全球水资源短缺与污染作为目前人类所面对的重大环境问题，已影响到世界上多个国家。我国水资源总量低，农业、工业用水量较大，水资源显著不足，水污染更加重了水资源的短缺。工业部门是我国主要的用水部门之一，其中，石油炼制业是废水排放量最高的制造业。深度处理、实现工业废水的再利用，能够提高水资源利用效率，是改善 供水能力的有效途径之一。膜技术作为目前工业废水深度处理中较为广泛、先进的处理 技术，有优异的环境与经济效益，在缓解我国面临的水资源短缺问上发挥关键作用。 本设计以石化废水二级出水为研究对象，设计石化废水超滤-反渗透膜技术深度 理工艺，提升系统对有机污染物 COD、氨氮等的分离去除效率以及脱盐率，有效控制排放终端 60 多种废水有机特征污染物，包括苯系物、卤代烷烃、硝基苯类、多环芳烃、多氯联苯、苯胺类物质，在达到《石油化学工业污染物排放标准》(GB31571—2015)的同时，获得用于锅炉和冷却塔的再生水。

As a major environmental problem facing mankind, global water shortage and serious pollution have affected many countries in the world. The total amount of water resources is low in China, the water consumption of agriculture and industry is large, the water resource is significantly insufficient, and the water pollution has aggravated the shortage of water resources. Industry is one of the main water departments in our country, among which the petroleum refining industry is the manufacturing industry with the highest wastewater discharge. Further treatment and reuse of industrial wastewater can improve the efficiency of water resources utilization, which is one of the effective ways to improve water supply capacity. Membrane technology is a broader, advanced treatment technique for industrial wastewater treatment, which has excellent environmental and economic benefits and plays a key role in alleviating water shortage. This design takes the secondary effluent of petrochemical wastewater as the research object, designs the advanced treatment process of petrochemical wastewater ultra filtration reverse osmosis membrane technology, improves the separation and removal efficiency and desalination rate of the system for organic pollutants such as COD, ammonia nitrogen, and effectively controls more than 60 kinds of wastewater organic characteristic pollutants at the discharge terminal, including benzene series, haloalkanes, nitrobenzene, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and aniline, recycled water for boilers and cooling towers while meeting the Emission Standards for Pollutants in the Petrochemical Industry (GB31571-2015).