Cancer causing compounds such as benzene ring, amidocyanogen and azo radical fouled lake and sea ceaselessly, which not only form great threat to human health but also enormously influence all other forms of life. 每年,大量含有苯环、胺基、偶氮基团等致癌物质的有毒废水不断地排入江河湖海,不仅给我们人类的健康带来了极大的威胁,也给其他生物的生存带来了极大的影响。