摘要
生活污水的蚯蚓生态滤池工艺是在污水生物处理反应器中引入蚯蚓,改善生态滤池的处理环境,提高处理效率,适宜用于农村生活污水处理。以蚯蚓生态滤池(+E)和普通生态滤池(-E)为试验对象,研究了蚯蚓活动对生态滤池基质微生物功能群落结构及代谢特征的影响。结果表明,土壤微生物群落碳源代谢能力随土壤深度的增加而逐渐减小,不同深度的微生物群落碳源代谢特征已基本分异;相比无蚯蚓对照滤池,蚯蚓活动对0～20cm各基质层微生物群落碳源利用能力有显著促进作用,基质土壤微生物群落的丰富度、均匀度和优势度均得到增强;同时,在蚯蚓作用下,蚯蚓生态滤池0～5cm和5～10cm基质层的微生物群落差异减小。蚯蚓通过掘穴、摄食、排泄等生理行为影响了生态滤池0～20cm基质层的土壤微生物群落功能多样性状况。
Eco-filter system is a kind of new technology to meet the special request of the wastewater treatment in urban areas,which influences the factors on the sewage treatment,improve the treat efficiency.An experiment with utilizing biolog microplate technique was conducted to investigate the effects of earthworm activities on the metabolic properties and functional diversity of the soil substance microbial in the eco-filter （＋ E） and control eco-filter （-E）.The results showed that the average metabolic activities of the soil substance microbial community carbon source was higher in the upper layer than the lower part,the soil microbial community at all depths was significantly different by the carbon sources utilization.Compared with the control treatment,there were higher microbial ability of carbon source utilization and the richness,evenness and superiority of microbial communities were enhanced with earthworm activities.The average metabolic activities of the soil substance microbial community carbon source were also improved with the presence of earthworms,and the diverseness were diminished with presence of earthworms.The functional diversity of the soil substance microbial in the eco-filter was changed by burrowing,feeding,excretion of earthworms ＇ physiological behaviors.
出处
《中国农学通报》
CSCD
北大核心
2011年第32期162-167,共6页
Chinese Agricultural Science Bulletin
