臭氧化降解呋吗唑酮模拟废水的实验研究

对极难生物降解性呋吗唑酮模拟废水进行了臭氧化处理研究,考察了臭氧进气量、pH、HO·清除剂的消除、臭氧投加量、废水初始浓度、催化剂等对反应的影响,并对反应动力学进行了初步探讨。在持续强碱性溶液中,臭氧自分解产生HO·,能快速且无选择性地氧化呋吗唑酮为二氧化碳、水、氮气及少量小分子有机醛和酸,在模拟废水质量浓度为500mg/L,最佳pH12.8,臭氧投加量2g/L,BOD5/CODCr>0.3时,可生化性显著提高;臭氧投加量6g/L时,脱色率达100%,CODCr和TOC去除率分别达到95.9%和95.2%,水中有机物基本完全矿化。

Investigation on the degradation of furaltadone simulated wastewater by ozonization

The effects of the ozone inflow,pH value,removal of the hydroxyl radical inhibitor,ozone dose,initial wastewater concentration and catalyst on the reaction has been studied by using ozonization process to degrade bio-refractory furaltadone simulated wastewater.The reaction kinetics has also been explored.Results show that the self-decomposition of ozone at high pH values results in the formation of hydroxyl radicals,which can oxide furaltadone rapidly into CO 2 ,H 2 O,N 2 ,ounce small-molecular-weight organic aldehyde and acid.When500mg/L wastewater is at optimal pH12.8,and the ozone dose is2g /L,the BOD 5 /COD Cr is over0.3.The biodegrad-ability has been improved remarkably;when the ozone dose is6g /L,the removal rates of chroma ,COD Cr and TOC are100%,95.9%and95.2%,respectively.The organic substances are almost entirely mineralized.