| 颤蚓在活性污泥中的生长研究 |
| 摘要点击 4017 全文点击 2211 投稿时间：2007-05-24 修订日期：2007-06-29 |
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| 中文关键词 活性污泥 污泥减量 颤蚓生长 |
| 英文关键词 activated sludge sludge reduction growth of Tubificidae |
| DOI 10.13227/j.hjkx.20080533 |
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| 中文摘要 |
| 以颤蚓为研究对象，活性污泥为底物，通过批量培养实验，考察了颤蚓在20℃和25℃ 2个不同温度下的生长状况.在16周的培养过程中，颤蚓在活性污泥中的生长较好地符合Logistic曲线；25℃更适于颤蚓生长，颤蚓个体在25℃下体重和体长的增长速率分别是0.047?0mg·(条·d)-1和0.193?6 mm·(条·d)-1.同时，颤蚓在25℃下的体重-体长关系式为W=0.008 L2.028（R2=0.868 5），符合颤蚓科蠕虫体重-体长关系式的一般规律.与其它底物相比，以活性污泥为底物时的颤蚓生长并未表现出明显差别. |
| 英文摘要 |
| The growth of Tubificidae was investigated from juvenile to adult stage for 16 weeks by cultivating Tubificidae with activated sludge as substrate in batch tests at two different temperatures (20℃ and 25℃), monitoring changes of body length and wet weight of Tubificidae. Results showed that the growth of Tubificidae well fit the Logistic curve. Temperature of 25℃ was more suitable for worm growth than of 20℃, with the growth rates of wet weight and body length of 0.047?0 mg·(ind·d)-1 and 0.193?6 mm·(ind·d)-1, respectively, at 25℃. Meanwhile, the relationship between body length and wet weight of Tubificidae at 25℃ was determined as W=0.008 L2.028 (R2=0.868 5), which was well in accordance with the common regulation concluded in previous studies. Compared with other substrates, Tubificidae showed little difference on growth when fed with activated sludge. |
