| 膜分离淡水用于氰化镀镉漂洗水的可行性研究 |
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| 引用本文： | 陈永乐,徐军,沈德华,骆劲松,范正芳.膜分离淡水用于氰化镀镉漂洗水的可行性研究[J].电镀与涂饰,2020(7):431-435. |
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| 作者姓名： | 陈永乐 徐军 沈德华 骆劲松 范正芳 |
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| 作者单位： | 南京源泉环保科技股份有限公司;江苏省环境科学研究院 |
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| 摘 要： | 考察了漂洗水中游离氰、硫酸钠、碳酸钠、钙离子、镁离子、铁离子等的含量及其pH对镉镀件表面腐蚀的影响。结果发现,漂洗水中游离氰的浓度对镉镀件表面的腐蚀起到决定性的作用,漂洗水中游离氰的质量浓度应控制在40 mg/L以下。将膜分离淡水回用于氰化镀镉后的漂洗时,要有足够的回用量,并且根据镀件的形状进行适当调整。
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| 关 键 词： | 氰化镀镉 漂洗水 膜分离 回用水 腐蚀 |
Feasibility study on reuse of fresh water produced by membrane separation as rinse water for cyanide cadmium electroplating |
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| CHEN Yongle,XU Jun,SHEN Dehua,LUO Jinsong,FAN Zhengfang.Feasibility study on reuse of fresh water produced by membrane separation as rinse water for cyanide cadmium electroplating[J].Electroplating & Finishing,2020(7):431-435. |
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| Authors: | CHEN Yongle XU Jun SHEN Dehua LUO Jinsong FAN Zhengfang |
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| Affiliation: | (Nanjing Yuanquan Environmental Science and Technologies Co.,Ltd.,Nanjing 210000,China) |
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| Abstract: | The effects of the contents of free cyanide,sodium sulfate/carbonate,calcium,magnesium,and iron in rinse water and its pH on cadmium-electroplated workpieces after being rinsed were studied.It was found that the concentration of free cyanide in rinse water played a decisive role in the surface corrosion of cadmium-electroplated workpieces.The mass concentration of free cyanide should be controlled below 40 mg/L.For reusing the fresh water produced by membrane separation in rinsing after cadmium electroplating,the amount of fresh water should be sufficient and adjusted properly based on the shapes of workpieces. |
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| Keywords: | cyanide cadmium electroplating rinse water membrane separation reclaimed water corrosion |
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