Patent · US Expired

Arrangement for driving out volatile impurities from ground water

US4950394A · kind A · utility

31Cited by

10References

24Claims

0Family size

Assignee

Ieg Industrie-Engineering GmbH · DE

Inventors

Bruno Bernhardt · Reutlingen, DE
Anton Hessner · Reutlingen, DE
Rainer Krug · Trochtelfingen, DE

Key dates

Filing date	Feb 17, 1989
Grant date	Aug 21, 1990
Priority date	—
Expiry date	Feb 17, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB09C2101/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An arrangement for driving out volatile impurities from a ground water with a well shaft extending to the region of the ground water to be purified, the arrangement comprises an element for producing a negative pressure in the well shaft and supplying a gas underneath a water level in the well shaft, an element for providing a plurality of capillary openings in an upper sieve wall portion of the well shaft at least in a purification region between a gas inlet and a water level in the well shaft to enhance a laminary flow of ground water with relatively high speed, the capillary openings forming a greater free throughflow surface than a remaining portion of the well shaft.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.