人工湿地中湿地植物氨氮耐受性研究进展

A review：Tolerance and Inhabitation of Plants to Ammonia in Constructed Wetlands

我国水体富营养化问题日益严重，对废水中氮污染物的排放标准也愈加严格。2012年，环保部对氨氮废水排放量大、氨氮含量较高的行业，如：合成氨工业、纺织染整工业、炼焦工业、畜禽养殖业等行业的污水排放标准有一定幅度的提高，尤其是对氨氮、总氮的要求愈发严格。近年来经过大量中试试验和实际大规模运行，人工湿地被认为是一种集环保、生态、经济于一体的污水处理方式。人工湿地含氮污染物去除主要依靠植物一微生物同化吸收，硝化反硝化，以及基质吸附过滤等四种方式。植物作为人工湿地最明显的生物特征，它在湿地脱氮作用中起着十分重要的作用。本文结合国内外文献相关研究成果，对人工湿地脱氮过程中植物对氨氮耐受性的研究现状进行综述，为利用人工湿地处理高氨氮废水提供参考。

With the growing problem of eutrophication in China, the emission standards for nitrogen pollutants in wastewater has become even more stringent. In 2012, the Ministry of Environmental. Protection has improved the sewage drainage standard, especially the standard of ammonia and total nitrogen. These rules mainly for ammonia nitrogen wastewater, high ammonia nitrogen content of the industry such as： synthtic ammonia industry, textile industry, coking industry, livestock industry. In recent year, according to a large number of large-scale pilot tests and actual operations, constructed wetlands has been considered to be a sewage treatment which is environmental protection, ecology, economy. CW mainly relies on four approach such as.. microbial assimilation and nitrification-denitrification, plant uptake, matrix adsorption and filtration, ammonia volatilization to achieve the goal of nitrogen removal. As the most obvious biological characteristics, wetland plants play a very important role in denitrification in wetlands. This article will review the study of the tolerance of wetland plants to ammonia, and provide a reference for the use of artificial wetland treatment of high ammonia wastewater.