摘要
利用人工配水模拟城镇污水处理厂尾水,采用两套垂直潜流人工湿地系统对其进行处理。结果表明:在处理负荷为36,108,216 L/d,水力停留时间为3,1,0.5 d时,两套系统均对COD具有良好的去除效果,COD平均去除率均在75%以上;种植芦苇的系统对TN去除有一定优势,其TN最高去除率能比种植空心菜的系统高出25%;两套系统对TP的去除效果无显著性差异,其去除率能达到90%左右;两套系统对COD、TN、TP的去除主要集中在系统的前1/3段,系统的后2/3段保证了出水的水质。两套系统均有较强的抗水力冲击负荷能力。
The paper used synthetic wastewater to simulate tail water of municipal wastewater treatment plant,and two kinds of vertical-flow subsurface constructed wetland systems were employed. The experiment results indicated that when treatment loading was 36,108,216 L / d,and the calculated hydraulic retention time（ HRT） was 3,1,0. 5 d,high removal rate of COD was observed in both two systems,and the removal rates were all over 75%; the wetland system with Phragmites australis planted had some advantage in TN removal,and the highest removal rate was 25% higher than that of the wetland system with Lpomoea aquatica planted; both two systems had nearly the same removal rate of TP at about 90%; the removal of COD,TN and TP in two systems mainly happened in a third section in the front of the systems,and the later two-thirds section of the systems ensured the quality of effluent water. Two systems could resist the hydraulic loading fluctuation.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第9期74-77,138,共5页
Environmental Engineering
基金
水体污染控制与治理科技重大专项(2012ZX07103-004)
关键词
垂直潜流人工湿地
城镇污水
植物
污水处理
vertical-flow subsurface constructed wetland
municipal wastewater
plant
sewage treatment
