Counter current filter apparatus for treatment or purification of water

A countercurrent filter apparatus for treatment or purification of water for the purpose of adsorptive removal of inorganic-based or organic-based contaminants, which countercurrent filter is designed for uptake, storage and release of at least one particulate adsorption material;

• wherein the countercurrent filter apparatus comprises at least one housing, said housing comprising at least one adsorption zone having a diameter D1 and a height H1, at least one water entry region having a diameter D2 and at least one water exit region having a diameter D3,
• wherein the apparatus is adapted, during operation, to provide a flow and a flow direction of the water being treated, the flow direction being from the water entry region to the water exit region,
• wherein the adsorption or countercurrent zone, in terms of flow, is disposed between the water entry region and the water exit region and wherein the adsorption or countercurrent zone is disposed downstream of the water entry region and upstream of the water exit region, based on the flow direction of the water,
• wherein the water entry region comprises at least one water feed and at least one adsorption material outlet and wherein the water exit region comprises at least one water drain and least one adsorption material inlet,
• a ratio D1:D2 is in the range from 1:1.1 to 1:5 and
• wherein a ratio D1:D3 is in the range from 1:1.1 to 1:5;
• and
• wherein the countercurrent filter apparatus has a first transition region and a second transition region,
• wherein the first transition region, in terms of flow, is disposed between the water entry region and the adsorption zone and wherein the first transition region is disposed downstream of the water entry region and upstream of the adsorption zone, based on the flow direction of the water,
• wherein the first transition region is conical and, proceeding from the water entry region having the diameter D2, narrows at adsorption zone having the diameter D1,
• wherein the second transition region, in terms of flow, is disposed between the water exit region and the adsorption and wherein the second transition region is disposed downstream of the adsorption zone and upstream of the water exit region, based on the flow direction of the water,
• wherein the second transition region is conical and, proceeding from the water exit region having the diameter D3, narrows in the direction of at the adsorption or countercurrent zone having the diameter D1, and
• wherein the water entry region of countercurrent filter apparatus comprises at least one distributor unit, and
• wherein the distributor unit, in terms of flow, is disposed between the water feed of the water entry region and the adsorption zone and between the water feed of the water entry region and the first transition region.