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针对染料中间体废水高盐、高COD的特点,本实验采用混凝沉降为预处理,并考察了混凝剂投加量的影响.之后采用电渗析耦合生化系统的后处理模式,对预处理后的废水做进一步的脱盐、脱COD.电渗析阶段考察了不同电压(15、20及25 V)及流量(15、20及25 L/h)下的废水处理情况.最终阶段采用A-O生化处理模式对废水内的COD做进一步的脱除.结果表明,当混凝剂投加量为50 mg/L,电渗析采用20 V恒压与20 L/h的流量,生化阶段连续处理100 h时,废水的处理情况达到最佳,脱盐率达到了98％,COD的脱除率达到了99％以上,由49 000 mg/L降到了285 mg/L.“,”Due to the high salt and high COD characteristic of dye wastewater,the pretreatment by the coagulation sedimentation was applied in this experiment,and the influence of coagulant dosage was investigated.After the post-processing by electrodialysis coupling biochemical systems,the desalination and COD removal was further studied.At the stage of electrodialysis,the treatment efficiency with applied voltages of 15,20,25 V and the flux rate of 15,20,25 L/h was synthetically studied.At the final stage the biological treatment mode was used to remove COD.The results showed that when the coagulant dosage was 50 mg/L and at the constant voltage of 20 V and flux rate of 20 L/h and the biological stage continuously processed 100 h,the process achieved the best results,and the desalination rate reached 98％,the COD removal rate reached more than 99％,which decreased from 49 000mg/L down to 285 mg/L.