超声协同Fenton法与类Fenton法预处理莠去津农药废水研究

针对莠去津农药废水有机物浓度高、含盐量高、有机物难降解等问题,提出了辅以超声协同的Fenton和类Fenton技术进行废水的预处理研究。分别研究了中性条件和酸性条件下,超声协同的Fenton以及类Fenton技术对废水有机物的去除率,并对比单独超声、Fenton以及类Fenton技术。结果表明:辅以超声作用后,TOC去除效果优于单独Fenton和类Fenton技术;针对超声Fenton和超声类Fenton协同技术,相比于中性条件下,酸性条件下能得到更高的TOC去除率,并且超声Fenton技术优于超声类Fenton技术,最高TOC去除率达到48.5%。因此,酸性条件下的超声辅助的芬顿法可作为莠去津农药废水的预处理方法。

Study on pretreatment of atrazine pesticide wastewater by ultrasound coupling with Fenton and Fenton-like methods

Aimed at the problems of high concentration of organics, high salinity and degradation being difficult in atrazine pesticide wastewater, the technologies of ultrasound combining with Fenton and Fen- ton - like were applied in pretreatment of atrazine pesticide wastewater. The TOC removal in waters was investigated by ultrasound ＆ Fenton and ultrasound ＆ Fenton -like under neutral and acidity condition, comparing with ultrasound , Fenton and Fenton -like alone. As a result, hybrid technologies had a bet- ter effect on TOC removal than ultrasound , Fenton or Fenton - like alone. In addition, a better TOC re- moval efficiency was found in ultrasound ＆ Fenton systems than ultrasound ＆ Fenton - like. Further- more, ultrasound ＆ Fenton technologies under acidic condition are suggested to be the optimal pretreat- ment methods for real atrazine pesticide wastewater.