoloration, however vitamin C or ascorbic acid can be added after the treatment time to improve the taste and remove the color. This often comes in the form of two bottles with two separate tablets. Iodine water treatment has been proven to be somewhat effective against Giardia and not effective against Crytosporidium.  Always follow product usage instructions. 
[Source:www.swordofsurvival.com]

4 comments:

  1. should you treat the water then run it through the purifier or the other way round?

    ReplyDelete
    Replies
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