乙烯装置污水回用循环水技术研究与应用

根据乙烯装置外排污水特点与循环冷却水系统工况条件，石油化工科学研究院开发了回用污水处理工艺和污水回用循环水水质稳定技术。该技术在茂名分公司乙烯装置上的应用结果表明，外排污水经"BAF+氧化+过滤"组合工艺适度处理后，水质达到循环冷却水要求；水质稳定技术可以保证回用污水的循环冷却水系统满足生产装置长周期运行的要求；乙烯装置污水适度处理回用循环水技术工艺流程短、技术可靠、工程投资少、运行成本低、具有良好经济效益。

RESEARCH AND APPLICATION OF RECYCLING WASTEWATER TO CIRCULATING WATER SYSTEM IN ETHYLENE PLANT

The recycle of wastewater is an effective way to reduce fresh water consumption and wastewater discharge. According to the characteristics of wastewater and working conditions of circulating water systems in ethylene plant, a wastewater pretreatment and water quality stabilizing technology for recycling pretreated wastewater to circulating water systems was developed and applied in the ethylene plant of SINOPEC Maoming Company successfully. The application results show that the quality of treated wastewater can meet the make-up water standard for industrial circulating water system by using the pretreatment procedure composed of BAF, oxidation and filtration. The water quality stabilizing technology well keeps the circulating water system contained recycle wastewater for a long-term and stable running. This combined technology possesses the advantages of short processing scheme, less investment, reliable and low operation cost, thus providing good economic effect.