CASS工艺污水处理厂设计计算书

台州学院2012届毕业设计学号：0836240060台州学院毕业设计计算书设计题目：广州市某区污水处理厂设计设计编号：BYSJ-02-WS-11学院：建筑工程学院专业：给水排水工程班级：2008级（2）班姓名：指导教师：王志勇完成日期：2012年4月17日答辩日期：2012年4月18日I广州市某区污水处理厂设计学生姓名：指导教师：王志勇（台州学院建筑工程学院，2008级给水排水工程2班）摘要：本设计主要是广州市某区污水处理厂的设计，该污水厂出水水质要求达到《城镇污水处理厂污染物排放标准》(GB18918—2002)一级A标准和绿化水质标准，经过对可行的两种处理工艺CASS工艺与氧化沟工艺的比较，最终采用现行的SBR变形形式CASS工艺。CASS工艺主体部分采用圆形利浦罐形式，污水从内圆向外流，从内到外依次是选择器、厌氧区，好氧区，通过改变CASS池的循环周期来达到氮磷的最佳去除。该污水厂设计的构筑物有平流沉淀池，格栅，提升泵房等构筑物。污泥经过污泥浓缩后再经过消化池消化处理，最后再外运。最后在污水厂平面布置的形式上采用《给排水设计手册》相关规定。关键词：污水处理厂；CASS；平流沉砂池IIAsewagetreatmentplantdesigninadistrictofGuangzhouStudent:Adviser:WangZhiyong(CollegeofCivilEngineeringandArchitecture，TaizhouUniversity)Abstract:ThedesignismainlytoasewagetreatmentplantinGuangzhou.ThewaterqualitydischargedofthesewagetreatmentplantmustachieveattheDegreeAandthestanderofGreeningwaterqualityinthe“Urbansewagetreatmentplantpollutantdischargestander(GB18918-2002)”.Finally,weadoptthecurrentSBRdeformationformofCASSprocessaccordingtothecomparisonofthefeasibletwoprocessingtechnologyofCASSprocessandoxidationditchprocess.ThebodyoftheCASSprocessadoptsthecircularPhilipscansformsandthesewageisfromtheinnercircletobeout.Theselector,theanaerobiczone,andanaerobiczoneisinlinefromtheinnertooutside.AndtheremovalofnitrogenandphosphorusisbychangingtheCASScellCycle.Therearehorizontalflowsedimentationpool,grille,pumpingstationinthestructureofthesewageplantdesign.Thecondensedsludgeneedtohandleinthesludgedigesterbeforesendingout.Atlast,theformofthesewageplantlayoutadoptstherelevantruleoftheWatersupplyanddrainage.Keywords:Sewagetreatmentplant;CASS;Horizontalflowsedimentation、目录中文摘要.....................................................................................................................................I英文摘要...................................................................................................................................II1引言........................................................................................................................................11.1设计任务及依据..........................................................................................................11.1.1设计任务............................................................................................................11.1.2设计依据............................................................................................................11.2设计水量、水质、出水要求及该污水厂设计规模..................................................11.2.1污水量................................................................................................................21.2.2污水水质............................................................................................................21.2.3出水要求............................................................................................................21.2.4工程设计规模....................................................................................................22工艺设计方案的确定............................................................................................................22.1原水水量及水质分析..................................................................................................22.2污水处理程度..............................................................................................................32.3污水处理工艺流程选择..............................................................................................32.3.1氧化沟方案........................................................................................................42.3.2CASS工艺方案..................................................................................................42.3.3方案的确定........................................................................................................62.3.4工艺流程图........................................................................................................62.4污水厂各处理构筑物的计算与选型..........................................................................72.4.1中格栅计算........................................................................................................72.4.2污水提升泵房计算..........................................................................................102.4.3泵后细格栅计算..............................................................................................112.4.4沉砂池设计计算..............................................................................................142.4.5巴氏计量槽计算..............................................................................................172.4.6CASS池计算....................................................................................................192.4.7污泥提升泵房..................................................................................................252.4.8滤池设计计算..................................................................................................25、2.4.9接触消毒池计算..............................................................................................263污泥的处理与处置...................................................................................................