Method and device for the purification, especially desalination, of water
Autor/es: HAMBITZER GUENTHER (DE);BIOLLAZ HEIDE (DE);BORCK MARKUS (DE);RIPP CHRISTIANE (DE)
Solicitante: CLEAN WATER GES FUER WASSERAUF (DE)
Número de solicitud: EP20040729355 20040424
Clasificación de patentes: C02F1/44; 02F1/46; C02F1/461; C02F1/469; C02F1/44; C02F1/46; C02F1/461; C02F1/469; (IPC1-7):C02F1/44; B01D61/36; C02F1/46; B01D61/36 (europea); C02F1/44 (europea); C02F1/46E (europea)
Fecha de publicación de la concesión: Wed, 08/02/2006
DescripciónDisclosed is a water punfication method, especially for obtaining fresh water from salt water by means of mem- o brane distillation. Investment costs and operating expenses are substantially reduced compared with previously known methods by e a combination of the following measures: - the water that is to be purified is retained in a feeding chamber, the wall of which is formed at least in part by a hydrophobic steam-permeable membrane; - a hydrophilic membrane that has a greater thickness and lower heat conductivity per unit area than the hydrophobic membrane extends parallel to the hydrophobic membrane; - a difference in steam pressure is created between the water that ir to be punfied and the fresh water by means of a pumping action such that membrane distillation is driven by the difference in steam pressure created by the pump action, the water condensing in the pores of the hydrophilic membrane.