电化学水处理技术降低循环水硬度的实验研究  

Experimental Study on Reducing the Hardness of Circulating Water by Electrochemical Water Treatment Technology

作　　者：李火银[1] 员佳琦 李攀[1] 程应伟 朱学智 于新功 LI Huoyin;YUAN Jiaqi;LI Pan;CHENG Yingwei;ZHU Xuezhi;YU Xingong(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450000,China;Henan Shouheng New Material Co.Ltd.,Xuchang 452670,China)

机构地区：[1]郑州大学机械与动力工程学院,河南郑州450000 [2]河南首恒新材料有限公司,河南许昌452670

出　　处：《水处理技术》2024年第3期37-41,47,共6页Technology of Water Treatment

基　　金：国家自然科学基金青年项目(52006200);河南首恒新材料有限公司赞助(横向课题合同编号:20210438A)。

摘　　要：使用电化学法处理某焦化企业实际循环水的实验,探究了循环水的硬度和碱度去除率随处理时间的变化情况。分析了电流密度、水力停留时间、极板间距等实验操作参数以及商用阻垢剂对电解效果和能耗的影响。结果表明:硬度和碱度去除率随处理时间呈现先上升后平稳的趋势,且碱度去除率总是高于硬度去除率;电流密度为70 A/m^(2)、水力停留时间为6 min、极板间距为3 cm时电解效果最佳,硬度和碱度去除率可达27%以上,单位能耗低至13 kWh/kg;商用阻垢剂对电解效果具有阻碍作用。The hardness and alkalinity removal rate of circulating water with treatment time was investigated using the electrochemical method in a cooking enterprise.The experimental parameters including current density,hydraulic retention time,electrode spacing,and commercial scale inhibitor on the electrolysis effect and energy consumption were analyzed.The btained results showed that the hardness and alkalinity removal rates increased first and then stabilized with time,and the alkalinity removal rate was always higher than that of the hardness removal rate.The electrolysis effect was best at a current density of 70 A/m^(2),a hydraulic retention time of 6 min,and an electrode spacing of 3 cm.The hardness and alkalinity removal rate reached 27%,and the unit energy consumption was as low as 13 kWh/kg,suggesting that commercially available inhibitors can inhibit electrolysis.

关 键 词：循环冷却水 电化学 电解效果 单位能耗 阻垢剂 

分 类 号：X784[环境科学与工程—环境工程]