Abstract:

Eco-filter system is a kind of new technology to meet the special request of the wastewater treatment in urban areas, which influence 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.