摘要
对蚯蚓生态滤池处理太湖流域农村生活污水进行现场试验研究。通过对蚯蚓同化容量与污染负荷进行单因素分析,得出蚯蚓生态滤池处理农村生活污水的运行参数与运行方式,并据此进行连续运行试验。结果表明,在表面水力负荷1m3/(m2.d)、湿干比(布水时间和落干时间之比)1∶3、蚯蚓负荷(以单位体积填料中蚯蚓的质量计)12.5g/L的条件下,蚯蚓生态滤池处理农村生活污水具有可行性与高效性,单级系统的COD、总氮、氨氮和总磷的去除率分别在81%、66%、82%和89%左右。改进蚯蚓床填料、设计通风结构和采取适宜运行方式,是蚯蚓生态滤池成功应用于农村生活污水处理的三大重要因素。
The rural sewage was treated by Animalcule-earthworm Ecofiher in the Taihu watershed,and field tests were conducted. According to the results with single factor experiments, including earthworm load and pollutant load, the optimal operating parameters of Animalcule-earthworm Ecofilter for treating rural sewage were utilized. Tested under these operating conditions, the field test results showed that under the hydraulic surface loading 1 m^3/（m^2 .d）, flooding time/drying time = 1 ： 3, earthworm load 12. 5 （g earthworm）/（L filling）, Animalcule-earthworm Ecofilter for treating rural sewage received good results. Single-stage system removed COD,TN, NH4^＋ -N,TP perfectly,the corresponding removal rates were 81%, 66%,82%, 89% respectively. The following results were confirmed： improving filler components, promoting ventilation and taking appropriate operating conditions were three main factors that Animalcule-earthworm Eeofilter can treat rural sewage successfully.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2008年第12期11-16,共6页
Environmental Pollution & Control
基金
国家高技术研究发展计划项目(No.2002AA60101221B)
教育部工程研究中心项目(No.WTWER0716)
江苏省科技厅资助项目(No.BS2007148)
关键词
蚯蚓生态滤池
农村生活污水
表面水力负荷
现场试验
Animalcule-earthworm Eeofilter
rural domestic sewage
hydraulic surface loading
field test
