Water Wheel - May/Jun 2007

Abstract

Virus removing technology developed U S University of Delaware researchers have reportedly developed an inexpensive, non-chlorine based technology that can remove harmful microorganisms, including viruses, from drinking water. The patented technology incorporates highly reactive iron in the filtering process to deliver a chemical “knock out punch” to a host of pathogens, from E. coli to rotavirus. “By using elemental iron in the filtration process, we were able to remove viral agents from drinking water at high efficiencies,” noted associated professor Pei Chiu. “Of a quarter of a million particles going in, only a few were going out.” The elemental or ‘zer o-valent’ iron used in the technology is widely available  Global news I na study undertaken at Uppsala University, in Sweden, frogs that started life as male tadpoles were changed into females by oestrogen-like pollutants similar to those found in water bodies around the world. It is repor ted that two species of frogs were exposed to levels of oestrogen similar to those found in water resources in Europe, the US, and Canada.

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