Leachate distribution system
US6802672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Jan 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A waste collection site having a fluid distribution structure, and the structure and related method, the structure including a geocomposite for placement on and between levels of collected waste and at least one pipe extending up from the geocomposite and adapted to receive the fluid from horizontally extending feeder headers. The permeable material includes a spacing layer between top and bottom layers, and a discharge manifold at the bottom of the pipe discharges the fluid between the top and bottom layers. The bottom layer has a flow rate FB of fluid therethrough and the top layer has a flow rate FT, where FB<FT, and the spacing layer maintains a space between the top and layers to permit flow of fluid therein to distribute the fluid. A geotextile usable as a layer of the geocomposite may be formed by modifying a non-woven needle punched geotextile, including the steps of calendaring the non-woven needle punched geotextile, and needle punching the non-woven needle punched geotextile after the calendaring step to create openings greater than 0.3 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.