声明本设计由作者孙文鹏本人在李金辉老师的指导下独立完成的,没有抄袭剽窃他人的成果,本人拥有自主知识产权。由此造成的知识产权纠纷由本人负责。摘要关键词:排水系统、排水管道、平流沉砂池、卡罗塞氧化沟、二次沉池第一部分:本部分主要是关于新疆B县的整个排水系统的确定,排水系统是现代化城市不可缺少的重要基础设施,也是城市水污染防治和城市排渍防涝、防洪的骨干工程。排水管道系统是一个庞大而复杂的系统,从已有的研究成果来看,其设计计算主要涉及到多方面的内容.本设计城市近期设计污水量为:24609m3/d远期为:26660m3/d。第二部分:本部分主要是新疆B县污水处理厂设计。该工程所处理的污水主要是由城市工业废水和公共建筑用水以及城市生活用水组成。其混合污水最大日设计流量为Q=26660m3/d,总体变化系数为K=1.5,其中城市设计人口密度为160人/公顷,城市污水排放标准为130L/人,工业污水量为2200m3/d,设计水质经环保部门监测,污废水主要污染物COD、SS、BOD以及重金属和有毒物质少量,其污水水质如下:COD=260mg/l,SS=240mg/l,BOD=200mg/l,年平均温度2—150C,冬季最低温度为—40.10C。处理厂处理水质为:BOD≦30mg/l,COD≦60mg/l,SS≦40mg/l,出水水质符合国家的二级排放标准。本设计中,采用氧化卡罗塞沟处理该城市污水。处理构筑物主要有平流沉砂池、氧化卡罗塞沟、二次沉淀池等,其主要构筑物卡罗塞氧化沟有2组平行的氧化沟,处理程度大大提高,该系统具有高效,节能的优点,且耐冲击负荷高,出水水质好。ABSTRACTKeywords:Drainagesystem、Drainagepipe、StratosphericChenshapool、CarrouselOxidationditches、ChenPool2Part1:ThispartismainlyaboutthefixtureofwholedrainagesystemintownBofxinjiangprovince.Drainagesystemisanecessaryfacilityofamordencity,whichisalsoamainstayprojectagainstcitywaterpollution、citywaterloggingandflooding.Drainagepipeisahugeandcomplicatedsystem,accordingtoresearchachievement,thedesigncalculationrefertoseveralaspects.Theshort-termdesignpollutionwaterofthedesignedcityis24609m3/d,thelong-termis26660m3/dParttwo:Thispartismainlyabout“ThedesignofasewagetreatmentplantabouttownBinxinjiangprovince。Thedirty(abandon)waterofthisprojectismainlycomposedofcityindustrialeffluentandcitypublicbuildingsewageaswellascitysewage.Themixedsewagedischargedofabiggestdayis26660m3/d.TotalchangecoefficientKis1.5,wherethedesignpopulationdensityis160Cap/hectareandthedesignsewagedischargedbyaCapis130L.Theindustrialeffluentofthecityis2200m3/d.Dirtyuselesswater,ofwhichmajorcontanmintisCOD,SS,BOD,aswellasheavymetalwichisanalyzedbythesurroundingprotectiongovement.Thequalityofdirtywaterdischargedfromthecityisasfollows:COD=260mg/l,SS=240mg/l,BOD=200mg/l.Theaveragetemperatureinatotalyearis2—150C,andthelowesttemperatureinwinteris—40.10C.Aftergetdisposedinthesewage,thewaterqualityisasfollows:BOD≦30mg/l;COD≦60mg/l;SS≦40mg/l,accordingtothestandedleveltwowaterdischarginginourcountry.Inthisdesign,theoxidizeditchhandlingofcarrouselmodelisused.ThemaindealingconstructionincludesStratosphericChenshapool、carrouselOxidationditches、ShenPool2andsoon,inwhichthemostimportantbuildingoxidizeditchhandlingofcarrouselhastwoparalleloxidizeditch,whichincreasesdealingextentiongreatly.Therearemanyadvantagesinthissystem,forexample,highefficiencyandeconomyaswellasbearingheavyshockandabetterdealingquality.目录设计说明书..........................................................6第一部分城市排水管网的设计.........................................6第1章设计概述.....................................................61.1设计依据、原则、任务、要求..................................61.1.1设计题目..............................................61.1.2设计依据..............................................61.1.2设计编制原则..........................................61.1.2设计任务..............................................61.1.2设计要求..............................................71.2设计内容....................................................71.3B县原始资料................................................7第2章城市排水体制的确定...........................................82.1方案一:分流制...............................................82.1.1分流制的定义..........................................82.2.2分流制的优缺点........................................82.2方案二:合流制...............................................92.1.1合流制的定义..........................................92.2.2合流制的优缺点........................................92.3方案确定原则................................................92.4方案确定....................................................9第3章排水管网设计..................................................93.1确定排水区界及划分排水流域..................................93.1.1排水区界..............................................93.1.2排水流域.............................................103.2排水管网定线...............................................103.2.1排水管网定线原则.....................................103.2.2定线的影响因素.......................................103.2.3定线方案比较.........................................103.3排水管网水量计算说明.......................................113.3.1水量计算方法与步骤...................................113.3.2水量计算公式说明.....................................113.4管网水力计算说明...........................................113.4.1水力计算的目的.......................................113.4.2水力计算的设计数据...................................123.4.3水力计算的方法具体规定:.............................123.4.4进行管道水力计算时应注意的问题.......................123.4.5水力计算的结果.......................................13第二部分污水处理厂的设计说明.....................................14第1章工艺流程的确定..........................................141.1城市污水处理的现状和发展...................................141.1.1目前存在的问题.......................................141.1.2今后的发展趋势.......................................141.2污水处理中生物方法的比较...................................151.2.1适合于中小型污水处理厂的除磷脱氮工艺.................151.2.2SBR工艺和氧化沟工艺的比较...........................161.2.3氧化沟的选择.........................................161.3工艺流程的确定..........................