State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Bioresour Technol. 2013 Sep;144:595-601. doi: 10.1016/j.biortech.2013.07.025. Epub 2013 Jul 12.
To assess removal efficiency of dissolved organic matter (DOM) in the wastewater treatment plant (WWTP), fluorescence excitation emission matrices (EEM) with parallel factor analysis (PARAFAC) and second derivative synchronous fluorescence (SDSF) were used for the characterization of DOM in wastewater. In A(2)/O process, tryptophan-like and tyrosine-like materials were removed to the much greater extent than that of fulvic-like. The protein-like material might be mostly decomposed by anaerobic and aerobic bacteria in anaerobic/anoxic and oxic zones. C1, C2, I276, I286, AP1 and AP2 were much better in tracing variations of tryptophan-like and tyrosine-like materials than C3, I329 and AF1 in tracing fulvic-like. The number of sampling sites should be reduced, as concentration variations of DOM components were subtle among sampling sites in the oxic zone and secondary sedimentation tank. SDSF may be a useful tool as PARAFAC to monitor removal efficiency of DOM fractions from wastewater in the WWTP.
为了评估污水处理厂（WWTP）中溶解有机物（DOM）的去除效率，采用荧光激发发射矩阵（EEM）结合平行因子分析（PARAFAC）和同步荧光二级导数（SDSF）对废水中的 DOM 进行了表征。在 A(2)/O 工艺中，色氨酸类和酪氨酸类物质的去除程度远远大于富里酸类物质。蛋白类物质可能主要是由厌氧和好氧细菌在厌氧/缺氧区和好氧区分解的。与 C3、I329 和 AF1 相比，C1、C2、I276、I286、AP1 和 AP2 更能追踪色氨酸类和酪氨酸类物质的变化。由于好氧区和二沉池各采样点之间 DOM 成分的浓度变化较细微，因此应减少采样点的数量。SDSF 可能是一种有用的工具，可与 PARAFAC 一起监测 WWTP 中废水 DOM 组分的去除效率。
