焦化厂污水处理站工艺毕业论文.docVIP

PAGE  PAGE   PAGE \* MERGEFORMAT 27 (此文档为word格式，下载后您可任意编辑修改！) 毕业设计 焦化厂污水处理站工艺设计 摘要：本设计为25000m3d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 major 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 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 ditch; Process Design 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…………………………………………………………………10 2.2.1 工艺设计原则………………………………………………………………………………………10 2.2.2 工艺流程的设计…………………………………………………………………………11 2.3 氧化沟工艺简介…………………………………………………………………………………….11 2.3.1 氧化沟基本特点…………………………………………………………………………………..11 2.3.2 Orbal氧化沟………………………………………………………………………………………12 2.3.3 Orbal氧化沟工艺原理……………………………………………………………………………13 2.4 污水排放…………………………………………………………………………………………….14 3 设计计算………………………………………………………………………………………………15 3.1 格栅的设计及计算………………………………………………………………………………