Characterizing Composition and Transformation of Dissolved Organic Matter in Subsurface Wastewater Infiltration System
WANG Li-jun1, 2, LIU Yu-zhong1, ZHANG Lie-yu2*, XI Bei-dou2, XIA Xun-feng2, LIU Ya-ru3
1. School of Environmental and Municipal Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China 2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China 3. Zhongtianyuan Architects & Engineers Ltd., Beijing 100142, China
Abstract：In the present study, the soil column with radius of 30 cm and height of 200 cm was used to simulate a subsurface wastewater infiltration system. Under the hydraulic loading of 4 cm·d-1, composition and transformation of dissolved organic matter (DOM) from different depths were analyzed in a subsurface wastewater infiltration system for treatment of septic tank effluent using three-dimensional excitation emission matrix fluorescence spectroscopy (3D-EEM) with regional integration analysis (FRI). The results indicate that: (1) from different depth, the composition of DOM was also different; influent with the depth of 0.5 m was mainly composed of protein-like substances, and that at other depths was mainly composed of humic- and fulvic-like substances. (2) DOM stability gradually increased and part of the nonbiodegradable organic matter can be removed during organic pollutants degradation process. (3) Not only the organic pollutants concentration was reduced effectively, but also the stability of the DOM improved in subsurface wastewater infiltration system.
王丽君1, 2，刘玉忠1，张列宇2*，席北斗2，夏训峰2，刘亚茹3 . 地下土壤渗滤系统中溶解性有机物组成及变化规律研究 [J]. 光谱学与光谱分析, 2013, 33(08): 2123-2127.
WANG Li-jun1, 2, LIU Yu-zhong1, ZHANG Lie-yu2*, XI Bei-dou2, XIA Xun-feng2, LIU Ya-ru3 . Characterizing Composition and Transformation of Dissolved Organic Matter in Subsurface Wastewater Infiltration System . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(08): 2123-2127.
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