人工湿地废水生态处理系统的作用机制

Mechanisms of constructed wetland wastewater ecological treatment systems

人工湿地废水生态处理新技术的高效去污能力基于独特而复杂的作用机制 ,其中最重要的是湿地基质、大型植物和微生物的高度协同作用。基质在为植物和微生物提供生长介质的同时 ,也能够通过沉淀、过滤和吸附等作用直接去除污染物。大型湿地植物既是微生物的“固定化载体” ,氧气的生产和运输“机器” ,同时还能够稳固湿地床表面 ,起到冬季保温和支撑冰面的作用。微生物是消除污染物的作用者 ,它能够在去除氮。

The mechanisms of the constructed wetland wastewater treatment technology that are available to improve water quality are interrelated and often complex. Among them, the most important is the combination of the substrate, vegetation and microorganisms in wetlands. As a medium for the growth of plants and microorganisms, the substrates can remove directly pollutants by the processes including precipitation, filtration and sorption. Macrophytic plants provide mediums for microorganisms and transfer oxygen by leaves and stems into roots. They also fix wetland surface, which can support ice layer and insulate heat. It's no doubt that microbial populations have removal potential for pollutants. Important transformations of nutrient, such as nitrogen and phosphor result from microbial processes. Organisms are in turn converted to nutrients and energy through microbial processes.