Arrangement for driving out volatile impurities from ground water
US5143607A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Dec 13, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An arrangement for driving out volatile impurities from ground water by air or another gas, has a shaft adapted to extend to a ground water region and having at least locally a water-permeable wall formed as another wall and limiting at least partially an air receiving chamber communicating with an outside air, a ventilator communicating with the shaft for producing a negative pressure and aspirating air from a shaft portion located above a ground water level, a pipe extending in the shaft to an area under the ground water level so as to form the air receiving chamber and to provide communication to the outside air, the pipe having an inner end region provided with nozzle openings, a screening sleeve arranged concentrically relative to the pipe and at least partially covering the end region of said pipe provided with said nozzle openings. The screening sleeve is supported displaceably relative to the pipe and sealed relative to the pipe and a floating body coupled with the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.