摘要
为解决硫化染料染色废水的处理难题,选择六种不同金属作为阳极、石墨作为阴极,通过电絮凝技术对硫化黑染色废水进行处理,观察废水色度、电絮凝效果和电极表面腐蚀情况,确定适宜的阳极材料。在直流稳压电源体系中,以施加电压、电解时间、极板间距、初始pH为影响因子设计正交试验,探究絮凝物质量、上清液化学需氧量(COD)、色度及反应过程中电极损失率等影响因子的显著性,综合评价废水处理效果。结果表明:镁阳极可使处理后上清液色度降低,絮凝时间和极板间距对电絮凝效果影响较大。最佳电絮凝条件为:施加电压8 V,电解时间20 min,初始p H为9,极板间距为2 cm,此时废水的COD去除率为44%,色度降为90倍,电极损失率为12.23%,絮凝物质量达1.124 6 g。
In order to solve the treatment problems of sulfur dye dyeing wastewater,six different metals are selected as anodes and graphite as cathode to treat the sulfur black dyeing wastewater by electrocoagulation technology.By observing the chromaticity of wastewater,the effect of electrocoagulation and the corrosion of electrode surface,the appropriate anode material is determined.In the DC regulated power supply system,orthogonal experiments are designed with the applied voltage,electrolysis time,electrode plate spacing,and initial pH as the influencing factors to explore the significance of the affecting factors such as the quality of flocculants,the COD and chromaticity of the supernatant and electrode loss during the reaction process,and comprehensively evaluate the wastewater treatment effect.Wastewater is treated under the optimal process conditions of the above indexes.The results show that the magnesium anode can reduce the chromaticity of the treated supernatant,and the flocculation time and electrode plate spacing have a greater influence on the electrocoagulation effect.The optimum conditions are applied voltage 8 V,electrolysis time 20 min,initial pH 9,plate spacing 2 cm.Under the condition,the COD removal rate of the wastewater is 44%,the chromaticity is reduced to 90 times,the electrode loss rate is 12.23%,and the flocculent mass reaches 1.124 6 g.
作者
姚继明
张维
穆玉广
张子君
谢源
YAO Jiming;ZHANG Wei;MU Yuguang;ZHANG Zijun;XIE Yuan(College of Textile and Garment,Hebei Technology Innovation Center for Textile and Garment,Hebei University of Science&Technology,Shijiazhuang 050018,China;China National Textile and Apparel Council Key Laboratory of Electrochemical Technology,Shijiazhuang 050018,China)
出处
《印染》
CAS
北大核心
2023年第10期12-17,共6页
China Dyeing and Finishing
关键词
废水处理
电化学技术
电絮凝
阳极金属材料
硫化黑
wastewater treatment
electrochemical technology
electrocoagulation
anode metal
sulfur black
