| 摘要 |
PROBLEM TO BE SOLVED: To provide an ion exchange means having high practicability by easily regenerating treatment of an ion exchange means. SOLUTION: This ion exchange means has a first chamber which houses an ion exchange function material 31, chambers 60a and 60c which are respectively formed on the upper side and lower side of the first chamber, a second chamber 60a which is disposed on the upper side of the chamber 60b and houses a regenerating agent 62 for the ion exchange function material 31, a feed water path stop valve which opens and closes a water feed path to feed water to the second chamber 60a, a flow passage which connects the chamber 60b on the upper side and the second chamber 60a and a check valve 60f which permits the flow from the second chamber 60a to the chamber 60b on the upper side. The flow passage is so constituted that the water flows from the chamber 60c on the lower side through the first chamber to the chamber 60b on the upper side. |
