| 电化学法处理钢厂循环冷却水的中试研究 |
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| 引用本文： | 李佳宾,李福勤,唐佳伟,张春晖,张引弓,朱敏.电化学法处理钢厂循环冷却水的中试研究[J].工业用水与废水,2021(2):55-59. |
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| 作者姓名： | 李佳宾 李福勤 唐佳伟 张春晖 张引弓 朱敏 |
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| 作者单位： | 河北工程大学能源与环境工程学院;中国矿业大学（北京）化学与环境工程学院 |
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| 基金项目： | 河北省重点研发计划项目(19213602D)。 |
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| 摘 要： | 为研究电化学法对循环冷却水的处理性能,以钢厂循环冷却水为处理对象,考察不同电流密度和循环流量对处理效果和运行成本的影响。结果表明,在初始硬度(以CaCO3计)为350 mg/L,电流密度为3 mA/cm2,循环流量为18 m3/h时,硬度去除率为25.95%, COD去除率为50.3%,能耗分别为25.29 kW·h/kgMg(OH)2]和70.17 kW·h/kgCOD]。电化学处理法能够影响污垢的晶型,降低Mg(OH)2晶体的完整度,使其结构疏松,有利于后续对污垢的处理。
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| 关 键 词： | 电化学法 钢厂 循环冷却水 除垢 除COD 能耗 电流密度 循环流量 |
Pilot study on treatment of circulating cooling water in steel plant by electrochemical process |
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| LI Jia-bin,LI Fu-qin,TANG Jia-wei,ZHANG Chun-hui,ZHANG Yin-gong,ZHU Min.Pilot study on treatment of circulating cooling water in steel plant by electrochemical process[J].Industrial Water & Wastewater,2021(2):55-59. |
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| Authors: | LI Jia-bin LI Fu-qin TANG Jia-wei ZHANG Chun-hui ZHANG Yin-gong ZHU Min |
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| Affiliation: | (College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;School of Chemical and Environmental Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China) |
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| Abstract: | In order to study the treatment performance of electrochemical method for circulating cooling water, taking cooling water of steel plant as the research object, the influence of different current density and circulating water flow on treatment effect and operation cost were investigated. The results showed that when the initial hardness concentration(calculated by CaCO3) was 350 mg/L, the current density was 3 mA/cm2, and the circulating water flow was 18 m3/h, the removal rates of hardness and COD reached 25.95% and 50.3% respectively,and the energy consumption were 25.29 kW·h/kgMg(OH)2] and 70.17 kW·h/kgCOD] respectively. The electrochemical method can affect the crystal form of scale, reduce the integrity of Mg(OH)2 crystal, and make its structure loose, which is conducive to the subsequent treatment of scale. |
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| Keywords: | electrochemical method steel plant circulating cooling water descaling COD removal energy consumption current density circulating water flow |
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