Abstract:
A device for the sterilization of fluids wherein a sterilizing gas is chemically generated in-situ within a liquid-impermeable container, which container is in contact with the fluid to be sterilized. The container is constructed at least in part of a solid, non-porous, liquid-impermeable synthetic plastic barrier, which barrier permits controlled diffusion of the sterilizing gas therethrough while preventing passage therethrough of impurities and the residue of the gas generation reaction.
Abstract:
The present invention relates to an ion exchange device for purifying water by reducing the nitrite and/or nitrate content, consisting of at least one 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 exchange 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 layer is arranged near or beneath the inlet aperture, preferably beneath the filter layer and/or (in the direction of flow of the water) in front of the anion exchange layer in the form of hydroxyl or containing hydroxyl groups. This invention also relates to processes for manufacturing and for using the ion exchange device to remove nitrates and/or nitrates from water.