PROBLEM TO BE SOLVED: To achieve a low-priced cleaning apparatus utilizing the high antibacterial properties and high deodorant properties of platinum nanoparticles.SOLUTION: The drip of a platinum aqueous solution with high antibacterial properties and deodorant properties obtained by diluting the undiluted solution of a platinum aqueous solution in which platinum nanoparticles are dissolved with water of 1L with water of a volume in any magnification of 400 times, 800 times and 1,500 times is stuck to the surface of ceramic balls 3. The high antibacterial properties and deodorant properties of the platinum nanoparticles dissolved into the platinum aqueous solution are utilized. The water soluble cutting liquid as the cooling water of a cutting machine septic in a storage tank 1 successively passes through a nonwoven filter 6 and a porous filter 5, is filtered, and is thereafter allowed to flow into the ceramic ball layer 3. The platinum nanoparticles dissolved into the platinum aqueous solution stuck in a drip shape to the respective surfaces of many ceramic balls 4 shut off an odor source and kill bacteria or the like by the exhibition of the antibacterial performance and deodorant performance thereof. The aqueous cutting liquid returned under circulation is cleaned to the respective steps.【課題】白金ナノ粒子の高抗菌性・高消臭性を利用した低価格な浄化装置を実現する。【解決手段】１リットルの水により白金ナノ粒子が溶解して成る白金水溶液の原液を、更に４００倍・８００倍・１５００倍の何れかの倍率の容量の水で希釈化された高い抗菌性・消臭性を有する白金水溶液の点滴が、セラミックボール３の表面に付着されている。この白金水溶液に溶け込んでいる白金ナノ粒子の高い「抗菌性」・「消臭性」が利用される。貯蔵タンク１内の腐敗した、切削機の冷却水としての水溶性切削液は、不織布フィルター６、多孔質フィルター５を順次に通過して、ろ過された後、セラミックボール層３内に流れ込む。多数のセラミックボール４の各々の表面に点滴状で付着された白金水溶液に溶け込んでいる白金ナノ粒子は、その「抗菌性能」及び「消臭性能」の発揮により、悪臭源を絶ち、細菌等を殺す。循環して戻ってきた水溶性切削液は、各段に清浄化されている。【選択図】図２
