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首页> 外文期刊>International Journal of Electrochemical Science >Decomplexation of Electroplating Wastewater in a Higee Electrochemical Reactor with Rotating Mesh-Disc Electrodes
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Decomplexation of Electroplating Wastewater in a Higee Electrochemical Reactor with Rotating Mesh-Disc Electrodes

机译：旋转网盘电极对高电化学反应器中电镀废水的分解

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摘要

The metal complexes wastewater from electroplating industries is not as easy to be removed as metalions. In this work, the destruction of Cu, Ni and Cr complexes from electroplating by electro-oxidationwas investigated. A novel higee electrochemical reactor with rotating mesh-disc electrodes wasdeveloped to enhance the destruction ratio of metal complexes. The rotating electrodes consisted offour titanium mesh-discs as cathodes and three titanium-based lead dioxide mesh-discs as anodes werecontrolled by the variable speed motor. Some key operation parameters, such as rotation speed ofelectrodes, current density and initial pH of wastewater, were investigated during electrolysis. Theexperimental results showed that the rotation of electrodes enhanced the mass transfer ofelectrochemical process; current density influenced the destruction rate of metal complexes; acid oralkaline conditions were benefit for the destruction of metal complexes. Under the optimal operating2 conditions with initial pH of 11.0, current density of 10 mA/cm and average high gravity factor of1.07, the Cu, Cr and Ni complexes and colority of wastewater decreased to 0.87 mg/L, 0.47 mg/L, 0.64mg/L and 5 times after 120 min electrolysis, respectively.
机译：电镀行业的金属配合物废水不像金属离子那样容易去除。在这项工作中，研究了通过电氧化作用对电镀中的Cu，Ni和Cr络合物的破坏。为了提高金属配合物的破坏率，开发了一种新型的具有旋转网状电极的higee电化学反应器。旋转电极由四个钛网片作为阴极，三个钛基二氧化铅网片作为阳极，由变速电动机控制。研究了电解过程中电极转速，电流密度和废水初始pH等关键操作参数。实验结果表明，电极的旋转增强了电化学过程的传质。电流密度影响金属配合物的破坏率;酸性碱性条件有利于金属配合物的破坏。在初始pH值为11.0，电流密度为10 mA / cm，平均高重力因子为1.07的最佳运行条件2下，废水中的Cu，Cr和Ni络合物和色度分别降至0.87 mg / L，0.47 mg / L，电解120分钟后分别为0.64mg / L和5次。

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