Fenton法处理竹制品废水生化出水的研究

Research on Fenton Treatment of the Biochemical Processes Effluent of Bamboo Industry Wastewater

采用Fenton法对竹制品废水生化出水的脱色和有机物去除进行了研究.在综合考虑经济性和去除效果的基础上,起始COD质量浓度为430 mg·L-1、色度为1 500倍的废水,在反应条件:t=30℃,pH为3.5,ρ(H2O2)=1 665 mg·L-1,c(Fe2+)/c(H2O2)=0.072,反应时间3 h的情况下,Fenton氧化处理后,COD和色度的去除率分别高达87.5%和94.4%.研究发现,色度的去除率要优于有机物(以COD计)的去除率,且受外界因素影响小.GC-MS分析结果表明:经过Fenton处理后,废水中的发色团和助色团基本上完全被去除.中间产物主要是脂类衍生物,副产品有1-碘十三烷和正辛基醚等.

The decolorization and organic matter reduction of bamboo wastewater using Fenton oxidation was studied.Considering the cost and the removal efficiency,the optimal conditions were t = 30℃,pH = 3.5,ρ（H2O2） = 1 665 mg·L-1,c（Fe2＋） /c（H2O2） = 0.072 and reaction time 3 h,with an initial COD and color concentration of wastewater of 430 mg·L-1 and 1 500 times,under these conditions,the removal efficiency of COD and color could achieve 87.5% and 94.4%,respectively.It was found that the color reduction was higher than that of organics,and less affected by operation factors.The GC-MS analysis revealed that the chromophoric groups and auxochromic groups were greatly removed after Fenton treatment.The intermediates were mainly ester derivatives,and the by-products included 1-iodo-tridecane and 1,1＇-oxybisoctane.