中文摘要：

为了解决有机磷农药对环境造成的持久性污染,文章研究了利用厌氧消化法来降解有机磷农药。厌氧消化的原料采用废弃大白菜,有机磷农药采用乐果。利用乐果对乙酰胆碱酯酶具有抑制作用得原理,采用分光光度法测定乐果在废弃白菜厌氧消化系统（湿发酵）中的浓度变化。实验结果表明乐果农药在厌氧消化系统中具有降解趋势,初始乐果滴入量越少厌氧消化罐中的乐果降解周期越短,在实验所设置的厌氧消化系统负荷之下,160 mg·L（-1）的乐果是此系统能够消解的极限。实验结果同时表明,乐果的浓度达到90 mg·L（-1）以上时,逐渐开始出现对厌氧消化系统产沼气的抑制作用,系统的产沼气能力降低,乐果浓度在150 mg·L（-1）以上时已对产气造成了严重抑制。

英文摘要：

The anaerobic digestion was adopted to degrade organophosphorus pesticides of dimethoate in this paper. Waste cabbage was used as raw material for anaerobic digestion. Dimethoate was dropped into the digester. The dimethoate content during the digestion was detected by spectrophotometry. The result showed that dimethoate could be degraded in anaerobic digestion,in which the lower the dimethoate concentration,the quicker the degradation speed,and dimethoate concentration of 160 mg ·L（-1）was the highest degradable concentration in this designed experiment. At the dimethoate concentration of 90 mg ·L（-1）,there began to appear the biogas production inhibition,and when the dimethoate concentration was over 140 mg · L（-1）,the inhibition became serious.