颤蚓在活性污泥中的生长研究  

Growth of Tubificidae in Activated Sludge

作　　者：诸晖[1] 魏源送[1] 刘俊新[1] 

机构地区：[1]中国科学院生态环境研究中心,北京100085

出　　处：《环境科学》2008年第5期1342-1347,共6页Environmental Science

基　　金：国家自然科学基金项目(5040821);国家高技术研究发展计划(863)项目(2007AA06Z347)

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0.0470mg.(条.d)-1和0.1936 mm.(条.d)-1.同时,颤蚓在25℃下的体重-体长关系式为W=0.008L2.028(R2=0.8685),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.The growth of Tubiflcidae was investigated from juvenile to adult stage for 16 weeks by cultivating Tubiflcidae 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 0,0470 mg·（ind·d）^-1 and 0.1936 mm·（indvd）^-1, respectively, at 25℃. Meanwhile, the relationship between body length and wet weight of Tubificidae at 25℃ was determined as W = 0. 008 L^2.028 （ R^2 = 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.

关 键 词：活性污泥 污泥减量 颤蚓生长 

分 类 号：X703[环境科学与工程—环境工程]