电容去离子技术用于模拟调相机转子冷却水处理的研究  

Capacitive deionization technology for simulating the rotor cooling water treatment of synchronous condenser

作　　者：程一杰 冯礼奎 于志勇 宋小宁 安佳佳 张晓松 张大全 CHENG Yijie;FENG Likui;Yu Zhiyong;SONG Xiaoning;AN Jiajia;ZHANG Xiaosong;ZHANG Daquan(State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China;College of Environmental and Chemical Engineering,Shanghai University of Electric Power,Shanghai 201306,China)

机构地区：[1]国网浙江省电力公司电力科学研究院,浙江杭州310014 [2]上海电力大学环境与化学工程学院,上海201306

出　　处：《工业水处理》2024年第10期174-182,共9页Industrial Water Treatment

基　　金：国网浙江省电力有限公司科技项目(5211DS22000L)。

摘　　要：电容去离子(CDI)技术是一种新型高效的水处理技术,具有低能耗、高效率、低成本、绿色无污染、电极可再生等优势。配制CuSO_(4)溶液模拟转子冷却水,通过溶液电导率、Cu^(2+)去除率、能耗、循环稳定性等系列指标,探讨基于活性炭电极的CDI技术处理调相机转子冷却水的应用可行性。实验结果表明,经CDI处理后,模拟转子冷却水电导率可低至4.1μS/cm,Cu^(2+)去除率为100%,出水透明纯净且无机械杂质,符合《发电机内冷水处理导则》(DL/T1039—2016)中规定的水质控制标准。采用SEM、XPS等表征了吸附Cu^(2+)后的活性炭电极,结果表明碳材料上出现铜元素。通过吸附动力学模型进一步对电吸附机理进行讨论分析,结果表明,吸附行为更符合伪一级动力学模型,推测电极对Cu^(2+)的吸附主要为物理吸附机制。Capacitive deionization(CDI)technology is a new and efficient water treatment technology with the advan-tages of low energy consumption,high efficiency,low cost,green and pollution-free,and renewable electrodes.CuSO4 solution was prepared to simulate rotor cooling water,and the feasibility of CDI technology based on activated carbon electrodes for synchronous condenser rotor cooling water was explored through a series of indicators such as solution conductivity,Cu^(2+)removal rate,energy consumption,and cycling stability.The results showed that after CDI treatment,the conductivity of the simulated rotor cooling water reached 4.1µS/cm,the Cu^(2+)removal rate was 100%.The effluent was transparent,pure and free of mechanical impurities,which met the water quality control standards specified in the“Guidelines for Internal Cooling Water Treatment of Generators”(DL/T 1039-2016).The activated carbon electrode after adsorption of Cu^(2+)was characterized by SEM and XPS,and showed the presence of copper element on the carbon material.Further discussion and analysis of the electro-adsorption mechanism were conducted through the adsorption kinetics model,and the results showed that the adsorption behavior was more in line with the pseudo-first-order kinetics model.It was speculated that the adsorption of Cu^(2+)by the electrode was mainly physical adsorption mechanism.

关 键 词：调相机 转子冷却水 电容去离子 活性炭 电吸附 

分 类 号：X703.1[环境科学与工程—环境工程] TQ085[化学工程] TU991.26[建筑科学—市政工程]