B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 20/00 (2006.01) B01D 15/00 (2006.01) B01D 39/20 (2006.01) B01J 20/20 (2006.01) C02F 1/00 (2006.01) C02F 1/28 (2006.01)
Patent
CA 2079820
A mixed filter bed composition for purifying for human consumption water containing inorganic, organic and biological contaminants is provided. The composition of the bed includes from about 40% to about 80% by weight of a carbonous sorbent, from about 5% to about 20% by weight of activated alumina, from about 5% to about 20% by weight of silica hydrogel, from about 5% to about 20% by weight of zeolite, and from about 0% to about 10% by weight of metallic components that generate metallic cations. The invention provides potable water, free of organic, inorganic and microbial contaminants. The invention also imparts the desirable filtration characteristics of traditional adsorbents, while avoiding increased biological contamination of drinking water during the filtration process.
Composition de lit filtrant mélangé servant à purifier, pour consommation humaine, de l'eau contenant des contaminants inorganiques, organiques et biologiques. Le lit est composé d'environ 40 à 80 % en poids d'un sorbant carboneux, d'environ 5 à 20 % en poids d'alumine activée, d'environ 5 à 20 % en poids d'hydrogel de silice, d'environ 5 à 20 % en poids de zéolithe et d'environ 0 à 10 % en poids de composants métalliques générant des cations métalliques. L'invention permet d'obtenir de l'eau potable purifiée de contaminants organiques, inorganiques et microbiens. Elle présente les caractéristiques de filtration souhaitables des adsorbants connus et évite la contamination biologique accrue de l'eau potable pendant le processus de filtration.
Marks & Clerk
Minnesota Mining And Manufacturing Company
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