Patent ID: 7294265

Claim:
An ion adsorption module comprising a container with an opening wherein at least one feed water flows into the opening and an organic porous ion exchange material comprising an organic porous cation exchange material and an organic porous anion exchange material and having a three-dimensional reticular structure comprised in the container, wherein the ion exchange material has a continuous pore structure comprising macropores and mesopores, the macropores are interconnected with each other to form the mesopores having an average diameter of 1-1,000 μm in the interconnected parts, the ion exchange material has a total pore volume of 1-50 ml/g, the ion exchange material comprises uniformly distributed ion exchange groups, the ion exchange material has an ion exchange capacity of 0.5 mg equivalent/g or more of the porous material on a dry basis, and wherein the module comprises a stratified bed wherein each bed comprises the organic porous ion exchange material comprising the organic porous cation exchange material and the organic porous anion exchange material.