摘要 |
PURPOSE:To form an effective pre-processing unit by horizontally moving a truck with a wire rope, and scraping up and collecting sludge floating in the interface between a storing oil phase and a water phase with scraping means. CONSTITUTION:In an airtight chamber 7, reciprocating force is applied to a wire rope, so that a truck 4 connected to the rope 5 is reciprocated on rails 3. When the truck 4 is moved to a bit 2, a scraping plate 20 of the truck 4 is hung down, and when it is moved in the opposite direction, the plate is put up. Sludge floating in the interface between oil and water is scraped together in the vicinity of the bit 2 and collected in the bit 2 over a weir 30. |