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一、废水处理总体布局和规划准则上海石化是综合性的石油化工企业,生产的产品种类多,污水中的污染物十分复杂。所以在建厂时就根据石化行业污水的上述特点,在着眼于工艺过程污染控制的同时,建立了结合行业特点的污水治理管理体系和处理方法。“分级处理,层层把关”这个污水处理准则就是建厂初制定的。制定这个准则的依据是考虑到石化污水成分复杂、毒性大,而污水处理采用生物处理工艺。实行分级处理可保证污水处理装置微生物的必要生长条件,避免因高浓度有毒废水冲出引起微生物死亡,造成污水不能达标排放,甚至造成环保事故。这项准则规定,各分厂的污水,必须根据各厂不同性质,在设计开始,就要有预处理和一级处理,达到规定标准后才能排到环保中心处理。
First, the overall layout of wastewater treatment and planning guidelines Shanghai Petrochemical is a comprehensive petrochemical enterprises, the production of many types of products, sewage pollutants is very complicated. Therefore, according to the above characteristics of the wastewater from the petrochemical industry when establishing the plant, the wastewater treatment management system and the treatment method combining the characteristics of the industry have been established while focusing on the pollution control of the process. “Grading, Cengcengbaguan ” This sewage treatment guidelines is established at the beginning of construction. The basis for developing this guideline is to take into account the complex composition of the petrochemical wastewater, toxicity, and biological treatment of sewage treatment process. Grading treatment can ensure the necessary growth conditions of the microorganisms in the sewage treatment plant and avoid the death of microorganisms caused by the outflow of high-concentration toxic waste water, resulting in the discharge of sewage not being able to meet the standard and even causing environmental accidents. This standard stipulates that the sewage of each branch must be pre-treated and treated at the first stage of design according to the different nature of the plants. Once the wastewater reaches the prescribed standard, it can be discharged to the Environmental Protection Center.