Device for purifying cropland effluents
US10196288B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Jul 22, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for purifying first-stage drainage effluents from dry croplands, the device including: a) a plastic corrugated pipe including an upright segment and a horizontal segment, the upright segment comprising plastic mesh openings; b) a steel wire mesh box filled with stuffing pellets including biological carriers; and an inspection cover. The plastic mesh openings are disposed at one end of the upright segment, the other end of the upright segment is connected to one end of the horizontal segment, and the other end of the horizontal segment is connected to the steel wire mesh box. The upper surface of the upright segment of the plastic corrugated pipe is lower than the upper surface of the field ditch, and the lower edge of the plastic mesh openings is higher than the bottom surface of the field ditch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.