Municipal solid waste landfill system
US5857807A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/901
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A municipal solid waste (MSW) landfill system includes a leachate collection system installed in a layer of MSW in a preexisting landfill. The layer of MSW is covered with a layer of waste ash produced by incinerated MSW. The ash is gas impermeable and serves as a methane gas containment layer above the MSW cell. A plurality of columns of crushed stone pass through the ash layer to provide a leachate collection path to the leachate collection system. Alternate layers of ash and MSW fill the landfill with leachate collection columns in each ash layer to collect the leachate from each MSW cell layer. At least one, or as conditions may require, a number of gas wells are installed in each MSW cell for removing methane gas from the cell. The gas wells may be interconnected to collect the gas and supply it to a utilization system or for burn off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.