Arrangement for driving volatile impurities from ground water
US5095975A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Sep 13, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An arrangement drives volatile impurities from ground water and ground through which it flows by producing a negative pressure in a well shaft extending to a region of a contaminated ground water by supplying a gas in an air chamber arranged above a water level in the well shaft. The arrangement includes partitions separating a well shaft region with a water permeable shaft wall for water suction from the ground and a well shaft region for resupply of the water into the ground. The partitions are formed as a pipe. A suction pump is arranged in the water suction region of the shaft and has an outlet, and a closed water receiving chamber is arranged underneath a nozzle body. The outlet of the suction pipe is connected with the water receiving chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.