摘要： 研究了某石油化工污水处理厂气浮-水解酸化-循环式活性污泥法（CAST）-水解酸化-曝气生物滤池（BAF）工艺运行过程中对碳、氮和硫污染物的去除效果，对溶解性有机物变化和去除规律进行了分析。结果表明，COD、TOC、TN、SO₄^2-、S^2-的去除率分别为90.6%、92.7%、45.20%、48.8%、97.1%。溶解性有机物主要为不饱和烃和芳香族衍生物；第一水解酸化池能有效去除具有单苯环的芳香烃衍生物，生成苯甲酸、石油醚以及色氨酸类代谢产物；CAST池中的易降解有机物消耗殆尽，腐殖化程度迅速增加，并在第二水解酸化池达到最大；BAF出水含有难降解的不饱和脂肪酸和苯甲酸类中间产物。

关键词: 石油化工污水, 溶解性有机物, 光谱分析

Abstract: The removing effects of carbon,nitrogen and sulfur pollutants in the operation process of air floatation-hydrolytic acidification-circulation activated sludge(CAST)-hydrolysis acidification-biological aerated filter(BAF) in a petrochemical wastewater treatment plant have been investigated. The variation and removing law of dissolved organic matter have been analyzed. The results show that the removing rates of COD,TOC,TN,SO₄^2- and S^2- are 90.6%, 92.7%,45.20%,48.8% and 97.1%,respectively. DOM mainly consists of unsaturated hydrocarbons and aromatic derivatives. The first hydrolysis tank could effectively remove the aromatic hydrocarbon derivatives having single benzene rings,generating benzoic acid,petroleum ether and tryptophan metabolites. Easily degradable organic matter in CAST tank is consumed up,as a result,the degree of humification increases rapidly and reaches the maximum in the second hydrolysis tank. BAF effluent contains refractory unsaturated fatty acids or benzoic acid intermediates.

Key words: petrochemical wastewater, DOM, spectroscopic analysis

中图分类号: 

• X703