[1]居正,陈停,王冰,等.电絮凝耦合磁性破乳剂处理乳化油废水效能及机制[J].中国给水排水,2026,42(13):76-83.
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电絮凝耦合磁性破乳剂处理乳化油废水效能及机制

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷期数: 2026年第13期页码: 76-83 栏目: 出版日期: 2026-07-01

Title:: Efficiency and Mechanism of Electrocoagulation Coupled with Magnetic Demulsifier for Treatment of Emulsified Oil Wastewater

作者:: 居正¹，陈停²，王冰¹，姚萌³，冉治霖³; （1.沈阳建筑大学市政与环境工程学院，辽宁沈阳 110168；2.湛江市粤海水务投资集团有限公司，广东湛江 524033；3.深圳信息职业技术大学交通与环境学院，广东深圳 518172）

Author(s):: Ju　Zheng¹， Chen　Ting²， Wang　Bing¹， Yao　Meng³， Ran　Zhilin³; （1. School of Municipal and Environmental Engineering， Shenyang Jianzhu University， Shenyang 110168， China； 2. Zhanjiang Yuehai Water Investment Group Co. Ltd.， Zhanjiang 524033， China； 3. School of Traffic and Environment， Shenzhen University of Information Technology， Shenzhen 518172， China）

关键词:: 乳化油废水; 电絮凝; 磁性破乳剂; COMSOL仿真模拟; 界面张力

Keywords:: emulsified oil wastewater; electrocoagulation; magnetic demulsifier; COMSOL simulation; interfacial tension

摘要:: 为了克服电絮凝法处理乳化油废水时存在的效率低下、耗时较长和能耗较高等问题，以纳米Fe₃O₄为凝核、羧甲基纤维素钠（CMC-Na）为黏合剂、聚硫酸铁（PFS）为原料，开发了一种新型磁性破乳剂PCNF，形成电絮凝与磁性破乳剂的联合作用体系。实验结果表明，相较于传统絮凝剂，电化学+PCNF的组合方式展现出更高的除污效率。PCNF的最佳投加量为2.0 g/L，此时乳化油废水中剩余COD浓度为43 mg/L，含油量降至3.72 mg/L。进一步优化PCNF的投加量，当调整投加方案为1.5 g/L PCNF+0.5 g/L氯化钙时，剩余COD浓度为46 mg/L，含油量为5.08 mg/L，且电解时间缩短至90 min；与单独使用PCNF相比，成本显著降低，在实现高效破乳除油的同时，达到了节约成本的目的。利用COMSOL软件模拟乳化油滴聚集过程，发现在电场作用下，油滴的破乳依赖于电场强度和油水界面张力；破乳剂的加入能够减小油水界面张力，从而促进油滴聚集，加速破乳过程。

Abstract:: To overcome the issues of low efficiency, long processing time, and high energy consumption in the treatment of emulsified oil wastewater by electrocoagulation, this study developed a novel magnetic demulsifier (PCNF) using nano-Fe₃O₄ as the coagulation core, sodium carboxymethyl cellulose (CMC-Na) as the binder, and polyferric sulfate (PFS) as the raw material, thereby forming a combined system of electrocoagulation and magnetic demulsifier. The experimental results showed that, compared to traditional coagulants, the combination of electrochemistry and PCNF exhibited higher decontamination efficiency. The optimal dosage of PCNF was 2.0 g/L, resulting in the residual COD concentration of 43 mg/L and the oil content reduced to 3.72 mg/L in the emulsified oil wastewater. Further optimization of the PCNF dosage, by adjusting the addition strategy to 1.5 g/L PCNF + 0.5 g/L calcium chloride, resulted in the residual COD concentration of 46 mg/L and the oil content of 5.08 mg/L, while the electrolysis time was shortened to 90 min. Compared to using PCNF alone, the cost was significantly reduced, achieving efficient demulsification and oil removal while also realizing cost savings. Using COMSOL software to simulate the aggregation of emulsified oil droplets, it was found that under the influence of an electric field, the demulsification of oil droplets depended on the electric field strength and the oil-water interfacial tension. The addition of the demulsifier could reduce the oil-water interfacial tension, thereby promoting oil droplet aggregation and accelerating the demulsification process.

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更新日期/Last Update: 2026-07-01