水平潜流人工湿地模型

Horizontal subsurface flow constructed wetland models

人工湿地作为一种新型的处理技术,在水污染控制与水环境修复中具有重要的作用和广阔的应用前景.人工湿地处理工程数量的增多和日趋严格的水质标准促进了其设计手段的进步.本文从水动力学、污染物降解动力学和参数的不确定性3方面入手,系统回顾、评价了水平潜流人工湿地的设计模型,包括负荷法、衰减方程、一级k-C*模型及其若干改进型模型和动态机理模型.在比较上述模型的建立依据和方法的基础上,分析水平潜流人工湿地模型发展的内在关系,指出在工程设计中应用各类模型时需要考虑的主要事项,并对该领域的发展方向进行了展望.

As a new treatment technology, constructed wetland plays an important role and has broad prospects in water pollution control and environmental restoration. Its designing artifice is getting progress owing its increasing application in wastewater treatment coupling with the increasingly strict water quality standards. From the aspects of hydrodynamics, contaminants degradation dynamics and parameters uncertainty, this paper gave a systematic review on the horizontal subsurface flow constructed wetland models, including load approach, regression equation, first-order k - C ＊ model and its reformed forms, and dynamic mechanistic models. Based on the comparison of the assumptions and methodologies of the models, the intrinsic relationships in the development of horizontal subsurface flow constructed wetland models were analyzed, and the main issues of their application in constructed wetland design were indicated, with the perspectives in this field discussed.