US Patent Issued to Dongjiang Environmental on Oct. 14 for "Treatment method of leachate of hazardous waste landfill site" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,638, issued on Oct. 14, was assigned to Dongjiang Environmental Co. Ltd. (Shenzhen, China).

"Treatment method of leachate of hazardous waste landfill site" was invented by Wenbiao Wu (Guangdong, China), Wenbin Xu (Guangdong, China), Menglan Xu (Guangdong, China) and Weining Qin (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to the field of water treatment technologies, and in particular to a treatment method of a leachate from hazardous waste landfill site. The key points of the technical scheme were as follows: adding sodium carbonate to the leachate to obtain a calcium carbonate residue and a first ...