| 摘要 |
<p>The invention relates to an arrangement for removing infiltration water from gas collection wells in refuse dumps (landfill sites) with a wellhead, equipped with a drainage connection and a gas removal connection, the arrangement being designed to receive a drainage pump in the interior of the well. The invention combines the features a) that a drainage-pump drive unit is arranged outside the well, remote from the gas-carrying parts of the arrangement, and thus outside the explosion-prone regions, b) that the drainage pump is arranged so as to be stationary in the well interior, however dismantling is possible at any time, c) the drainage pump and the drive-energy transmission devices between the drive unit and drainage pump are, in the regions in contact with the landfill gas, free of spark-generating parts. In this arrangement, the drainage pump is preferably a jet pump known per se without moving metallic parts, which receives its drive energy, via a drive-flow line, from a remotely arranged drive-flow pump and removes the sucked-up landfill infiltration water and, if appropriate, condensation, via a drainage flow line. <IMAGE></p> |
