MEMBRANE APPARATUS WITH NONSTATIONARY HYDRODYNAMICS Russian patent published in 2001 - IPC

FIELD: separation, concentration and desalination of various solutions by reverse osmosis and ultrafiltration; food-processing, pharmaceutical and microbiological industries and agroindustrial complexes. SUBSTANCE: membrane apparatus includes tubular membrane modules made in form of porous bodies with semi-permeable membranes applied on inner surface, branch pipes for introducing starting solution and discharge of filtrate and concentrate, semi-permeable hose located coaxially relative to membrane surface, members interconnected by chain links which are spherical in shape and are set in motion by means of drive and driven sprockets. Spherical members are movable in impermeable hose along membrane surface. EFFECT: increased productivity of apparatus due to improved hydrodynamic conditions of flow of separable solution. 3 dwg