[1]杨国栋,林朋飞,陈超,等.电解食盐水制备次氯酸钠过程中电极结垢的机理[J].中国给水排水,2026,42(9):54-59.
　YANGGuodong,LINPengfei,CHENChao,et al.Mechanism of Electrode Scaling in Process of Preparing Sodium Hypochlorite by Electrolytic Salt Water[J].China Water & Wastewater,2026,42(9):54-59.

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电解食盐水制备次氯酸钠过程中电极结垢的机理

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷期数: 2026年第9期页码: 54-59 栏目: 出版日期: 2026-05-01

Title:: Mechanism of Electrode Scaling in Process of Preparing Sodium Hypochlorite by Electrolytic Salt Water

作者:: 杨国栋¹，林朋飞²，陈超^2,3，李学艳¹，王常海⁴，邵淑梅⁴; （1.苏州科技大学环境科学与工程学院，江苏苏州 215009；2.清华苏州环境创新研究院，江苏苏州 215163；3.清华大学环境学院，北京 100084；4.苏州久征水务科技有限公司，江苏苏州 215163）

Author(s):: YANG　Guodong¹， LIN　Pengfei²， CHEN　Chao^2，3， LI　Xueyan¹， WANG　Changhai⁴， SHAO　Shumei⁴; （1. School of Environmental Science and Engineering， Suzhou University of Science and Technology， Suzhou 215009， China； 2. Research Institute for Environmental Innovation Tsinghua， Suzhou 215163， China； 3. School of Environment， Tsinghua University， Beijing 100084， China； 4. Suzhou Jiuzheng Water Technology Co. Ltd.， Suzhou 215163， China）

关键词:: 次氯酸钠发生器; 结垢; 晶体生长; 动力学

摘要:: 次氯酸钠发生器在使用过程中会发生电极结垢，进而导致电耗、盐耗增加，影响产出液有效氯浓度和电极寿命。为控制次氯酸钠发生器电极结垢对其运行的影响，实验时保持电流密度和流速不变，通过改变盐水中钙、镁无机离子比例以及水中有机物的存在探究对结垢的影响，并分析其机理。结果表明，溶液中的Mg²⁺和富里酸均会抑制氢氧化钙晶体的生长，也会影响晶体的亚晶尺寸，且富里酸对结垢的阻碍效果大于Mg²⁺。电解过程中OH^-浓度维持恒定，氢氧化钙结垢反应速率与Ca²⁺浓度成正比，符合伪一级动力学。实验三获得的反应速率常数为0.063 L/（mol·s），与拟合值高度吻合，验证了该动力学模型的准确性。

Abstract:: Electrode scaling occurs during use of a sodium hypochlorite generator. Scaling leads to increased power consumption and salt consumption, and affects the effective chlorine concentration of the produced solution and the electrode life. In order to control the effect of electrode scaling on the operation of the sodium hypochlorite generator, factors such as current density and flow velocity were kept constant during the experiments, the effects on scaling were investigated by varying the ratio of inorganic ions such as calcium and magnesium and the presence of organic matter in salt water, and the mechanism was analyzed. The results showed that both Mg²⁺ and fulvic acid in solution inhibited the growth of calcium hydroxide crystals and also affected the crystallite size, with fulvic acid having a greater inhibitory effect on scaling formation than Mg²⁺. During electrolysis, the OH^- concentration remained constant, and the reaction rate of calcium hydroxide scaling was proportional to the Ca²⁺ concentration, consistent with pseudo-first-order kinetics. The reaction rate constant obtained from experiment 3 was 0.063 L/(mol·s), which was in good agreement with the fitted value, validating the accuracy of this kinetic model.

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更新日期/Last Update: 2026-05-01