采用三维荧光技术,结合荧光区域一体化积分的分析方法,研究了一个表面流+垂直流复合人工湿地处理两条污染河流废水中水溶性有机物的荧光特征变化,结果表明:(1)该人工湿地中水溶性有机物腐殖质的主要来源为生物代谢输入而非陆源输入;(2)在表面流人工湿地的后段,部分类蛋白类物质转化为类富里酸类物质,表明经过表面流人工湿地处理之后,水溶性有机物的组成成分发生显著变化,并且有机物结构趋于稳定.而垂直流人工湿地对类腐殖酸物质峰具有明显的削弱作用;(3)表面流人工湿地对水溶性有机物的结构转化意义重大,可以显著提高水溶性有机物的稳定性.表面流+垂直流的复合人工湿地工艺对水溶性有机物具有良好的去除效果.

Using three-dimensional fluorescence technology,we studied fluorescent characteristics of two polluted rivers by a surface flow+vertical flow combined constructed wetlands of dissolving organic matter.The results showed that (1) the main sources of water-soluble humic organic matter in constructed wetland was biological metabolic input instead of terrigenous input;　(2) in the later section of the surface flow constructed wetland,part of proteinoid substance changed into fulvic acid-like substance,which showed that the composition of dissolved organic matter and material structure tended to be stable after surface flow combined constructed wetland treatment;　(3) it was of great significance that surface flow constructed wetland in structure transformation of water soluble organic matter,which could significantly improve the stability of water soluble organic matter.Surface flow+vertical flow combined constructed wetland process of dissolved organic matter had a good removal effect.