摘要
建立了一个用电Fenton法处理污水的装置,寻找到了最佳处理条件。对于高色度、高COD的印染废水,用电Fenton法COD去除率可达50%-70%,脱色率可达98%。使用微量添加剂后,COD去除率可达91%,色度进一步下降;COD降至60mg/L以下,完全达到工业废水排放标准。使用硫酸锰和硝酸锌微量添加剂可显著提高电Fenton法的COD去除率。这两种微量添加剂,以前尚未见过报导。
An electrochemical apparatus was set with electro-Fenton Method to treat dye wastewater.In the eletrolytical bath,the Na_2SO_4 was used as the supported electrolyte,the carbon was used as the cathode and the iron was used as the anode.When the dye wastewater was electrolyzed,air was exported on the cathode.With the electrochemical methods,H_2O_2 was produced on the cathode in the electrolytic cell,then H_2O_2 reacted with Fe^(2+) dissolved on the anode to produce Fenton reagent.Fenton reagent was used as an oxidant in the treatment of dye wastewater.Several factors affecting the COD removal ratio and color removal of the dye wastewater,such as electrolysis volt,PH values,electrolysis time were given respectively.The results showed that the COD removal ratio was about 50%-70% and the color removal rat was 98% in condition of PH=6,electrolysis volt=15V,and electrolysis time=1h,temperature=25℃.Based on the above electrolysis conditions,the 0.2g/L MnSO_4 or 0.5g/L Zn(NO_3)_2 was added to the dye wastewater,the results showed that COD removal ratio was raised to 91%.It has not been reported earlier that using MnSO_4 or Zn(NO_3)_2 can improve COD removal ratio dramatically in electro-Fenton method.It was exploited in our laboratory.
出处
《常熟高专学报》
2004年第4期45-47,52,共4页
Journal of Changshu College
