| abstract |
By storing a liquid to be treated in a processing tank main body 10 having a bottom portion 10g which tapers down with particles of materials to be treated dissolved therein, removing the liquid to be treated from a position lower than the liquid level of the processing tank main body 10, and returning the liquid to the bottom portion 10g of the processing tank main body 10, thereby circulating the liquid to be treated while forming an eddy current within the processing tank main body 10, and simultaneously removing air bubbles from the lower part of the treatment Main unit 10 are supplied, wherein a first component containing in foaming is separated from a second component, which is less suitable for floating, which is contained in the liquid to be treated. |