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。该装置成功启动65d后采用分层进水和连续操作的方式进行研究。结果表明,结构改进防止了堵塞,分层进水改善了系统抗冲击负荷的能力,提高了氮的脱除效率。在进水pH为7.8～8.0,HRT>10h的工况下,分流比为1:3时硝化和反硝化过程进行的最佳,此时总氮去除率达到60.34%,与未分流的去除率22.06%相比提高了近3倍。为分散污水的强化脱氮设计提供了新的思路。
A new improved subsurface infiltration setting was built by renovating traditional one. The experiment was continuously conducted to investigate purifying decentralized wastewater through layered inflow. The result indicated that renovative structure could avoid system blocked, and was suit able to hydraulic loading changing and simultaneously TN removal was improved. Under the condition of inflow pH, hydraulic retention time and diffluent ratio maintaining 7.8 -8.0, more than 10h and 1：3 respectively, denitrogenation was optimal, i.e. removal ratie being up to 60.34%, which is nearly four-fold of 22.6%, the removal rate with non-decentralized wastewater, providing new thought path for the reinforced denitrogenation design of decentralized wastewater.
出处
《水处理技术》
CAS
CSCD
北大核心
2007年第8期34-37,共4页
Technology of Water Treatment
基金
国家高技术研究发展计划(863)项目(2002AA601130)
江苏省环保厅农村环境综合治理技术开发与示范(2005012)
江苏省饮用水源环境安全与保障体系研究与示范(BM2006716)
关键词
分散污水
地下渗滤系统
改进
分流
脱氮
decentralized wastewater
subsurface infiltration system
renovation
diffluence
denitrogenation
