Water purification

Claim 1

AN APPARATUS FOR RECLAIMING PRODUCT WATER FROM A FEED WATER SOLUTION OF ION CONTENT COMPRISING: A CONTAINER HAVING A BODY OF FEED IN IT, AN ELONGATED COMPRESSIBLE DIFFUSION MASS EXPOSED AT BOTH END PORTIONS ONE OF SAID END PORTIONS BEING IMMERSED IN SAID BODY OF WATER, SAID DIFFUSION MASS COMPRISING A FELT-LIKE MATTING OF INERT MATERIAL DEFINING A LABYRINTH OF MINUTE IRREGULAR CIRCITOUS CAPILLARY-LIKE PASSAGES CAPABLE OF MOVING WATER MOLECULES BY DIFFUSION FASTER THAN IONS CAN TRAVEL THERETHROUGH, MEANS FOR EXTERNALLY SEALING THE DIFFUSION MASS FROM ATMOSPHERE AND WATER OVER ITS REMAINING SURFACE PORTIONS, MEANS CONNECTED TO THE OTHER END PORTION FOR SUBJECTING SAID DIFFUSION MASS TO NEGATIVE GAUGE PRESSURE, MEANS FOR COLLECTING THE PRODUCT WATER PASSING THROUGH SAID DIFFUSION MASS, SAID ONE END PORTION BEING PROVIDED WITH A CUP MEMBER HAVING ITS BOTTOM WALL PERFORATED. SAID CUP CARRYING AN ALKALI EARTH COMPOUND SOLUBLE IN WATER FOR PROGRESSIVE DISASSOCIATION INTO ION PARTICLES IN THE FEED WATER SUPPLIED TO SAID DIFFUSION MASS.