To provide a filtration device of oil-containing wastewater and a washing method of filtration membrane of the oil-containing wastewater where washing ability of the filtration membrane is enhanced.SOLUTION: A filtration device 1 of oil-containing wastewater comprises: a membrane immersion tank 2 introduced with the oil-containing wastewater; a filtration membrane 3 being immersed into the oil-containing wastewater introduced into the membrane immersion tank 2 and filtering the oil-containing wastewater; and washing means 11 washing the filtration membrane 3. The washing means 11 has a suction pump 8 disposed at a secondary side of the filtration membrane 3. The filtration membrane 3 is washed by permeating washing liquid from a primary side to the secondary side of the filtration membrane 3 by the suction pump 8. In a washing method of the filtration membrane 3 of the oil-containing wastewater, the oil-containing wastewater is introduced into the membrane immersion tank 2, the filtration membrane 3 is immersed into the oil-containing wastewater and the filtration membrane 3 is washed by permeating the washing liquid from the primary side to the secondary side of the filtration membrane 3 by the suction pump 8 disposed at the secondary side of the filtration membrane 3.SELECTED DRAWING: Figure 3
【課題】ろ過膜の洗浄性を高める。【解決手段】含油排水のろ過装置1は、含油排水が導入される膜浸漬槽2と、膜浸漬槽2に導入される含油排水に浸漬されて、含油排水をろ過するろ過膜3と、ろ過膜3を洗浄する洗浄手段11と、を有している。洗浄手段11はろ過膜3の2次側に設けられた吸引ポンプ8を備え、吸引ポンプ8によってろ過膜3の1次側から2次側に洗浄液を透過させることによってろ過膜3を洗浄する。含油排水のろ過膜3の洗浄方法は、含油排水が導入される膜浸漬槽2に設けられ、含油排水に浸漬されるろ過膜3の洗浄方法であって、ろ過膜3の2次側に設けられた吸引ポンプ8でろ過膜3の1次側から2次側に洗浄液を透過させることによってろ過膜3を洗浄する。【選択図】図3
FILTRATION DEVICE OF OIL-CONTAINING WASTEWATER AND WASHING METHOD OF FILTRATION MEMBRANE OF OIL-CONTAINING WASTEWATER
含油排水のろ過装置及び含油排水のろ過膜の洗浄方法
2022-01-25
Patent
Elektronische Ressource
Japanisch
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