B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/141
B01D 17/032 (2006.01) B09C 1/00 (2006.01) E02B 15/04 (2006.01) E21B 43/38 (2006.01)
Patent
CA 2028863
ABSTRACT OF THE DISCLOSURE Method and Apparatus for Removing a Liquid Phase Floating on a Surface of Groundwater In order to remove a liquid phase (7) floating on a surface of groundwater (6), the liquid level (18) in a well (1) is lowered by continually pumping out ground- water by means of a submergible pump (2). The floating liquid phase (7) thereby collecting on the groundwater surface (6) in the area of the well is withdrawn by a second submergible pump (12) arranged in a bucket-shaped vessel (8) which is adapted to be lowered in the well (1) by means of a lifting device (9, 10). The lifting device (9, 10) is controlled by the liquid level (18) such that the inlet apertures (11) of the vessel (8), while being below the liquid level (18), are not below the ground- water surface (6).
Preussag Aktiengesellschaft
Riches Mckenzie & Herbert Llp
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