摘要
对传统型的地下渗滤系统进行了改进，建立了一套新型的地下渗滤试验装置。采用两种不同的进出水方式对此渗滤系统的启动周期进行了比较试验，结果表明：在进水CODc，为250-400mg／L、氨氮为70～100mg／L时，初期采用间歇进水的方式可使启动周期缩短为18d；稳定运行时HRT为6h，COD去除率可达79％以上。此研究为新型地渗系统的设计提供了思路。
A new improved subsurface infiltration setting was built by renovating the traditional one. The experiment was conducted to investigate the startup time under the two types of inflow wastewater, continuous and non-continuous. The result indicated that the new system startup time was reduced to 18d in the mode of interim inflow under the condition of COD of sewage range between 250 and 400 mg/L, and NH4＋-N between 70 and 100 mg/L. COD removal efficiency can reach 79% while the hydraulic residence time（HRT） maintains more than 6h. The result may provide a solution for designing a renovating subsurface infiltration system.
出处
《安全与环境工程》
CAS
2007年第1期39-42,共4页
Safety and Environmental Engineering
关键词
分散污水
土地处理
地下渗滤系统
启动周期
改进
decentralized wastewater； land treatment； subsurface infiltration system
startup time； renovation
