Method and device for preventing and controlling pollutants in the reuse of reclaimed water in agricultural activity areas with extreme water shortage

US11352281B2 · kind B2 · utility

Assignee

• CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES · CN

Inventors

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

Key dates

• Filing date: Dec 12, 2018
• Grant date: Jun 7, 2022
• Expiry date: Jun 29, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2305/023
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Disclosed a device for preventing and controlling pollutants in the reuse of reclaimed water in agricultural activity areas with extreme water shortage, including A2/O tank (1), nano-aeration tank (2) and quick soil infiltration device (3) connected in sequence. A2/O tank (1) is fed with wastewater to be treated, which is treated sequentially in anaerobic, anoxic and aerobic environment, thereafter the supernatant is transported into nano-aeration tank (2). The supernatant treated by nano-aeration tank (2) is transported into quick soil infiltration device (3), and is allowed to flow through one or more layers of fillers laid in quick soil infiltration device (3) to degrade or remove pollutants.