人工湿地控制非点源污染的应用

随着点源污染的有效管理和控制,非点源污染已成为水环境污染的主要原因。人工湿地作为一种控制水环境非点源污染的有效工具,已被世界上很多国家所认可。本文首先简述了非点源污染的危害,其次对人工湿地的概念和类型进行了介绍,论述了人工湿地对非点源污染中氮、磷、重金属和农药等主要污染物的去除机理,最后对人工湿地处理系统的附属设施、水力因素、表土层以及植物收割等应用问题进行了探讨。

Application of Constructed Wetland in Non-point Source Pollution Control

With the effective control of point source pollution, non-point source pollution becomes the main factor of water pollution. As an effective tool to control non-point source pollution, constructed wetlands are increasingly recognized by many countries. In this (paper) the harm of non-point source pollution to water environment is firstly presented. Then the concept and types of constructed (wetlands) are introduced and the removal mechanisms of nitrogen, phosphorus, heavy metals and pesticides in constructed wetlands are summarized. Finally some application problems of constructed wetland treatment systems such as additional facilities, hydrological (factors), topsoil and plant harvest are discussed.