摘要
为强化人工快速渗滤系统对磷的去除效率,优化设计了人工快滤池的结构与滤料组成并进行了处理小区生活污水的小试研究。结果表明,在水力负荷为1.0m.3m-.2d-1,湿干比为1:3的条件下,系统对COD、SS、NH4+-N、TP均有较好的去除效果,进水中COD由142～238mg·L-1降到出水的16～52mg·L-1,SS、NH4+-N以及TP质量浓度分别由进水的143～175mg·L-1、20.19～32.42mg·L-1、2.45～4.23mg·L-1降到出水的7～21mg·L-1、0.92～3.67mg·L-1、0.11～0.38mg·L-1,平均去除效率均在90%以上。与传统的CRI相比,虽然对COD、SS及NH4+-N的去除效果并没有明显的提高,但改进型CRI对污水中TP的去除效率有明显的提高。
To enhance the efficiency of phosphorus removal of constructed rapid infiltration （CRI）,a new style of rapid infiltration structure and filter medium composition was designed and optimized,and the performances of the improved CRI on domestic sewage removal were investigated. The results showed that COD,SS,NH4^＋-N and TP could be removed efficiently when the hydraulic load rate and wet/ dry ratio were operated under 1.0 m^3·m^2·d^-1 and 1：3,respectively. The concentrations of COD,SS,NH4^＋-N and TP in effluent were about at 16～52 mg·L^-1,7～21 mg·L^-1,0.92～1.93 mg·L^-1 and 0.11～ 0.38 mg·L^-1 respectively,which indicated the average removal rate for all items were above 90% when the concentrations in influent were about 142～ 238 mg·L^-1,143～175 mg·L^-1,20.19～32.42 mg·L^-1 and 2.45～4.23 mg·L^-1,respectively. Compared with the traditional CRI,the efficiencies of COD,SS and ammonia removal were not improved obviously,but the efficiency of phosphorus removal was significantly enhanced in improved CRI.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第6期116-118,135,共4页
Technology of Water Treatment
关键词
人工快速渗滤
生活污水
脱氮除磷
constructed rapid infiltration
domestic sewage
nitrogen and phosphorus removal
