CIRCULATION FILTER

PURPOSE:To efficiently remove fur or impurity and to keep sterilizing and deodorizing actions for a long period of time by providing the decomposing bed held between a cationic substance bed and an anionic substance bed to a water distributing circulation passage. CONSTITUTION:The water supplied from a water distributing pipe is allowed to fill the cationic substance bed 1 received in a housing to be sent in a decomposing bed 3 through a circulation passage and further passed through the next anionic substance bed 2 to be made possible to flow out as purified water from the other end of said bed 2. In this constitution, sterilization and deodorizing are continued for a long period of time by the above-mentioned ion filters 1, 2 generating special ions and fur or impurity is subjected to ionized decomposition in the decomposing bed to accelerate the purification of water.