【摘要】 将城市污泥与玉米秸秆进行自然通风堆肥处理 ,应用 GC/ MS检测方法对污泥堆肥中的多环芳烃化合物(PAHs)进行了分析。污泥堆肥中 PAHs的含量较低 ,ΣPAHs和 ΣPAHscarc分别为 0 .5 6 1mg/ kg和 0 .10 7m g/ kg,绝大部分 PAHs化合物的含量低于 0 .0 5 0 mg/ kg,含量较高的主要是中、低分子量的化合物。PAHs的降解效果显著 ,ΣPAHs和 ΣPAHscarc的降解率在 80 %左右 ,绝大部分化合物的降解率在 5 0 %以上 ,中等分子量的 3个和 4个苯环的化合物的降解效果相对较好。污泥堆肥中 PAHs的含量、分布模式及其降解效果与原污泥中 PAHs的特征密切相关更多还原

【Abstract】 Co composting of municipal sludge and maize straw by natural aeration was carried out and polynuclear aromatic hydrocarbons (PAHs) in compost were determined by GC/MS. The content of PAHs in compost was low, ΣPAHs and ΣPAHs carc are 0.561 mg/kg and 0.107 mg/kg respectively and most of compounds are lower than 0.050 mg/kg. Predominant compounds were those with low medium molecular weights. Significant degradation rate of PAHs in compost was found, ΣPAHs and ΣPAHs carc are 80% or so and most of compounds are more than 50%. Greater degradation was observed for those compounds with medium molecular weights and 3 ,4 benzene rings. Concentration, distribution pattern, and degradation rate of PAHs in compost depended to a great extent on the PAHs features in noncomposting municipal sludge.更多还原