金属催化臭氧化预处理含酚农药废水的研究

含酚农药废水由于其具有较强杀菌能力，在自然界中直接生物降解较难。采用TiO2,NiO,MnO2金属催化臭氧化预处理含酚农药废水，提高其可生化性。研究表明：TiO2,NiO,MnO2金属催化臭氧化可提高农药废水的COD去除率。当TiO2含量为1.5g/L，反应时间为1h，COD去除率为75．2％，BOD5／COD值由开始的0．18升至0．32。另外，溶液的pH值，臭氧含量等因素对农药废水COD去除有影响，当pH为9．5，臭氧含量为13．63mg/L，反应时间为1h,COD去除率为64．3％。

Study of Phenol-containing Pesticide Wastewater Pretreatment by Catalyzed Ozonation

Phenol-containing pesticide wastewater is difficult to bio-degradate. This Paper studied catalyzed ozonation of the pesticide wastewater with solid catalysts-TiO2, MnO2, NiO. It is show that ozonation can change pesticide from bio-refractory to bio-degradation with the best result by using TiO2. When the concentration of TiO2 is 1.5g/L, reaction time is about 60min, COD removal is 75.2%, and BOD5/COD change from 0.18 to 0.32. Whereas, pH, the concentration and the content of the ozonation and the kind of catalysis can influence COD removal rate of the wastewater.