Application number/patent number: 00123368

A preparation method of natural bentonite wastewater treatment material, including the steps of sodium ion replacement of bentonite and adsorption of cetyltrimethylammonium bromide, It is characterized in that after natural bentonite sodium ion replacement, the following steps are added before the adsorption of cetyltrimethylammonium bromide: use crystalline aluminum chloride solution and sodium bentonite to mix evenly in a ratio of 1:2 to 4w/w, and then shake 10 to 36 hours, centrifuge, dry, and grind into powder; add 12% to 16% porogen to bentonite to make granules, and bake in a muffle furnace at 450°C to 600°C for 1 to 5 hours. The bentonite sewage treatment capacity prepared by the invention is greatly improved, and at the same time it is easy to separate from water.

Application date: December 6, 2000

Publication date: July 3, 2002

Authorization announcement date:

Applicant/patentee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Applicant address: No. 457, Zhongshan Road, Dalian City, Liaoning Province

Inventor and designer: Liu Xueliang; Liu Ying; Wang Junde ; Shang Zhenhua

Patent agency: Shenyang Keyuan Patent and Trademark Agency Co., Ltd.

Agent: Zhang Chen

Patent type: Invention patent

Classification number: C02F1/28; C02F1/42