水污染控制工程设计学院：环工学院专业：环境工程姓名：卢勋学号：2901100129指导老师:郭冀峰江南某镇污水处理厂设计学生姓名：卢勋指导教师：郭冀峰（长安大学环境科学与工程学院，2010级环境工程1班）摘要：本设计主要是江南某镇污水处理厂的设计，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B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,这种工艺不仅具备SBR法工艺简单可靠、运行灵活、自动化程度高的特点，而且还具备明显的脱氮除磷功能。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IAsewagetreatmentplantdesigninadistrictoftheSouthernStudent:LuXunAdviser:GuoJifeng(SchoolofEnvironmentalScienceandEngineering,Chang'anUniversity)Abstract:Thedesignismainlytoasewagetreatmentplantinthesouth.ThewaterqualitydischargedofthesewagetreatmentplantmustachieveattheDegreeBqualityinthe“Urbansewagetreatmentplantpollutantdischargestander(GB18918-2002)”.Finally,weadoptthecurrentSBRdeformationformofCASSprocessaccordingtothecomparisonofthefeasibletwoprocessingtechnologyofCASSprocessandoxidationditchprocess.ThistechnologynotonlyhastheSBRmethodissimple,reliableandflexibleoperation,highautomaticdegree,butalsohasobviousfunctionofdenitrificationphosphorusremoval.Theselector,theanaerobiczone,andanaerobiczoneisinlinefromtheinnertooutside.AndtheremovalofnitrogenandphosphorusisbychangingtheCASScellCycle.Therearehorizontalflowsedimentationpool,grille,pumpingstationinthestructureofthesewageplantdesign.Thecondensedsludgeneedtohandleinthesludgedigesterbeforesendingout.Atlast,theformofthesewageplantlayoutadoptstherelevantruleoftheWatersupplyanddrainage.Keywords:Sewagetreatmentplant;CASS;HorizontalflowsedimentationII目录一．绪论..................................................1二、前言..................................................2三、设计任务..............................................3a.目的与任务............................................................3b.设计内容和要求........................................................3c.设计资料..............................................................3四、工艺比选..............................................4a.氧化沟方案............................................................4b.CASS工艺方案.........................................................4c.方案的确定............................................................5五、设计工程计算..........................................7a.污水处理程度的确定....................................................7b.污水水质指标及设计污水水质的确定......................................7c.物理处理单元工艺设计计算..............................................81.中格栅............................................................82.污水提升泵房计算..................................................93.泵后细格栅计算...................................................104.平流式沉砂池.....................................................125.配水井计算.......................................................146.巴氏计量槽计算...................................................16d.CASS处理系统设计....................................................171.设计参数.........................................................1...
