焦化厂污水处理毕业设计.pdf

焦化厂污水处理站工艺设计 焦化厂污水处理站工艺设计 3 摘要：本设计为25000m /d 焦化厂污水处理站设计。该厂污水的主要来源是焦化废水，焦化废水的 主要污染物质有：COD 、BOD 、氰化物、氨氮、悬浮物、苯酚及苯系化合物等，焦化废水的特点 是成分多，组分复杂、浓度高、毒性大、难降解，所以本设计采用具有良好去除有机物、氨氮等的 氧化沟法。该污水处理站的处理工艺流程为：污水→粗格栅→进水泵房→细格栅→曝气沉砂池→奥 贝尔氧化沟→二沉池→消毒池→出水。焦化废水中各污染物经此工艺流程处理后均达到了《污水综 合排放标准》（一级，GB8978-1996 ）标准。 关键词：焦化废水；氧化沟；工艺设计 Abstract：This design is 25000m3 / d coking plant wastewater treatment plant design. The plant is the maj or source of sewage wastewater, coke plant wastewater are the main pollutants: COD, BOD, cyanide, ammonia, suspended solids, phenol and benzene compounds, coking wastewater is characterized by multi-component, component complex, the concentration high, toxic, biodegradable, so the design uses a good removal of organic matter, ammonia and other oxidation ditch. Treatment of the sewage treatment station process: sewage water → coarse grid → Water pumping station → Fine grid → Aerated Grit Chamber → Orbal oxidation ditch → Secondary settling tank → Disinfection tank → disinfected pool water. The pollutants in coke plant wastewater treatment by this process has reached the Integrated Wastewater Discharge Standard (a, GB8978-1996) standard. Keywords：Coking wastewater; Oxidation ditch; Process Design 1 焦化厂污水处理站工艺设计 目录 1 绪论5 1.1选题背景……………………………………………………………………………………………….5 1.2 处理焦化废水目的及意义……………………………………………………………………………..5 1.3 焦化废水的处理方法………………………………………………………………………6 1.3.1 物化法…………………………………………………………………………………6 1.3.2 生化法………………………………………………………………………………………………7 2 设计说明………………………………………………………………………………………………10 2.1 设计资料……………………………………………………………………………………10 2.1.1 工艺参数…………………………………………………………………………………………..10 2.1.2 具体工作内容……………………………………………………………………………………..10 2.2 污水处理工艺流程的设计………