中文摘要：

用赤子爱胜蚓直接处理脱水污泥，同时以不加蚯蚓为对照，研究蚯蚓对城市污泥氮素矿化特征的影响。结果表明：污泥氮素矿化的主体是微生物，蚯蚓活动对氮素矿化有促进作用。蚯蚓处理对污泥中NH4-N、NO3^--N及矿质氮均有极显著的影响（P≤0．001），其中NO3^-N和矿质氮含量显著增加，分别是原污泥的89倍和4倍，比对照组分别高出了87．75％和30.65％，而NHf—N含量较对照组低34％。与对照组相比，蚯蚓活动对污泥中氮损失没有显著影响。

英文摘要：

To investigate the effect of vermicomposting on nitrogen mineralization in municipal sludge, Eisenia foetida was used for vermicomposting of dewatered sludge, and the comparison experi- ment without earthworms was carried out. The results showed that microorganisms were the main factor affecting nitrogen mineralization, and vermicomposting had a positive effect on nitrogen mineralization in municipal sludge. After vermicomposting, NO3- -N and total mineral nitrogen in sludge significantly in- creased, which were 89 times and 4 times of original sludge, and 87.75 % and 30.65 % higher than those in the control group respectively, while NH4^＋ -N was 34% lower than that in the control group. Compared with the control group, vermicomposting had no significant effect on nitrogen loss.