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本发明系在使用铜及铜合金的热交换部及其配管的取暖用锅炉或供水用设备的液循环系统中,将含有从该热交换部及其配管溶解析出铜离子的热水,以螯合基末端有碱土金属的螯合性离子交换树脂进行处理的取暖用及供水用热水处理方法。这里所用的热水是指60℃以上的热水,也包括刚热交换之后的60℃以上热水。所谓螯合基末端有碱土金属的螯合基离子交换树脂(以下称做碱土金属型螯合性离子交換树脂),是指树脂母体如苯酚类、苯乙烯类、丙烯酸酯类、氯乙烯类以及环氧系的树脂、进行离子交换的螯合基如二
The present invention relates to a liquid circulation system of a boiler for heating or a device for water supply in which a heat exchange portion of copper and a copper alloy and a piping thereof are used, and the hot water containing copper ions dissolved from the heat exchange portion and its piping is dissolved. A method for treating heating water and hot water that is treated with an alkaline earth metal-chelating ion exchange resin at the end of the base. The hot water used herein refers to hot water at a temperature of 60°C or higher, and also includes hot water at a temperature of 60°C or higher immediately after heat exchange. The so-called chelate-group ion exchange resin having an alkaline earth metal at the chelate end (hereinafter referred to as alkaline earth metal type chelating ion exchange resin) refers to a resin matrix such as phenols, styrenes, acrylic esters, vinyl chloride, and the like. Epoxy resins, chelating groups for ion exchange such as two