给排水毕业设计污水厂设计说明书

河海大学文天学院本科毕业论文I摘要现如今我国社会发展迅速，尤其是经济，随之而来的就是更多的环境污染，因此现在更多的人对环保投入了更多的注意，而在所有这些环境污染中，水污染是一个十分严重的问题，没有水，人类就无法存活，水资源对我国社会的长期发展尤为重要。与此同时我们也可以看到，水治理工程在我国得到了蓬勃的发展，全国大多的城市都对老城区的给排水管网进行了改造，并且还兴建了一大批污水处理厂对城市的生活污水，工业废水进行处理。本设计是江苏省南通市市老坝港的污水处理厂的设计。其设计内容主要包括：污水处理厂工程。本次设计均采用了国家最新的相关规定、标准和设计规范。据计算，确定污水处理厂的远期规模为16800吨/天，考虑到该地区夏季主风向为北面方向及河流走向，污水厂将修建在老坝港的东部。结合污水的水质情况，经过方案比较，本设计采用卡鲁塞尔氧化沟为主处理工艺。经处理后的污水排入北凌河。污水处理流程如下：原污水→中格栅→提升泵站→细格栅→沉砂池→氧化沟→二沉池→消毒池→出水。关键词:污水处理厂;卡鲁塞尔氧化沟；二级处理。河海大学文天学院本科毕业论文IIABSTRACTNowadays,oursocietydevelopsrapidly,especiallytheeconomy.Thefollowingresultismoreenvironmentpollution,somanypeoplehavepaymoreattentiontoenvirmentprotection.Ofallthesepollution,waterpollutionisaseriousproblem,nowater,nolife.Waterresourcebecomesmoreimportantconsideringthelong-termdevelopmentofoursociety.AtthesametimewecanseewatertreatmentprojecthavegotafastdevelopmentinChina,Thecityinthewholenationalmostreformdrainpipenet.Andstillbuiltthedirtywateroflargequantitydisposalthefactorytodiscardthewatertoproceedtohandletocity.ThisprojectisadrainagedesignfortheLaobagangofNantongcityinJiangsuprovince.Thedesignmainlyincludeswastewatertreatmentplan.Andthisdesignrestsonthenationallatestrelatedstipulation,thestandard,andthedesignstandard.IthasbeencalculatedanddeterminedthatthedesignsaleofsewagetreatmentplantinLaobagangis16800t/d,inforward.Takingintoaccounttheprevailingwinddirectioninsummerandtherunningdirectionofriver,thewastewatertreatmentplantwillbebuiltintheeastdistrict.Combinedwiththewaterqualityofeffluentaftertheprogramcomparison,thisdesignusestheTheAnaerobic-Anoxic-Oxicasthemainprocess,whichcanbeeffectiveatremovingnitrogenandphosphorus,andmeetthedesignrequirements.ThetreatedsewagewillbedischargedintotheBeilingriveratlast.Sewagetreatmentprocessisasfollows:Rawsewage→Thegrid→Pumpstations→Finegrid→Gritchamber→Carrouseloxidationditch→Secondarysettlingtank→Disinfectiontank→OutofWater.Keywords:WastewaterTreatmentPlant;Carrouseloxidationditch;Takingoffthenitrogenandthephosphorus;Secondarytreatment.河海大学文天学院本科毕业论文III目录绪论..............................................................................1第一章设计概论....................................................................21.1设计任务...................................................................21.2该地区的综合概况...........................................................21.2.1地理位置.............................................................21.2.2地形地貌，工程地质及水文地质.........................................21.2.3设计水量与水质.......................................................2第二章污水管网设计................................................................42.1排水系统体制的确定.........................................................42.1.1排水系统规划设计原则.................................................42.1.2排水系统体制的选择...................................................42.2污水管网平面布置...........................................................52.2.1污水管段及其划分.....................................................52.2.2污水管网平面布置.....................................................52.4污水管道的设计计算.........................................................62.4.1参数要求.............................................................62.4.2设计管段.............................................................72.4.3生活污水量总变化系数.................................................72.5管道计算...................................................................8第三章污水处理厂设计..............................................................83.1污水处理厂址选择...........................................................83.2污水污泥处理工艺选择.......................................................93.2.1水质.................................................................93.2.2污水、污泥处理工艺选择...............................................9工艺流程的选择.............................................................133.4主要生产构筑物工艺设计....................................................133.4.1进水泵房............................................................133.4.2细格栅和沉砂池......................................................133.4.5鼓风机房............................................................143.4.4二次沉淀池..........................................................14河海大学文天学院本科毕业论文IV3.4.5配水集泥井..........................................................143.4.6污泥浓缩池..........................................................143.4.7脱水车间............................................................14第四章污水厂构筑物的设计计算......................................................144.1中格栅设计................................................................144.1.1格栅的设计要求......................................................144.1.2设计参数............................................................154.1.3中格栅的设计计算....................................................154.2提升泵站的设计............................................................184.2.1设计参数............................................................184.2.2水泵站设计流量和扬程的确定..........................................184.2.3水泵机组的选择......................................................194.2.4集水池容积及其布置..........................