焦化厂污水处理站工艺设计毕业设计焦化厂污水处理站工艺设计摘要：本设计为25000m3/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：Thisdesignis25000m3/dcokingplantwastewatertreatmentplantdesign.Theplantisthemajorsourceofsewagewastewater,cokeplantwastewaterarethemainpollutants:COD,BOD,cyanide,ammonia,suspendedsolids,phenolandbenzenecompounds,cokingwastewaterischaracterizedbymulti-component,componentcomplex,theconcentrationhigh,toxic,biodegradable,sothedesignusesagoodremovaloforganicmatter,ammoniaandotheroxidationditch.Treatmentofthesewagetreatmentstationprocess:sewagewater→coarsegrid→Waterpumpingstation→Finegrid→AeratedGritChamber→Orbaloxidationditch→Secondarysettlingtank→Disinfectiontank→disinfectedpoolwater.Thepollutantsincokeplantwastewatertreatmentbythisprocesshasreachedthe"IntegratedWastewaterDischargeStandard"(a,GB8978-1996)standard.Keywords：Cokingwastewater;Oxidationditch;ProcessDesign目录1绪论............................................................................................................................................................51.1选题背景……………………………………………………………………………………………….51.2处理焦化废水目的及意义……………………………………………………………………………..51.3焦化废水的处理方法………………………………………………………………………...............61.3.1物化法…………………………………………………………………………………....................61.3.2生化法………………………………………………………………………………………………72设计说明………………………………………………………………………………………………102.1设计资料…………………………………………………………………………………….............102.1.1工艺参数…………………………………………………………………………………………..102.1.2具体工作内容……………………………………………………………………………………..102.2污水处理工艺流程的设计………………………………………………………………….............102.2.1工艺设计原则………………………………………………………………………………………102.2.2工艺流程的设计…………………………………………………………………………..............112.3氧化沟工艺简介…………………………………………………………………………………….112.3.1氧化沟基本特点…………………………………………………………………………………..112.3.2Orbal氧化沟……………………………………………………