Characterization of organic matter in process water originating from crude distillation units of lukoil neftohim burgas refinery

The distribution of organic matter in process waters originating from crude distillation units of LUKOIL Neftohim Burgas refinery were determined. The organic matter was identified by gas chromatography-mass spectrometry as the oxygen-containing compounds (naphthenic acids and phenols) and the sulfur-containing species mainly cyclic polysulfides. The levels of phenol compounds and naphthenic acids species were ranged between 0.05 to 24.4 mg/L and 0.05 to 3000 mg/L, respectively. This study showed that the sulphur species were varied between <0.05 to 24.6 mg/L. The result of this research can be generalizable as the deeper understanding of the substance composition in process wastewater and a theoretical basis for their control and reused. The identification of corrosion substances in refinery effluent will be useful for the protection of the technological equipment.