PROBLEM TO BE SOLVED: To enable reliable washing and sterilizing while effectively using the exhaust heat of hot water used for the washing and sterilizing.SOLUTION: A hot water sterilization system for a water treatment apparatus includes a hot-water supply line 2 to a hot water tank 13, a pump 14 provided on the hot-water supply line 2 at the downstream side of the hot water tank 13, a line 7 to supply water to the hot water tank 13, and a first heat collector 9 for indirect heat exchange between the supplied water and the waste water produced from the washing and sterilizing. Further, an auxiliary heat source 16 for heating the water in the hot water tank 13 is controlled so that the temperature detected by a water temperature detector 22 in the hot water tank 13 becomes higher than the set temperature. When washing of the water treatment apparatus 4 is requested and also the detected water temperature is higher than the set temperature, the pump 14 is driven for supplying the water treatment apparatus 4 with the hot water from the hot water tank 13.COPYRIGHT: (C)2013,JPO&INPIT【課題】 洗浄殺菌に用いる温水の排熱を有効利用するとともに、確実な洗浄殺菌を可能にすること。【解決手段】 水処理機器の温水殺菌システムにおいて、温水タンク13への温水供給ライン2と、温水タンク13の下流側の温水供給ライン2に設けられるポンプ14と、温水タンク13への給水ライン7と、給水と洗浄殺菌排水とを間接熱交換させる第一熱回収器9とを備え、温水タンク13内の水温検出器22の検出温度が設定値以上となるように温水タンク13内の水を加熱する補助熱源16を制御するとともに、水処理機器4の洗浄要求があり、かつ検出温度が設定値以上のときポンプ14を駆動して、温水タンク13の温水を水処理機器4へ供給する。【選択図】図1
