对离子交换法软化自来水效果的研究  

Study on the Effect of Softening Tap Water by Ion Exchange

作　　者：孟子纯 Meng Zichun(Army Special Operations College,Guangzhou 510630,Guangdong)

机构地区：[1]陆军特种作战学院,广东广州510630

出　　处：《云南化工》2023年第1期119-121,共3页Yunnan Chemical Technology

摘　　要：通过自来水处理厂的净化、消毒后,自来水可供人们生活、生产使用。但自来水中依然含有过量的钙、镁离子,对人体有害,不可直接用作饮用水,因此,自来水应先进行软化。为了提高饮用水的质量,常用离子交换法作为软化方法。根据离子交换法净化自来水中钙离子的实验流程,以及用分光光度法检测净化效果的实验操作与数据处理方法,定性分析了离子交换法软化自来水的效果。实验结果表明,使用分光光度法检测净化效果的最佳测量波长为650 nm,且处理后自来水样品吸光度值(0.055Abs、0.021Abs、0.078Abs、0.043Abs)均明显小于处理前自来水样品吸光度值(0.783Abs、0.665Abs、0.796Abs、0.634Abs),说明离子交换法可有效去除自来水中的Ca^(2+)。After the purification and disinfection of the water treatment plant,the tap water can be used for people s life and production.However,tap water still contains excessive calcium and magnesium ions,which are harmful to human health and cannot be directly used as drinking water.Therefore,tap water should be softened first.In order to improve the quality of drinking water,ion exchange is often used as a softening method.According to the experimental process of purifying calcium ions in tap water by ion exchange method,as well as the experimental operation and data processing method of detecting the purification effect by spectrophotometry,the author qualitatively analyzes the effect of softening tap water by ion exchange method.The experimental results show that the best measuring wavelength for the purification effect detection by spectrophotometry is 650nm,and the absorbance values of tap water samples after treatment(0.055Abs,0.021Abs,0.078Abs,0.043Abs)are significantly smaller than those of tap water samples before treatment(0.783Abs,0.665Abs,0.796Abs,0.634Abs),indicating that the ion exchange method can effectively remove Ca^(2+)from tap water.

关 键 词：离子交换法 分光光度法 净化效果 吸光度 水质软化 

分 类 号：X52[环境科学与工程—环境工程]