| 摘要 |
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.
|
