The problem of water-born disease in the developing world is a serious one

2017-07-14 10:17:24 | 日記

Vestergaard Frandsen has developed a low-cost, highly-effective personal water purifier called Lifestraw. When the user sucks water into Lifestraw, the water first encounters a 100-micron mesh that removes large particles and bacteria colonies; a second 15-micron mesh also removes large bacteria and parasites. Finally, the water passes through an activated charcoal filter that traps parasites and removes some of the iodine taste from the water. There are several organizations including the Rotary Club International and IMA that distribute Lifestraws to those in need. After the earthquake, aid agencies and others were able to rush thousands of Lifestraws to badly affected areas and towns, removing dysentery as a concern and allowing Filter Presses for sale the Chinese authorities to focus on tending to the injured and shoring up damaged structures.
At a cost of two dollars, Lifestraw represents a major opportunity to reduce disease in the developing world. While there is still a considerable amount of iodine in the purified water, most people living in the developing world suffer from iodine deficiency.
Even the cleaning and maintenance of Lifestraw is simple. Lifestraw water can make up about 50-75% of the iodine needed in the human diet. Built from a durable plastic that resists mildew and bacteria, the Lifestraw can easily last for it’s one-year filter life.vestergaard-frandsen. To clean the Lifestraw, users are asked to regularly blow through it; the blowing action dislodges any buildup on the filter mesh. The iodine kills most bacteria still remaining after the filters.

The problem of water-born disease in the developing world is a serious one; each day over 6,000 people  most of them children  die from these illnesses.
Currently, Lifestraw is employed in Ghana, Nigeria, Pakistan and Uganda where it is showing effective results in reducing deaths from water-born illness. With no moving parts and powered only by the act of sucking water through a straw, each Lifestraw can purify up to 700 liters of water. The cost of Lifestraw is amazing, as well only $2 US. In fact, the world’s number one killer is diarrheal disease brought on by such bacteria as cholera, E. When coupled with other inexpensive, easy-to-use technologies such as insecticidal mosquito nets, the Lifestraw may help turn the corner on improving both the life span and quality of life for millions  perhaps even billions  around the globe.htm .
While Lifestraw effectively kills or removes many bacteria and viruses including cholera, typhoid, E.
For more information, or to donate a Lifestraw, please visit http://www. coli, salmonella and typhoid. In addition to use in the developing world, Lifestraw has found favor in use after natural disasters such as the recent earthquake in Wenchuan, China. faecalis, it cannot currently remove Giardia lamblia  the parasite responsible for what is referred to as beaver fever’ in the For what many people pay for a soda or a cup of coffee, one year of safe drinking water can be provided to another human being. coli and E. The exterior can be wiped clean with a dry cloth. Vestergaard Frandsen is currently developing technology that will also remove Giardia from drinking water but the task is complicated by the fact that giardia is iodine-resistant and less than 5 micron in size. The water then passes through a chamber housing beads with an iodine coating and continues into an open chamber where the iodine continues to act in the water. Bringing safe drinking water to areas of the world that lack electricity has been a challenge but a Swiss company is hoping to change that.
Lifestraw is a cleverly designed human powered filter; Filter Presses Manufacturers it uses a series of filters coupled with iodine-coated beads and an activated charcoal filter

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