劣质重油加工污水处理场恶臭气体治理工程实践

劣质重油加工污水处理场会排放大量臭气,造成严重大气污染。臭气中,硫化氢、氨气、非甲烷总烃(VOC)对人体危害巨大,是国家恶臭污染排放标准中规范的重点物质。为实现恶臭气体达标排放,利用组合式生物除臭技术(BRI)处理辽河石化炼油污水处理场恶臭气体,开展小试实验实现VOC类物质达标排放后,并将其应用于实际生产过程,持续监测显示:该技术对辽河石化三高型原油炼油污水处理场的高浓度臭气治理效果明显,硫化氢排放速率仅为国标限定值的11.1%,VOC排放速率仅为限定值的0.89%,而氨气则完全实现了零排放。与常规生物技术相比,BRI技术处理效果优异,稳定性能良好,且具有强抗冲击负荷性能,是处理高浓度的含硫、含氮、含烃类恶臭气体的最佳选择之一。

A large number of odorous gases was discharged from tinpot oil process wastcwater treatment plant, and bring serious pollution to atmosphere. In the discharged odorous gases, I-I2S, NH3 and VOCs were great potential dangerous to human health, so they are the key monitoring components in the national stench pollution emission standards. In order to reach the discharge standards of odorous gases, the combined biological deodorization technology was used in Liaohe petrochemical branch company refinery wastewater treatment plant to dispose the odorous gases. When VOCs were meet the emission standards in the pilot-scale experiment, the combined biological deodorization technology was then used in the actual production process, and according to the continuous monitoring data： the treatment effect of this technology is obvious, the discharge rate of H2S was only 11% of the standard value and which of VOCs was just 0.89% of the standard value, what is more NH3 was totally achieved zero emission. Compared to traditional biological treatment technology, BRI technology has better treatment efficiency, higher stability performance, and it has excellent anti-im- pact load property, so it is one of the best choice to treat odorous gas contained high concentration of H2S. NHo and VOCs.