Assembly for monitoring a landfill and a method of locating leaks
US5570974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Oct 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The monitoring assembly for a landfill or garbage dump comprises two sensor hoses, which are laid on both sides of a sealing liner parallel to each other. A transport medium can flow through the sensor hoses in the same or in opposite directions. First and second indicator signals are determined with the aid of at least one detector. The indicator signals indicate the presence of a pollutant in the transport medium and thus in the relevant sensor hose. These signals are logically combined with each other, with regard to location, preferably subtracted from each other. The resulting signal distinctly shows an extreme value in its curve as soon as a leak is present in the sealing liner. The position can be easily determined from that graphic representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.