| 摘要 |
PROBLEM TO BE SOLVED: To provide a filtering device which suppresses sticking of a foreign matter onto the filtering surface of a filter body and suppresses clogging of the filter body due to the foreign matter stuck onto the filtering surface of the filter body, and which can effectively maintain filtration performance even when filtration treatment is successively carried out.SOLUTION: The filtering device 10 is provided with: a microbubble generator 110 which makes liquid to be treated contain microbubbles; a casing 20 which has an inflow port 42 for introducing the liquid to be treated from the microbubble generator 110, an outflow port 52 for discharging treated liquid obtained by filtration treatment of the liquid to be treated and a discharge port 62 for discharging concentrated liquid containing an object to be separated that is separated from the liquid to be treated by filtration treatment; and the filter body 30 which is mounted so as to divide the inside of the casing 20 to a first chamber 2A where the inflow port 42 is located and a second chamber 2B where the outflow port 52 is located, the upper part of which is opened, and the lower part of which is connected to the discharge port 62. The inflow port 42 introduces the liquid to be treated so as to make it swirlingly flow in a spiral shape. |
