PROBLEM TO BE SOLVED: To provide a method for treating water for breeding, a device for treating the water for breeding and a system for breeding, capable of further small-sizing and simplifying equipment.SOLUTION: This method for treating the water for breeding is for treating water for breeding 1, by removing suspended materials and also nitration-treating the water by aerobic microorganisms and is provided by pulling in the water for rearing 1, made to flow into a biological filtering vessel 2 that houses these microorganisms, into a foam separation device 3 for removing the suspended materials 4 by a foam-separating treatment and for improving the amount of dissolved oxygen, and then returning it to the biological filtering vessel 2 for accelerating the nitrating action by the aerobic microorganisms. Also, the device for treating the water for breeding is provided with the biological filtering vessel 2 for holding the aerobic microorganisms, by a filtering material 6 forming gaps 8 for passing the suspended materials 4 contained in the water for breeding 1 and nitration-treating the flowing-in water for breeding 1 by the microorganisms and the foam separation device 3 for drawing-in the water for breeding 1 from the biological filtering vessel 2, removing the suspended materials by aeration from an aerator 9, and improving the amount of the dissolved oxygen and returning the water to the biological filtering vessel 2.COPYRIGHT: (C)2009,JPO&INPIT【課題】設備をより小型化、単純化することができる飼育水処理方法、飼育水処理装置、および飼育システムの提供を目的とする。【解決手段】飼育水1を懸濁物除去処理するとともに、好気性の微生物により硝化処理する飼育水処理方法であって、前記微生物を収容する生物濾過槽2に流入された飼育水1を泡沫分離装置3に引き込み、泡沫分離処理により懸濁物4を除去するとともに溶存酸素量を高めた後、前記生物濾過槽2に戻して好気性の微生物の硝化作用を促進させて飼育水処理方法を構成する。また、飼育水1に含まれた懸濁物4を通過させる間隙8を形成する濾材6によって好気性の微生物を保持し、流入された飼育水1を微生物により硝化処理する生物濾過槽2と、該生物濾過槽2から飼育水1を引き込み、エアレータ9からのエアレーションにより懸濁物除去処理するとともに溶存酸素量を高めて前記生物濾過槽2に帰還させる泡沫分離装置3とを有して飼育水処理装置を構成する。【選択図】図1
