电絮凝椰壳活性炭吸附耦合技术处理亚甲基蓝废水的研究

Study on Methylene Blue Removal by Electrocoagulation/Coconut Shell Activated Carbon Adsorption Coupling in A Batch System

染料废水主要来自印染加工的各道工序,具有水量大、浓度高、色度深的特点。针对染料废水难以自然降解的问题,采用电絮凝与活性炭吸附耦合技术处理亚甲基蓝废水。先后探讨了电极板组合、反应时间、电流密度、极板间距、椰壳活性炭投加量对废水处理效果的影响。结果表明在电解时间60 min,电流密度350 mA/cm^(2),极板间距3.0 cm,活性炭投加量2 g/L时,亚甲基蓝废水去除率可达98.74%。

Dye wastewater mainly comes from each process of printing and dyeing processing,which is characterized by large water volume,high concentration and deep color.Aiming at the problem that dye wastewater is difficult to degrade naturally,the coupling technology of electrocoagulation and activated carbon adsorption was used to treat methylene blue(MB)wastewater.The effects of electrode combination,reaction time,current density,electrode plate spacing and coconut shell activated carbon dosage on wastewater treatment were discussed in the study.MB removal efficiency(98.74%)was obtained under the following parameters:reaction time was 60 min,current density was 350 mA/cm^(2),electrode plate spacing was 3.0 cm,and activated carbon dosage was 2 g/L.