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| Hollow fiber ultrafiltration replaces 'water worries' More than half of all new homes in the US and Canada are being built in areas without municipal water and sewage infrastructure, leaving them especially vulnerable to biological contamination from source groundwater and surface water used for drinking. Increasingly common breaks in municipal water delivery lines raise the possibility of contamination of centrally treated water as it travels to homes. Water safety concerns include threats of biological terrorism and recent natural disasters such as Hurricane Katrina. Other 'water worries' spring from deaths and illnesses caused by E. coli, Cryptosporidium, Legionella and other waterborne pathogens. Additionally, environmental groups, public safety organizations and regulatory agencies have become concerned with the hazards posed by disinfection byproducts and other unwanted chemicals in the water supply. Whole-home hollow-fiber ultrafiltration Like RO systems, Aquacore hollow-fiber ultrafiltration systems operate on available water pressure and require no chemicals to deliver high quality drinking water. UF membrane technology is the same as with industrial-grade membranes, proven in water treatment plants worldwide. Unlike RO, Aquacore leaves dissolved minerals intact, and no holding tank is required as water is processed at a rate of 10 gallons per minute. While typical RO systems waste 50% or more in incoming water, 98 % efficient Aquacore uses a patented multi-bore hollow fiber membrane design with seven capillaries in every fiber. Thousands of membrane strands have billions of pores that act as a strainer to filter out particles, turbidity and pathogens, while allowing water to flow through with virtually no pressure drop. Aquacore membranes filter down to approximately .02 microns nominal. The inside-out filtration process channels water inside the capillaries, trapping impurities on the inside walls and removing them with a high-velocity flushing action. A typical installation includes a sediment prefilter and optional GAC post filter. write your comments about the article :: © 2006 Construction News :: home page |