How does the straw work ?
LifeStraw™ is a simple device designed for those unfortunate people in the third world who do not have access to clean drinking water. The staw is composed of two textile filters, followed by a chamber with beads impregnated with iodine
Functionality and use of design: What first meets the water when sucked up is a pre-filter of PE filter textile with a mesh opening of 100 micron, shortly followed by a second textile filter in polyester with a mesh opening of 15 micron. In this way all big articles are filtered out, even clusters of bacteria are removed. Then the water is led into a chamber of iodine impregnated beads, where bacteria, viruses and parasites are killed. The second chamber is a void space, where the iodine being washed off the beads can maintain their killing effect. The last chamber consists of granulated active carbon, which role is to take the main part of the bad smell of iodine, and to take the parasites that have not been taken by the pre-filter or killed by the iodine. The biggest parasites will be taken by the pre-filter, the weakest will be killed by the iodine, and the medium range parasites will be picked up by the active carbon. The main interest to everyone is the killing of bacteria, and here our laboratory reading tells us that we have a log. 7 to log 8 kill of most bacteria. This is better than tap water in many developed countries.
For those of you considering using LifeStraw™ for outdoor adventures in the continental United States, beware that the common "beaver fever" (Giardia lamblia infection) is caused by an organism with 5 micron spores, which are resistant to iodine.
Using the Life straw in our Green Community Hub Programs
This invention is being used inside of our hubs in developing countries where there is no running water. When we first visit a school or clinic that is in a state of emergency, we take notes on how we can help to bring running water. Then in a town meeting, we let the villages know that we can begin to help by giving them Life straws to be worn around their necks and as they suck in using this large plastic straw, the chemicals inside the straw kill many water borne illnesses.
For many in our hub areas, they are sick on a daily basis from this water that they drink from mud holes shared with animals. To date, we have distributed thousands of straws with the kindness of Rotary Clubs from the UK, and South Africa. We also look forward to working with the Vestergaard company to reach out and expand our projects around the world to children in need.
When we have 2000 villagers in front of us, this is a perfect time to teach about water and sanitation as we hand out straws and explain the importance of sanitation connected to fetching and storing water.
It is also a perfect chance to engage the community in many lessons that can teach about methods of sustainable living. This is our long term goal......all beginning with the Life Straw.
After the straw is given out then we start the process of proposing boreholes and pumps.
If you would like to donate 1000 straws plus shipping to one of our adopted schools
contact Rachael Paulson at email@example.com and go to
http://www.vestergaard-frandsen.com/lifestraw.htm to read more about the Life Straw.
This is a great project for Rotary Clubs, Womens Clubs and school service learning projects.