人工湿地堵塞机理及防堵措施浅析及研究

人工湿地作为一种高效率、低投资、低运行费用、低能耗的污水处理技术，越来越受到世界各国的关注。随着人工湿地的不断推广与应用，堵塞是影响其应用和推广的主要因素之一。湿地发生堵塞后，基质的渗透系数会急剧下降，过水能力也随之降低，大量引入湿地系统的污水直接雍积在湿地表面，长期积水引发恶臭、导致蚊蝇滋生，恶化运行环境。本文通过对人工湿地运行过程中出现的填料堵塞机理与特点进行分析，归纳和总结了人工湿地堵塞的影响因素，提出了人工湿地堵塞相应的解决措施，提高人工湿地对污水的处理效果，以期能够为人工湿地的应用及推广提供参考。

Analysis on Clogging Mechanism of Constructed Wetlands and Clogging Prevention Measures

The constructed wetland technology developed rapidly and received wide attentions because it has the advantages of high efficiency, low investment, low cost and low energy consumption. With the increasing promotion and application of construc- ted wetlands, clogging is the main problem of wastewater treatment technologies in constructed wetlands. When clogging appeared in constructed wetlands, the permeability coefficient of substrate and water decreased sharply. Plenty of wastewater stayed on the wetland surface. Long - term accumulated water initiated odor and caused swarms of flies and deteriorated running environment. A comprehensive analysis on soil clogging phenomena in the operation of constructed wetlands is performed, and the factors related to soil clogging are summarized. The clogging mechanism and models are discussed. Some correlation solutions of avoiding clog- ging and countermeasures for remedying the clogging are put forward. This study improved the efficiency of constructed wetland in wastewater treatment and provided reference for the application and promotion of constructed wetland.