| 摘要 |
The present invention is directed to a method of removing metallic hydroxide salts having impurities from an aqueous medium. The method includes the steps of: (a) providing an edge type filter; (b) passing an aqueous medium with metallic hydroxide salts having impurities to the filter; (c) removing the metallic hydroxide salts with the filter and forming a cleaned aqueous medium; (d) removing the cleaned aqueous medium from the filter; (e) drying the filter after the filter has become blocked by the metallic hydroxide salts and forming a powder; and (f) removing the powder from the filter, whereby the filter is unblocked.
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