【作者】 李传勇； 赵敏燕； 陈雷； 余圆圆； 孙永军；

【Author】 Li Chuanyong;Zhao Minyan;Chen Lei;Yu Yuanyuan;Sun Yongjun;Ningxia Baichuan Technology Co.,Ltd;Nanjing Water Purification Environmental Research Institute Co.,Ltd;School of Environmental Science and Engineering,Nanjing Tch University;College of Urban Construction,Nanjing Tech University;

【机构】 宁夏百川科技有限公司； 南京沃谱瑞环境研究院有限公司； 南京工业大学环境科学与工程学院； 南京工业大学城市建设学院；

【摘要】 研究了单独O₃、O₃/H₂O₂和O₃/H₂O₂/催化剂3种臭氧氧化技术工艺对农药废水的预处理性能。系统研究了O₃投加量、H₂O₂投加量、p H值、反应时间、催化剂投加比例对农药废水的色度,COD和生物毒性去除效果的影响。在最佳工作条件下,可获得51.73%的COD去除率,99.61%的色度去除率和被有效降为低毒的生物毒性。H₂O₂和催化剂可以增强O₃向强氧化性和非选择性的·OH转化的能力,从而降解吸附在催化剂表面或农药废水中的有机化合物。与单独O₃和O₃/H₂O₂工艺相比,O₃/H₂O₂/催化剂工艺可显著提高废水的可生化性及降低废水的毒性。因此,臭氧催化氧化技术是1种适用于农药废水高效预处理工艺。更多还原

【Abstract】 This paper studies the pretreatment performance of pesticide wastewater by three ozone oxidation technologies,O₃ alone,O₃/H₂O₂ and O₃/H₂O₂/catalyst. The effects of O₃ dosage,H₂O₂ dosage,p H value,reaction time,catalyst dosage ratio on the chromaticity of pesticide wastewater,COD and biological toxicity removal effect were systematically studied. Under the best working conditions,COD removal rate of 51. 73%,a chromaticity removal rate of 99. 61% can be obtained,and the biological toxicity is effectively reduced to low toxicity. H₂O₂ and catalysts can enhance the ability of O₃ to convert to strongly oxidative and non-selective ·OH,thereby degrading organic compounds adsorbed on the catalyst surface or in pesticide wastewater. Compared with O₃ and O₃/H₂O₂ processes alone,the O₃/H₂O₂/catalyst process can significantly improve the biodegradability of wastewater and reduce the toxicity of wastewater. Therefore,the ozone catalytic oxidation technology is an efficient pretreatment process suitable for pesticide wastewater.更多还原