Medium material and its preparation method for elimination of arsenic pollution from groundwater

US9795942B2 · kind B2 · utility

Assignee

• CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES · CN

Inventors

• Yonghai Jiang · Beijing, CN
• Beidou Xi · Beijing, CN
• Yu Yang · Beijing, CN
• Mingxiao Li · Beijing, CN
• Zhifei Ma · Beijing, CN
• Xinying Lian · Beijing, CN
• Xiangjian Xu · Changzhou City, CN

Key dates

• Filing date: Dec 1, 2015
• Grant date: Oct 24, 2017
• Expiry date: Apr 17, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2103/06
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The present invention relates to a medium material for eliminating arsenic pollution from groundwater, which is a granular material having an average particle diameter of 1 to 3 cm, prepared from manganese ore, meerschaum, straws, animal excrements, active sludge and active bacterium agent in a mass ratio of 1:0.2˜0.5:0.5˜1:0.2˜0.4:0.2˜0.4:0.0005˜0.002 via mixing, composting, carbonizing and crushing. The prevent invention also discloses a process for producing the above-mentioned medium material. The medium material of the present invention can eliminate multivalent arsenic from groundwater, has a long service life, and does not cause secondary pollution to groundwater.