DEVICE FOR WATER PURIFICATION FROM CHEMICAL AND MECHANICAL IMPURITIES Russian patent published in 1997 - IPC

FIELD: devices for water purification. SUBSTANCE: device has branch pipe for admission of water to be purified to tubular module which accommodates one filter element and branch pipe for discharge of filtrate. Filter elements made in the form of two permeable membranes wound on perforated or porous tube and one layer of ion-exchange fabric arranged between the membranes. End faces of filter elements from one side are sealed and module body from this side is connected with branch pipe for admission of water to be purified and from the opposite side, ends of all filter elements are connected with branch pipe for discharge of filtrate. EFFECT: higher efficiency. 3 dwg