Soil decontamination
US5209604A · kind A · utility
27Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Apr 9, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C2101/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The top layers of soil contaminated with halogenated organic chemicals are remediated by initial heating at moderate temperature and reduced pressure to remove soil moisture and volatile contaminants and subsequently heating the soil of minimum clay content or acidity at higher temperature, thereby decomposing the halogenated organic chemicals contained therein. Means for effecting such remediation is provided which includes a heat source, pressure regulating means, and vapor collection and treatment means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.