Arrangement for cleaning ground water
US5281333A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1993 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Feb 5, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An arrangement for cleaning ground water and ground region through which it passes comprises transporting unit for producing a liquid circulation between a well shaft extending in the region of contaminated ground water and the surrounding region, unit for separating the well shaft into an upper region and a lower region, a water permeable shaft wall arranged at least locally for aspiration of water from and reintroduction of water into the ground, unit for connecting the regions with one another and including a throughgoing tube in which the transporting unit operate, and unit forming filter chambers in the upper region and in the lower region of the well shaft. The filter chambers occupy the whole free cross-section of the well shaft and extend at least in the upper well region upwardly over an upper edge of the water permeable shaft wall into an outwardly closed shaft region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.