关键词: 重质油,  , 炼化污水,  , 生化工艺,  , 污染物组成,  , 傅里叶变换离子回旋共振质谱,  , 气相色谱 - 质谱

Abstract: Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (ESIFTICRMS) coupled with Gas Chromatography Mass Spectrometry (GCMS) were used to analysize the composition of organic pollutants. Based on this, the comprehensive analysis method for heavy oil processing wastewater was established. The comprehensive analysis of biochemical process effluent demonstrated that refractory macromolecular polar organic pollutants and nonpolar alkanes were main components of organic load. The total number of polar organic pollutants was 376, and Ox, NxOx and SxOx were main classes which were presumed to be organic acids, esters and heterocyclic compounds. Most polar organic pollutants were unsaturated molecules with the structure of aromatic ring, polycyclic and heterocyclic. Ncontained heterocyclic compounds and nitrate contributed to highconcentration total nitrogen. COD degradation and nitrogen removal of biochemical process were improved, and advanced treatment of catalytic ozonation was also used which will benefit the heavy oil processing wastewater in order to meet discharge standards.

Key words: Heavy oil,    , Processing wastewater,    ,  Biochemical process,     , Contaminant composition,    ,  ESIFTICRMS,    ,  GCMS