CAJ | 학술논문

对低浓度含铜废水（10～50 mg/L）进行了电渗析浓缩实验研究。实验在自制电渗析装置中进行，电渗析反应槽内置交替排列的阴、阳离子交换膜，从而将反应槽分隔成阴、阳极极室、清室和浓室。废水中的铜离子由于电场力的作用透过离子交换膜被富集浓缩。实验分别考察了直流电压、极板间距、通电时间等因素对铜离子去除效率和浓缩倍数的影响，并分析其原因。结果显示，温度20℃、电压8 V、pH=7，极板间距360 mm、通电时间1 h时，铜离子去除效率可达90.4%，浓缩倍数为3.5，清室铜离子浓度为1.44 mg/L。
대저농도함동폐수（10～50 mg/L）진행료전삼석농축실험연구。실험재자제전삼석장치중진행，전삼석반응조내치교체배렬적음、양리자교환막，종이장반응조분격성음、양겁겁실、청실화농실。폐수중적동리자유우전장력적작용투과리자교환막피부집농축。실험분별고찰료직류전압、겁판간거、통전시간등인소대동리자거제효솔화농축배수적영향，병분석기원인。결과현시，온도20℃、전압8 V、pH=7，겁판간거360 mm、통전시간1 h시，동리자거제효솔가체90.4%，농축배수위3.5，청실동리자농도위1.44 mg/L。
This research conducted an experiment on low concentration copper-containing wastewater (10 mg/L to 50 mg/L) by electrodialysis concentration in an electrodialysis device. Anion and cation exchange membranes are alternately installed in the electrodialysis reactive tank,which divided the reactor into anodal chamber,cathodal chamber,dilute chamber and concentrated chamber. Driven by electric field force,the copper ions in the wastewater were concentrated before penetrating through the ion exchange membranes. The experiment investigated the influences of DC voltage,electrode spacing,power-on time and other factors on the copper ion removal efficiency and enrichment factor. The results were analyzed in details. The results showed that copper ion removal efficiency can be as high as 90.4%at 20 ℃,8 V,pH=7,360 mm of electrode spacing,1 h of power-on,,and the enrichment factor can be 3.5,and copper ion concentration in the dilute chamber can be as high as 1.44 mg/L.