Patent DE2531732A1 successfully refreshed from Google Patents.
DE2531732A1
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Oil contaminated ground treatment - by mixing with hot water in screw feed drum and separating in settling basin
Assignee: Individual
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Filing: 1975-07-16
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Granted: —
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Expires: 1995-07-16
Abstract
Abstract Earth which has been badly contaminated by fuel oil is washed with hot water at 60-90 degrees C and a solvent by mixing it in a screw conveyor drum, followed by separating from the cleaning medium, containing the contaminants, in a settling basin. Dissolved oil and other soluble contaminants are recovered by filtering, centrifuging, precipitation or neutralisation. The process creates less difficulties than the provision of special waste disposal dumps which are subject to clean water regulations. Combustion leaves many pollutants in the residue andis an expensive method of disposal.
Inventors
- 👤 Paul Heidenreich
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 04:34
CPC Classifications
B; B09; B09C; B09C1/00; B09C1/02; B03; B03B; B03B9/00; B03B9/02
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