The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2006
Filed:
Dec. 19, 2003
Mao-sung Lee, Hsinchu, TW;
Wang-kuan Chang, Hsinchu, TW;
Chihpin Huang, Hsinchu, TW;
Shih-ming Yen, Hsinchu, TW;
Mao-Sung Lee, Hsinchu, TW;
Wang-Kuan Chang, Hsinchu, TW;
Chihpin Huang, Hsinchu, TW;
Shih-Ming Yen, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A method of removing arsenic from water by using a reactor that is provided with a fluidized bed of carriers is disclosed. An arsenic-containing influent is mixed in the reactor with a sulfide aqueous solution or metallic salt aqueous solution at a predetermined pH, thereby resulting in formation of crystals of arsenic sulfides or arsenic acid metal salts. The arsenic contained in the influent is thus removed by crystallization. An effluent with a reduced arsenic content is discharged from the reactor. The carriers, on which the crystals are formed, are periodically removed from the reactor which is replenished with fresh carriers immediately after.