焦化废水处理过程中特征有机污染物组成及降解特性分析
摘要：为了解焦化废水中特征有机污染物组成及其在生物流化床工艺各个阶段的降解特性，采用全二维气相色谱（GC×GC）技术，对不同处理阶段的焦化废水进行了检测，解析了其特征有机污染物的组成和降解规律。结果显示，焦化废水中主要存在有十三大类的特征有机污染物，经两级缺氧和两级好氧处理后所有物质都有所降解但发生的阶段不同，酚类、吡啶类、有机腈类、萘啶类、三唑类、吲哚类物质的降解在缺氧和好氧阶段都有发生，但是喹啉类、咪唑类、酰胺类、酮类、有机胺类的降解主要发生在好氧阶段，明确了各物质在缺氧好氧阶段的不同降解特性。
关键词：焦化废水有机污染物特征种类
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Analysis of organic pollutant characteristics and degradation in coking wastewater
Abstract: In order to understand the composition of characteristic organic pollutants in coking wastewater and their degradation characteristics in each stage of biological fluidized bed process,The coking wastewater in different treatment stages were detected by comprehensive two-dimensional gas chromatography.The results indicated that there were 13 kinds of characteristic organic pollutants in coking wastewater.After two-stage anoxic and two-stage aerobic treatment,all the substances were degraded,but the degradation occured at different stages.The degradation of phenols,pyridines,organic nitriles,naphthyridines,triazoles and indoles occurred both in anoxic and aerobic stages,but quinolines,imidazoles,amides,ketones,indoles and organic amines mainly degraded in the aerobic stage,The different degradation characteristics of each substance in the anoxic and aerobic stage are clarified.
Keywords: Coking wastewater; Organic compounds; Characteristic; Species;
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