| 摘要 |
PURPOSE: To improve the efficiency of an oil-water separator, to save labor, and to extend the life of a filtration film. CONSTITUTION: The oil-water separator in which a floating oil recovery means 5 in a preceding stage and a film type oil-water separation means 2 in a succeeding stage are combined, is equipped with a circulating route having the separation means 2 and a circulating pump 6, a concentrated liquid returning route 8 for returning concentrated liquid from the separating means 2 in the circulating route to the upstream side of the recovery means 5, and a pressure pump 10 for supplying treated liquid from the recovery means 5 to the circulating route, on the downstream side of the recovery means 5. |
