Hydraulic ram pumps and Sling Pumps

New Page 2homeabout usIntruduction to U.V.light as disinfectionagentHomepage of Sun Ultra LightSolar Disinfection of Drinking Water.It is possible to purify drinking water from bacteria and virusby the ultraviolet rays inSolar Disinfection ofDrinking WaterlinksSunlightIf you are situated between the degrees of latitude from Tunis in the North toCapetown in the South, you can take a clear glass or plastic bottle and fill itwith the cleanest water you can get. This bottle should be placed in directsunlight for 3-4 hours.Now this water will be safe to drink. The ultraviolet insunlight radiation kills bacteria and virus. HOW ? ? ? Although this methodhas been known for thousands of years and has been scientifically proven towork and UNICEF has published the book " Solar Disinfection ofDrinkinWater" in 1984 - it seems that very few people know about this.Background:One of the greatest environmental and health hazards in the third world isshortage of water for domestic use:In 1993 there were still more than 1000 million humans without access to cleansafe water.This causes more than 80 % of all cases of illness. Diarrhoea causesdeath of more than 6 million children and 18 million adults every year. (Thisnumber equals the number of persons dying of starvation.)●●To disinfect one liter of water by boiling will require approx. one kg offirewood.This is an economical and ecological impossibility in most developingcountries.Sufficient supply of clean safe water is probably the most basic human right.Already back in 1978 The Declaration of Alma-Ata stated that one of theminimum goals which the world community should have, was that everybodyshould have this access before the year 2000.http://s.u.l.homepage.dk/ (1 of 2) [1/13/2005 12:47:03 PM]