焦化廠污水处理站工艺设计.docVIP

焦化厂污水处理站工艺设计 摘要：本设计是20000立方米/ 天焦化污水处理厂的设计。焦化废水是该厂污水的主要来源，焦化废水主要污染物有：COD，BOD，氰化氢，氨，悬浮固体，苯酚和苯的化合物。焦化废水的特征是多成分的，组分复杂的，浓度高的，毒性大的，难降解的，所以本设计采用了良好去除有机化合物、氨氮等的方法，如氧化沟法。污水处理厂的处理工艺为：污水→粗格栅→进水泵房→细格栅→平流式沉砂池→奥贝尔氧化沟→二沉池→消毒池→出水。焦化废水中各污染物处理后达到“污水综合排放标准”（一，GB8978-1996）标准。 关键词：焦化废水；氧化沟；工艺设计 Abstract: This design is 20000m3 / d coking plant wastewater treatment plant design. The plant is a major source of sewage wastewater, mainly coking wastewater pollutants are: COD, BOD, cyanide, ammonia, suspended solids, phenol and benzene compounds, coking wastewater is characterized by multi-component, component complexity, concentration high, toxic, biodegradable, so the design uses a good removal of organic compounds, such as ammonia oxidation ditch. Treatment process of the sewage treatment plant are: sewage water → coarse grid →water pumping station → fine grid→ advection grit chamber → Orbal oxidation ditch→ secondary sedimentation tank → Disinfection tank → disinfect pool water. After all pollutants in coking wastewater treatment process in this post have reached the Integrated Wastewater Discharge Standard (a, GB8978-1996) standard. Keywords：Coking wastewater; Oxidation 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………………………………………………………………5 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………………………………………………………………………