Arrangement for driving out volatile impurities from ground water
US5116163A · kind A · utility
52Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1991 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Jan 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An arrangement for driving out volatile impurities from a ground water and a ground region through which the ground water passes by introducing air or another gas into an opening in the ground region and subsequent aspiration of the air or the gas with entrained contamination substances, the contains a cup insert arranged to close an opening formed in a ground region at its lower end and provided with a closed wall, and two pipes arranged concentrically in the opening for supplying the air or gas and withdrawing the air or gas, respectively. The pipes include an inner pipe extending into an interior of the cup insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.