FILTER IMPREGNATED WITH COPPER

摘要

The present invention relates to a filter for purification of water. An object of the present invention is to provide a filter for purification of liquids which achieves at least 2 log reductions of bacteria, viruses or cysts. It is a further object of the present invention to provide a filter for purification of liquids which provides high flow rates in gravity fed water purification systems. The present inventors have surprisingly found that a filter comprising a fibrous support composed of fibres and a matrix of polymer with copper impregnated therein characterised in that the matrix of polymer is superimposed on the surface of the fibres, not only provides reduction of viruses from a liquid to be purified at low pressure drops but also retains high flow rates. It was further found that the copper leach from the filter is within limits.