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:
Nov. 16, 2021
Filed:
Dec. 12, 2018
Chinese Research Academy of Environmental Sciences, Beijing, CN;
Lei Wang, Beijing, CN;
Beidou Xi, Beijing, CN;
Jinsheng Wang, Beijing, CN;
Ming Chang, Beijing, CN;
Yangyang Wang, Beijing, CN;
Tongtong Li, Beijing, CN;
Yali Zhang, Beijing, CN;
Hui Liu, Beijing, CN;
Feng Wu, Beijing, CN;
Qian Zhang, Beijing, CN;
CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES, Beijing, CN;
Abstract
It discloses a system for controlling heavy metals and a method for preventing and controlling heavy metals using the same. The system includes a constructed wetland (), in which several layers of fillers are laid, so that water is allowed to flow through each layer of the filler to remove heavy metals. Preferably, a sandwich wall is constructed around the constructed wetland (), and organic matters () which generating heat through fermentation is filled in the sandwich wall to supply heat to the constructed wetland () in winter. The sandwich wall is easy to build and the fermentation materials are cheap and easily available, thereby the present method is able to effectively solve the difficulties occurred in the operation of constructed wetland in winter.