煤气化废水二级生化处理出水的有机物特征研究

Study on Organic Matter Characteristics of Secondary Biochemical Treatment Effluent from Coal Gasification Wastewater

为了明确煤气化废水二级生化处理出水的水质特征,试验应用超滤对废水进行分子量分级,采用XAD-8树脂进行分离,并进行光谱分析。结果表明,在不同分子量的各组分中,疏水性物质占比大于亲水性物质,其中疏水性中性有机物(HoN)占比最高。三维荧光光谱分析发现,疏水性有机酸(HoA)和HoN腐殖化程度较高,疏水性有机碱(HoB)中芳香族化合物和富里酸类有机物比较多,而亲水性有机物(HI)中富里酸类有机物和溶解性微生物代谢产物较多。

In order to clarify the water quality characteristics of the secondary biochemical treatment effluent from coal gasification wastewater,ultrafiltration is applied to classify the molecular weight of the wastewater,XAD-8 resin is used for separation,and spectral analysis is performed.The results show that among the components with different molecular weights,hydrophobic substances account for a greater proportion than hydrophilic substances,with hydrophobic neutral organic compounds(HoN)having the highest proportion.Three dimensional fluorescence spectroscopy analysis finds that hydrophobic organic acids(HoA)and HoN have a higher degree of humification,and hydrophobic organic bases(HoB)contain more aromatic compounds and fulvic acid organic compounds,while hydrophilic organic compounds(HI)contain more fulvic acid organic compounds and soluble microbial metabolites.