COMPREHENSIVE SEAWATER UTILIZATION METHOD FOR ENERGY SAVING AND EMISSION REDUCTION

WIPO Patent Application WO/2012/027901

A1

A comprehensive seawater utilization method for energy saving and emission reduction is provided, which includes the following steps: a. the pumped seawater is filtered by a multistage combinational web, chelated and flocculated, a precipitated for removing turbidity, microfiltrated, ultrafiltrated and nanofiltrated, and the filtrate is purified seawater and stored in a purified seawater tank, while the microfiltrated, ultrafiltrated and nanofiltrated residues are to be used; b. microalgae in the microfiltrated residue is extracted and is processed deeply for preparing medicines and food A, while the remains is used as feedstuff A; c. ultramicroalage in the ultrafiltrated residue is extracted and is processed deeply for preparing medicines and food B, while the remains is used as feedstuff B; d. the purified seawater produced in step a is concentrated for the first time, and strong brine and dilute brine are obtained; e. the strong brine is mixed with the nanofiltrated residue, and element products, compounds and clean freshwater are extracted from the mixture; f. the obtained dilute brine is desalted for obtaining clean freshwater and recovery seawater; and g. the recovered seawater is stored in the purified seawater tank. The method has advantages of simple operation, saving energy, low cost, a high additional value and no pollution to the marine ecological-environment.

GE WENYU (CN)

PCT/CN2010/076591

March 08, 2012

September 03, 2010

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GE WENYU (CN)

C02F9/04; C02F1/44; C02F1/52; C02F103/08

CN101143754A	2008-03-19
CN1328867A	2002-01-02
CN1673100A	2005-09-28
GB2394678A	2004-05-05
JP2003245666A	2003-09-02

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