Arrangement for expelling highly volatile impurities from ground water
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United States of America Patent
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-
Dec 15, 1992
Grant Date -
N/A
app pub date -
Oct 4, 1991
filing date -
Apr 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An arrangement is provided for expelling highly volatile impurities from a ground water and a soil through which the ground water flows under the action of vacuum in a well shaft driven into an area of contaminated ground water and by directing a gas below a water level in the well shaft. The arrangement has a nozzle body below a water level in the well shaft for distributing a supplied gas; a pipe connected to the nozzle body to guide the gas into an air chamber defined by the nozzle body; a pipe member forming a continuation of the pipe for guiding water down and out through the nozzle body; a conveyor screw arranged in the pipe member and connected to a motor via a shaft passing through the pipe, the pipe member being additionally provided with at least one water through-opening in the region between the nozzle body and the conveyor screw; an intermediate floor arranged in the well shaft and being formed by a pot-like insert provided with an opening for displaceably guiding the pipe member, the pipe member extending through the opening in the intermediate floor; and at least one inflatable clamping hose for securing the intermediate floor to the well shaft.
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