摘要
采用不锈钢-铝为电极的电絮凝法对含铜废水进行了处理试验研究,模拟废水铜离子浓度为150 mg/L,以废水中的铜离子浓度和COD去除率为考察指标,在电流密度为15 mA/cm2、极板间距为3 cm、pH值为7、电解时间为120 min的条件下,Cu2+的去除率平均能达到99%以上,COD的去除率亦能达到97%;在此基础上,应用于实际的电路板腐蚀液废水的处理试验,发现Cl-浓度在200 mg/L以上时,对废水先进行相关预处理也能达到较好的处理效果,该研究对进一步探讨Cl-对电絮凝的影响机理有一定的借鉴意义。
Some researches were made on the treatment of copper-containing wastewater by electro-coagulation with stainless steel-aluminum electrodes. The copper ion concentration in the simulated wastewater was 150 mg/L. When the current density was controlled at 0.15 mA/cm2 , electrolyzing time was 120 mi- nutes, the distance between two electrodes was 3cm and pH was 7,the average removal rate of copper ion was over 99% and the removal rate of COD was also above 97%. On this basis,this method was applied to the practical PCB etching wastewater. It was discovered that when the concentration of chlorine ion was over 200mg/L, the pretreatment of wastewater was required to achieve the better effect. This paper is significant in offering the reference for further discussion of the influence of chlorine ion on electro-coagulation.
出处
《安全与环境工程》
CAS
2010年第2期46-50,共5页
Safety and Environmental Engineering
关键词
含铜废水
电絮凝
不锈钢-铝电极
去除率
氯离子
copper-containing wastewater
electro-coagulation
stainless steel-aluminum electrode
removal rate
chlorine iron
