复合垂直流人工湿地对TN去除效果的正交试验  

Orthogonal Experimental Studies on Influence of Intergrated Vertical Flow Constructed Wetland on Total Nitrogen Removal

作　　者：李芳[1] 王全金[1] 

机构地区：[1]华东交通大学土木建筑学院,南昌330013

出　　处：《湖北农业科学》2011年第14期2859-2863,共5页Hubei Agricultural Sciences

基　　金：国家"十一五"科技支撑计划重点项目(2008BAD96B04);江西省教育厅科学技术研究项目(2007GZC0843)

摘　　要：以农村生活污水为研究对象,通过正交试验设计,考察了复合垂直流人工湿地系统在选定的影响因素及水平下对污水中TN的去除效果。通过四因素三水平的正交试验,在控制进水碳氮比、水力负荷、pH值及流程高度的情况下,测定湿地系统对TN的去除效果,以寻求优化的因素组合。结果显示,间歇运行的复合垂直流人工湿地系统对TN有良好的去除效果,4个控制因素进水碳氮比、水力负荷、pH值及流程高度对污水中TN的处理效果具有极显著影响,当进水碳氮比为8,水力负荷为40 mm/d,pH值为7,流程高度为1 000 mm时,湿地系统对污水中TN的去除效果最佳。Taking the rural domestic wastewater as the object of study,under the selected factors and levels,the total nitrogen removal by integrated vertical flow constructed wetland（IVCW） was investigated through orthogonal test.By orthogonal test of 4 factors and 3 levels,in the case of controlling C/N,hydraulic loading,pH value,and the distance of the flow water,the total nitrogen removal by the wet system was determined in order to search the optimal combination of factors.The results showed that intermittent operation of IVCW had a good total nitrogen removal,four control factors had significant influences on the total nitrogen removal from rural domestic wastewater,when the influent C/N was 8,hydraulic loading was 40 mm/d,pH value was 7,the distance of flow water was 1 000 mm,the effect of wetland system on the removal of total nitrogen in sewage was best.

关 键 词：复合垂直流人工湿地 正交试验 TN 

分 类 号：X703.1[环境科学与工程—环境工程]