| 主权项 |
1. Apparatus for treating an aqueous stream, said apparatus comprising a first ion exchange membrane having exchangeable ions of a first charge and capable of passing ions of said first charge, an aqueous stream flow channel having an inlet and an outlet, an ion receiving flow channel adjacent to said aqueous stream flow channel and separated therefrom by said first membrane, stationary flow-through ion exchange packing of the same charge as said first ion exchange membrane disposed in said ion receiving flow channel, a packed bed of ion exchange particles disposed in and extending between said aqueous stream flow channel inlet and outlet, a portion of said packed bed being packed at a density less than 2 grams of packed dry particles per cc of the sample stream flow channel, said packed bed portion extending from said aqueous stream flow channel outlet upstream to at least 30% of the distance between said aqueous stream inlet and outlet, and first and second electrodes being in electrical communication with said aqueous stream flow channel and ion receiving flow channel, respectively. |
