Comparative study on physical and chemical characteristics of sludge vermicomposted by Eiseniafetida

摘要：

　　Prior to vermicompost application to the soils,there is a need to determine the heavy metal concentrations in the final vermicomposts.This study was designed to evaluate the effects of earthworm activity on heavy metals in sewage sludge.Com-pared with before vermieomposting by Eiseniafetida,the results are as follows:(1) water content,the pH value and organic matter content decreased,(2) total nitrogen content increased,total phosphorus content,total potassium content decreased,(3) available nitrogen concentration,available phosphorus content increased and,(4) the total content of five metals (Cu,Ni,Cd,Pb and Zn) decreased,and the bioaccumulation factor (BAF) shows that vermicomposting can efficiently remove heavy metals.Therefore,it can be concluded that the soil use of sludge of the Wastewater Treatment Plant in Huaibei is feasible.

关键词： Eisenia fetida heavy metals vennicomposting wastewater sludge bioaccumulation factor

作者: Fei Liu Pengfei Zhu Jianping Xue

作者单位: College of life sciences,Anhui Key Laboratory of Plant Resources and Biology, Huaibei Normal Uni-versity, Huaibei, China,235000

会议类型: 国际会议

会议名称: The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))

会议地点: 北京

会议语种:英文

页码: 418-423

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）