PROBLEM TO BE SOLVED: To provide a dialysis system in which improvement in energy saving can be achieved.SOLUTION: A dialysis system comprises: a raw water supply part 110 a reverse permeation device 140 which separates raw water 111 into reverse permeated water 141 and concentrated water 142 a tank 150 for reverse permeated water a dialysis fluid supply device 210 a plurality of dialyzers to which dialysis fluid 211 is supplied from the dialysis fluid supply device a tank 233 for used dialysis fluid a first heat exchanger 120 which exchanges heat between the raw water supplied from the raw water supply part and the concentrated water discharged from the reverse permeation device and a second heat exchanger 130 which exchanges heat between the raw water having passed through the first heat exchanger and used dialysis fluid 22 discharged from the tank for used dialysis fluid. The reverse permeation device is intermittently operated. While the reverse permeation device is operated, the storage volume of the reverse permeated water increases in the tank for reverse permeated water and the storage volume of the used dialysis fluid decreases in the tank for used dialysis fluid. While the reverse permeation device is stopped, the storage volume of the reverse permeated water decreases in the tank for reverse permeated water and the storage volume of the used dialysis fluid increases in the tank for used dialysis fluid.COPYRIGHT: (C)2015,JPO&INPIT【課題】省エネルギー化の向上を図れる透析システムを提供する。【解決手段】原水供給部110と、原水111を逆浸透水141と濃縮水142とに分離する逆浸透装置140と、逆浸透水用タンク150と、透析液供給装置210と、透析液供給装置から透析液211の供給を受ける複数の透析装置と、使用済透析液用タンク233と、原水供給部から供給された原水と逆浸透装置から排出された濃縮水とを熱交換させる第1熱交換器120と、第1熱交換器を通過した原水と使用済透析液用タンクから排出された使用済透析液22とを熱交換させる第2熱交換器130とを備える。逆浸透装置は間欠運転し、運転中においては、逆浸透水用タンクでの逆浸透水の貯水量が増加しつつ使用済透析液用タンクでの使用済透析液の貯液量が減少し、停止中においては、逆浸透水用タンクでの逆浸透水の貯水量が減少しつつ使用済透析液用タンクでの使用済透析液の貯液量が増加する。【選択図】図1
