氧化预处理技术在农药废水处理中的应用研究进展

Use of an oxidation pretreatment technique in pesticide wastewater treatment

随着农药废水中难生物降解化合物的增加,常规的生化处理方法无法完全去除水中的污染物。因此,有必要通过氧化方法对难生化降解的农药废水进行预处理,使废水中的难生化降解物质转化为易于生化处理的小分子化合物。氧化预处理农药废水的技术包括:化学氧化(包括二氧化氯和臭氧氧化)、芬顿法、光催化氧化法和湿式氧化法(包括湿式氧化、催化湿式氧化、超临界催化湿式氧化和催化湿式过氧化)。重点介绍了近年来在农药废水预处理过程中4种氧化预处理技术的进展和应用。

With the increase in pesticide wastewater of compounds that are difficult to biodegrade, conventional biochemical treatment methods cannot completely remove contaminants from wastewater. Thus, oxidation pretreatment technology is needed to transform these substances into smaller molecules that can then be readily degraded biochemically. Pesticide wastewater oxidation pretreatment technology includes chemical oxidation （ClO2 and ozone）, the Fenton reaction, photocatalytic oxidation, wet oxidation （wet air oxidation, catalytic wet air oxidation, super critical wet oxidation, and catalytic wet hydrogen peroxide oxidation）. This paper primarily discusses the development and use in recent years of four oxidation pretreatment techniques used in the pesticide wastewater pretreatment process.