吸收光谱法在垃圾渗滤液膜处理技术中的应用研究

用可见-紫外光谱法测定了北神树垃圾填埋场渗滤液及各种膜出水中有机物的分子量分布，其中芳香化合物以分子量小于2 500的为主，而总体有机物随分子量的分布比较分散。测定了膜对不同分子量有机物的去除率。提出了一种可以直接用于垃圾渗滤液红外光谱法测定的制样新方法。根据各种膜出水的三处红外特征吸收峰发生的变化，说明了各种膜都能去除不同分子量和类型的腐殖质，并且估算了垃圾渗滤液中的腐殖质、石油类和动植物油经各种膜过滤后的去除率。

Study on the Application of Absorption Spectrum to the Treatment of Landfill Leachate by Membrane Technology

Molecular weight(MW) distributions of organics in the Bei Shenshu landfill leachate and their permeation from membranes were determined and studied by absorption spectrum,and the removal rates of organics with various molecular weight were measured.A new FTIR preparation method of wastewater sample used in the determination of landfill leachate was proposed in the present paper.The results showed that the aromatics in landfill leachate were mainly related to the the organics with MW<2 500,whereas the distribution of total organics was dispersal comparatively.The removal rates of various humic compounds and oils in landfill leachate were estimated in accordance with the change in FTIR absorbance of permeation from membranes at three characteristic wave numbers 2 930,2 960 and 3 030 cm~(-1),indicating that the defined membrane treatment process can removed organics with relevant MW fractions effectively.