PROBLEM TO BE SOLVED: To provide a foam separation apparatus capable of a steam separation of treated water from which foam is separated and miniaturizing to make an installation space small.SOLUTION: The foam separation apparatus for separating suspended matter contained in raw water 9 in a water tank 2 is provided with: a foam separation tank 2 to which gas-liquid mixed water containing the foam is supplied and from which foam adsorbing the suspended matter and floated is discharged and a gas-liquid separation tank 30 which communicates with the foam separation tank 20 and into which treated water 66 separated from the foam in the foam separation tank 20 flows in. The gas liquid separation tank 30 is provided with a water level adjusting means 50 which comprises an outer cylinder 31 into which treated water treated in the foam separation tank 20 flows-in from the lower side and an inner cylinder 32 which is provided inside the outer cylinder 31 and into which the treated water ascending in the outer cylinder 31 flows into the lower side and adjusts the height of the treated water when the treated water in the outer cylinder 31 flows into the inner cylinder 32 to control the water level in the foam separation tank 20.COPYRIGHT: (C)2012,JPO&INPIT【課題】泡沫分離された処理水の気水分離を行うことができ、しかも、小型化が可能で設置スペースを小さくすることができる泡沫分離装置を提供する。【解決手段】水槽2内の原水9中に含まれる懸濁物を分離するための泡沫分離装置であって、気泡を含む気液混合水が供給され、且つ、懸濁物を吸着して浮上した泡沫を排出する泡沫分離槽20と、前記泡沫分離槽20と連通され、泡沫分離槽20内で泡沫と分離された処理水66が流入する気液分離槽30とを備えている。気液分離槽30は、泡沫分離槽20で処理された処理水が下部から流入する外筒31と、外筒31内に設けられ、外筒31内を上昇した処理水が下方に流入する内筒32とからなり、泡沫分離槽20内の水位を調整すべく、外筒31内の処理水が内筒32内へ流入する高さを調整する水位調整手段50を備えている。【選択図】図1
