This is an idea for the VERY NEAR future..."Biological" filtration...a water treatment system that uses naturally occurring bacteria instead of chemicals to remove contaminants from water, and then treats the water a second time by reverse osmosis (RO). Advantages of biological drinking water treatmenthas been growing in acceptance and popularity over the last five to ten years. Compared to other drinking water treatment technologies that sequester contaminants and then remove them, biological treatment destroys contaminants entirety and is able to remove multiple contaminants at the same time. This cuts down on sludge production and bacterial regrowth. Biological treatment can be used to remove natural organic matter, color, chloroform, perchlorate, nitrate, nitrite, bromate, iron, manganese, selenate, chromate, arsenate, and a variety of other contaminants. It eliminates the need for chemical oxidation prior to filtration or settling, eliminates the need for chemical reduction methods, and produces innocuous end-products, thus reducing the risk of a contaminated concentrate stream.
Check out the full article at WATERONLINE...http://www.wateronline.com/doc/biological-filtration-the-future-of-drinking-water-treatment-0001?sectionCode=Spotlight&templateCode=SponsorHeader&user=20&source=nl:38905
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