摘要
通过搭建以砂土为主的地下渗滤系统,考察不同干湿比条件对地下渗滤系统污染物净化能力的影响。在水力负荷为0.08 m3/(m2·d)时,设5种运行条件,分别为连续运行及4个干湿比条件(1∶2、1∶1、2∶1、3∶1)。研究表明:干湿运行对地下渗滤系统的净化能力影响显著,其中干湿比为1∶1时污染物净化效果最好,COD、氨氮、TN、TP去除率分别达到90%、95%、70%、85%。建议北方以砂质土壤为主的地区采用地下渗滤系统处理污水时,稳定运行最佳干湿比为1∶1。
Through soil infiltration filter system,the effects of difference dry-wet ratio on the removal efficiency of subsurface infiltration system( SIS) were discussed. At the hydraulic loading of 0. 08 m3/( m2·d),five kinds of operating conditions were set up,dividing the continuous operation and four dry-wet ratio conditions( 1 ∶ 2,1 ∶ 1,2 ∶ 1 and 3 ∶ 1). The results showed that intermittent running was a positive method to enhance the removal efficiency of SIS. The dry-wet ratio of 1∶ 1 had the best removal efficiency that COD,ammonia nitrogen,TN and TP removal rates reached 90%,95%,70% and 90%respectively. Dry-wet ratio of 1∶ 1 in SIS was suggested when used in the north area predominantly sandy soil.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第1期53-56,共4页
Environmental Engineering
基金
国家水体污染控制与治理科技重大专项(2012ZX07202-003
2012ZX07212-001)
关键词
地下渗滤系统
干湿比
砂土基质
生活污水
subsurface infiltration system
dry-wet ratio
sandy soil
domestic wastewater
