Method of and arrangement for rinsing out impurities from ground
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United States of America Patent
Stats
-
Jan 10, 1995
Grant Date -
N/A
app pub date -
May 19, 1993
filing date -
Jun 3, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for rinsing contaminants from ground comprises a perforated well tube sunk through a well shaft in the ground to ground water. The ground water is received in the well shaft through lower perforations, pumped up the well shaft, and out to upper ground regions through upper perforations, so that it can circulate back down to the ground water level, thus flushing contaminants from the upper ground regions. The circulation is accomplished with a well tube insert assembly placed in the well tube, comprising a seal device intermediate upper and lower well tube portions, a pipe through the seal, and a pump in the pipe to pump water from the lower portion to the upper portion. After circulation is established, the well tube insert assembly may be raised within the well tube to raise the level of circulation in the ground. A filter or cleaning device may be placed in the circulation path to remove contaminants.
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