| The refinery sewage treatment plant of lanzhou petrochemical company is responsible for the treatment of industrial sewage discharged from the refinery plant,oil storage and transportation,additive co.,LTD,polypropylene and other devices,as well as some rainwater in the refinery area.The treatment technology of refinery sewage treatment plant is three sets of treatment technologies:oil separation,air flotation and biochemical treatment.Part of the structure of the device is in the open air open operation state.In the operation process,a large number of pollution gases escape from the facilities such as oil separation tank,air flotation tank,aeration tank and sludge treatment process.Although the pools with high concentration of polluted gas,such as oil separation ponds and homogeneous ponds,have been closed,the waste gas has only been collected and discharged at high altitude without treatment.July 1,2017,oil refining sewage treatment plant emissions to the national petroleum refining industrial pollutants emission standards,to achieve the standard of the refinery sewage waste gas emissions,waste gas treatment technology based on the existing oil refining industry comprehensive comparison and combining with the characteristics of plant production and final determination by adsorption condensation-biological oxidation combined process of refinery sewage waste gas processing.The waste gas treatment plant was put into operation in June 2017,realizing the hood seal collection of sewage structures.For separation tank,homogeneous pool and other facilities to produce high concentration of exhaust gas desulfurization,adsorption condensation principle is adopted to improve the pretreatment,the armor alkanes and hydrogen sulfide in waste gas treatment and after pool,aeration pool and other facilities of A/O biological treatment on the low concentration gas mixture of,can effectively remove material such as H2S,sulfide,phenol,hydrocarbon,realize the waste gas discharging standard,this article through to the operation of the waste gas treatment plant management analysis of the problems existing in the optimal operation measures are put forward and solutions,has realized the standard device and stable operation and exhaust gas emission.Application of adsorption condensation and biological oxidation technology in combination treatment of refinery sewage treatment plant emissions engineering practice,the results show that this process can effectively remove pollutants in waste gas,emissions index reached GB31570-2015 standards.Putting-in-service proactively project built not only to the sewage treatment plant of lanzhou petrochemical company waste gas pollution control is important,but also for the petrochemical industry waste gas treatment of refinery sewage treatment process play an exemplary role and has great application prospect and popularization significance. |
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