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(11)    Patent No :    AP 2349    (73) Applicant(s)       
(21)    Application No :    AP/P/2007/003896    DESALITECH LIMITED, 4 Mevo Hashaked Street, 90836       
            Har Adar,       
(22)    Filing Date :    23.06.2005    Israel       
(24)    Date of Grant &    16.01.2012           
(45)    Publication :

(30)    Priority Data            (72) Inventors   
    (33) Country    (31) Number    (32) Date    EFRATY Avi, Israel   
    IL    162713    24.06.2004    (74) Representative   
(84)    Designated State           
    BW  KE   MZ   NA   ZW        HONEY & BLANCKENBERG   
(51)    International    Classification    C02F 1/58 (2006.01)    C02F 1/00 (2006.01)   
            C02F 1/44 (2006.01)       
(54)    Title

Continuous closed-circuit desalination apparatus without containers.

(57)    Abstract

An apparatus for continuous closed-circuit consecutive sequential desalination of a salt water solution by reverse osmosis that comprises a closed circuit system comprising one or more desalination modules having their respective inlets and outlets connected in parallel by conducing lines, each of desalination modules comprising of one or more membrane elements, a pressurizing device for creating counter pressure to enable reverse osmosis desalination and replacement of released permeate by fresh, a circulation system for recycling the desalinated solution through the desalination modules, a conducting line systems for permeate collection from the desalination modules, a conducting line system for removing brine effluent a valve system to enable periodic discharge of brine from the closed circuit without stopping desalination, and monitoring and control systems to enable continuous closed circuit desalination of desired recovery proceed in consecutive sequential steps under variable or constant pressure conditions.

(56)    Documents Cited :    DE 4331102 X    DE 10112719 X    US 5647973 X


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