Patent · US Active

Method and device for controlling pollutants in basin water used for irrigating farmland in extremely water-scarce areas

US11174184B2 · kind B2 · utility

1Cited by

1References

8Claims

0Family size

Assignee

CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES · CN

Inventors

Beidou Xi · Beijing, CN
Lei Wang · Singapore, SG
Jinsheng Wang · Sunnyvale, US
Wenbing Tan · Beijing, CN
Tongtong Li · Okemos, US
Yangyang Wang · Scarsdale, US
Hui Liu · Xiamen, CN
Ruyue Yang · Beijing, CN
Yali Zhang · Tangshan City, CN
Feng Wu · Nanhu, CN

Key dates

Filing date	Dec 12, 2018
Grant date	Nov 16, 2021
Priority date	—
Expiry date	Dec 12, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W10/10
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The present invention relates to a method and a device for controlling pollutants in basin water used for irrigating farmland in extremely water-scarce areas. The device includes an alternate vertical flow constructed wetland, which is constructed 4-10 m far from basin revetment. After feeding basin water into the constructed wetland, pollutants, such as heavy metals, nitrogen, phosphorus and organic matters, are adsorbed or degraded through the constructed wetland, and then the treated basin water is transported to the farmland.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.