C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/39
C02F 1/58 (2006.01) B01J 41/04 (2006.01) B01J 47/00 (2006.01) B01J 47/02 (2006.01) C02F 1/00 (2006.01)
Patent
CA 2039147
ABSTRACT The present invention relates to an ion exchange device for purifying water or improving its quality, and preferably reducing the nitrite and/or nitrate content, consisting of at least one exchange container with a basic anion exchanger in chloride and/or sulphate form arranged therein and at least one additional basic anion exchanger layer in hydroxyl form or a hydroxyl-group-containing layer, in which the anion exchanger layers are arranged one behind the other directly and/or with the interposition of an intermediate layer and the anion exchanger layer(s) in chloride and/or sulphate form is/are arranged not as a mixture but in (a) separate layer(s). The chloride and/or sulphate-containing anion exchanger layer is preferably arranged near or beneath the inlet aperture, preferably beneath the filter layer and/or (in the direction of flow of the water to be purified) in front of the anion exchanger layer in the form of hydroxyl or containing hydroxyl groups. The invention also relates to a process for manufacturing the ion exchange device for water purification and its use to remove nitrates and/or nitrites from water.
Affonso Alvaro
Moffat & Co.
LandOfFree
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