摘要
通过在污水中加入示踪剂 ,研究了人工湿地的水力学特点及其对污水净化效果的影响规律 .结果表明 ,影响水力学各特点的主要原因是湿地植物根系所造成的物理学和生物学上的效应 .水力学各特点与污水净化效果之间存在着密切关系 :出水快、出水量大的系统具有较好的净化效果 ;除无植物系统外 ,停留时间较长的系统有较好的净化效果 ;容水体积大的系统净化效果也较好 ;水力负荷则主要通过影响其他各水力学特点而影响净化效果 .结果表明 。
The hydraulic characteristics of vertical flow constructed wetlands was investigated, and the influence of these characteristics on wastewater purifying efficiency was studied as an emphasis. The results of the experiments in small scale plots and medium scale plots showed the plant roots, with the physical and biological effects, play a significant role in hydraulics and the wastewater purifying efficiency. The other characteristics such as retention time, effluent velocity and influent load also directly affect the wastewater purifying efficiency of constructed wetland. To get a better understanding of the hydraulics will be crucial to the improvement of purifying efficiency and facilitate the practical use of constructed wetland.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第5期45-49,共5页
Environmental Science
基金
国家杰出青年科学基金项目 (3992 5 0 0 7)
欧盟国际科技合作项目(ContractNo.IC18 CT96 0 0 5 9)
关键词
垂直流人工湿地
示踪剂
水力学特点
污水净化效果
废水处理
vertical flow constructed wetland
tracer
hydraulic characteristics
wastewater purifying efficiency
