FIELD: chemistry. SUBSTANCE: invention refers to devices used for separation of solutions with the aid of semipermeable membranes predominantly having diameter 293 mm employed in food, microbiological and chemical industries. Membrane apparatus has two flanges with unions for inlet of separable mixture and outlet of products, package of disc membrane and intermediate elements, sealing spacers, fixing members arranged over periphery of flanges and additional fixing member installed by means of sealing spacers along axis of apparatus. Central through holes are made in flanges, membrane and intermediate elements. EFFECT: enhanced operational efficiency of apparatus. 1 dwg
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