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城镇污水生物滤池处理工艺设计1-目录摘要.........................................................................................................................................2第一章、绪论.............................................................................................................................41．1我国水环境污染的特点................................................................................................41．2我国城市水现状............................................................................................................41．3水污染的危害及防治....................................................................................................51．4污水处理厂建设的必要性............................................................................................7第二章、污水处理厂设计计算..................................................................................................92．1基本资料与概况.............................................................................................................92．1．1总论.....................................................................................................................92．1．2污水处理工艺方案比较.....................................................................................102．2污水处理系统..............................................................................................................152.2.1格栅..........................................................................................................................152.2.2沉砂池.....................................................................................................................182.2.3初沉池.....................................................................................................................232.2.4曝气生物滤池.........................................................................................................262.2.5接触消毒池与加氯时间.........................................................................................312．3污泥处理系统............................................................................................................322．3．1剩余污泥泵房.....................................................................................................322．3．2污泥浓缩池......................................................................................................332.3.3贮泥池................................................................................................................352.3.4浓缩污泥提升泵房..............................................................................................352.3.5污泥脱水间..........................................................................................................362.3.6污泥棚..................................................................................................................36第三章构筑物和设备一览表................................................................................................363.1污水处理厂总体布置................................................................................................393.1.1总平面布置..........................................................................................................393.1.2高程布置............................................................................................................41第四章土建与公用工程........................................................................................................42城镇污水生物滤池处理工艺设计2-第五章投资估算....................................................................................................................42参考文献...................................................................................................................................45摘要针对目前城市污水处理能力不足的现状，以及各类污水对环境造成的污染等问题，现在各地区都急需建造更多的污水处理厂来处理污水，于是开设了中等城市污水处理厂设计这个课题。通过这个题目的设计，掌握中等城市污水处理厂设计的方法，掌握污水处理工艺的原理和流程，掌握处理工艺中各构筑物的设计计算，了解开展科学研究设计的一般程序，设计满足国家及省市污水排放标准。因此探讨中等城市污水处理厂设计是个具有实际意义的课题。主要内容是中等城市污水处理工艺的选择以及污水处理厂的污水处理设施（如提升设施、反应池、二沉池、曝气生物滤池等）、污泥处理设施（污泥浓缩池、脱水设备等）、再利用设施（砂滤池、堆肥等）和管理设施（电气室、操作室、办公室、化验室等）的平面布置、设计与计算。重点解决的问题是污水处理设施中二级处理和深度处理的各个构筑物的尺寸计算以及对污水处理厂进行合理的平面布置。关键词：格栅，提升泵房，平流式沉砂池，曝气生物滤池，辐流式沉淀池，混合池，接触池，污泥浓缩池，污泥脱水泵房。城镇污水生物滤池处理工艺设计3-AbstractTothecurrentsituationthaturbansewagedisposalisinsufficientatpresent,andallkindsofsewages,tosuchquestionsasthepollutionthattheenvironmentcause,etc.,everyareaneedsbuildingmoresewagetreatmentplantstodealwiththesewagebadlynow,thenopenedthesewagetreatmentplantofmedium-sizedcityanddesignedthissubject.Throughthedesignofthistopic,graspthemethodthatthesewagetreatmentplantofmedium-sizedcitydesigns,graspprincipleandprocedure,sewagedisposalofcraft,isitdealwithcraftallstructuresofdesignscalculatetograsp,understandthatlaunchesthegeneralproceduredesignedinscientificresearch,designandsatisfythecountryandprovinceandcitysewagedischargestandard.Soitisasubjectwithrealsignificancetoprobeintothesewagetreatmentplantofmedium-sizedcityanddesignThemaincontentischoiceofthesewagedisposalcraftinthemedium-sizedcityandsewagetreatmentfacilitiesofthesewagetreatmentplant(Suchaspromotingfacilities,responsepool,twosinksthepool,BiologicalAeratedFilter,etc.),mudtreatm