Method for the rehabilitation of polluted soils and installation for the implementation of this method
US5544975A · kind A · utility
5Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Sep 28, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
In a method for the rehabilitation of polluted soils by means of a third substance, the polluted soils, excavated and processed beforehand, are introduced into a contacting cell in the lower part of which the injection of the third substance, towards the lateral walls of said cell, forms a polluted solution subsequently collected in the upper part while the soils continuously separated from the polluted solution are recovered at the lower part of said cell before being rinsed and dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.