Method and device for controlling pollutants in metal mine water resources cycling utilization
US11332400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2018 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Jun 29, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
It discloses to a device and a method for controlling pollutants in metal mine water resources cycling utilization. The device includes a multi-stage inflow constructed wetland (3), in which one or more layers of the filler are laid, and water distribution pipes (4) are buried at different height levels in the filler layers for multi-stage inflow, so that the received basin water is allowed to flow through each layer of the filler to degrade or remove the pollutants. In the multi-stage inflow constructed wetland, the types of fillers, dosage ratio, particle size and filling height of fillers in each layer are specifically selected. Therefore, heavy metal adsorption, suspended matter filtration, organic matter degradation, dephosphorization and denitrification can be effectively realized in the multi-stage inflow constructed wetland.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.