This paper studied the process of three main organic components(carbohydrates,proteins,lipids)anaerobic digestion with municipal sludge to inhancing Volatile Fatty Acid(VFA)product. According to the text,VFA achieves maximum production when anaerobic digestion com-bined with protein,the maximum yield reaches 14. 52 g/ L and 43. 47% productivity,increasing 218% and 59% respectively compared to sludge solo anaerobic digestion. Sludge combined with lipid produce only 39% yield of VFA compared to sludge solo anaerobic digestion.%研究了城市有机垃圾的三种主要成分（碳水化合物，蛋白质，脂质）与市政污泥联合厌氧发酵产酸的过程，试验结果表明，蛋白类有机质能大幅提高厌氧发酵效率，其后期产酸量达到14.52 g／ L，挥发酸产率43.47%，分别比污泥单独厌氧发酵提高218%和59%；污泥联合脂质厌氧发酵产酸量最低，仅为单独厌氧发酵产酸量的39%。
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