WATER TREATMENT SYSTEM

PROBLEM TO BE SOLVED: To provide a water treatment system capable of regenerating an anion exchange resin bed at a suitable timing.SOLUTION: There is provided a water treatment system which comprises: an ion exchanger 11 having an anion exchange resin bed; circulation means 12 having a water treatment mode and a regeneration mode; a raw water silica concentration measuring part 14; a raw water electric conductivity measuring part 15, a raw water silica ratio calculating part 17B; an anion quantity estimation part 17C for estimating an anion quantity removed from raw water 11 by the anion exchange resin bed; a load state calculation part 17D for calculating the load factor determined by calculating a ratio between the anion quantity and the maximum anion quantity; and a circulation control part 17A for controlling the circulation means 12 so as to switch from the water treatment mode to the regeneration mode based on the silica ratio calculated by the raw water silica ratio calculating part 17B and the load factor calculated by the load state calculation part 17D and controlling the circulation means 12 so as to switch from the water treatment mode to the regeneration mode based on a predetermined switch condition.SELECTED DRAWING: Figure 1 【課題】陰イオン交換樹脂床を適切なタイミングで再生することができる水処理システムを提供する。【解決手段】陰イオン交換樹脂床を有するイオン交換装置１１と、水処理モードと再生モードとを有する流通手段１２と、原水シリカ濃度測定部１４と、原水電気伝導率測定部１５と、原水シリカ比率計算部１７Ｂと、陰イオン交換樹脂床が原水Ｗ１１から除去した陰イオン量を推定する陰イオン量推定部１７Ｃと、陰イオン量と最大の陰イオン量との比を計算することによって求められる負荷率を計算する負荷状態計算部１７Ｄと、原水シリカ比率計算部１７Ｂが計算したシリカ比率、及び負荷状態計算部１７Ｄが計算した負荷率に基づいて、水処理モードから再生モードに切り替えるように流通手段１２を制御し、所定の移行条件に基づいて、再生モードから水処理モードに切り替えるように流通手段１２を制御する流通制御部１７Ａと、を備える水処理システム。【選択図】図１