设计计算说明书—赵可(生物接触氧化工艺)

哈尔滨工业大学本科毕业设计（论文）-I-摘要随着我国经济的高速发展，环境污染问题已经越来越成为制约我国社会经济发展的因素。不解决好环境污染问题，人民的生活质量得不到提高，经济社会发展也终将停滞甚至倒退。本设计是新疆省北部地区北屯市的城市排水工程设计。由城市排水管网系统设计和城市污水处理厂设计两部分组成。排水管网系统设计共做了两套方案，经过经济技术比较，选择方案二作为最终的排水管网设计方案。出于对出水水质的要求，选用生物接触氧化工艺作为污水处理的主体工艺。污水处理的工艺流程如下：中格栅→总提升泵站→细格栅→钟式沉砂池→辐流初沉池→生物接触氧化池→辐流二沉池→紫外消毒接触池→电磁流量计→排入河流。污泥处理作为污水处理厂的附属过程，但又是一个为了保护环境而不可或缺的过程。其主要目的是为了对污泥进行减害化处理和污泥体积减负处理。使用的工艺主要是两级厌氧消化和污泥脱水处理。关键词：排水管网；污水处理；生物接触氧化；脱氮除磷；污泥处理哈尔滨工业大学本科毕业设计（论文）-II-AbstractWiththerapiddevelopmentoftheeconomic,theenvironmentpollutionhasincreasinglybecomeafactorwhichconstrainthedevelopmentofthesocialandtheeconomy.Iftheenvironmentpollutionproblemdoesn’tsolved,thequalityofpeople’slifewillnotimproved,theeconomicandsocialdevelopmentwilleventuallystagnateorevenregresses.ThedesignisadrainagesysteminAcityofBeitunofXinjiangProvince.Itcontainstwoparts,thedesignofthesystemofurbandrainagepipelinenetworksanddesignoftheurbansewagetreatmentplant.Twosetsschemesofthedrainagepipelinenetworkssystemhasbeendesignedaltogether,andchoosethesecendasthefinalschemeaftertheeconomicandtechnicalcomparison.Duetotherequirementsofoutputwaterquality,thedesignchoosesbio-contactoxidationprocessasthemainprocessofthesewagetreatment.Thesewagetreatmentprocessisfollowing:themediumscreen→thefinalliftingpumpingstation→thefinescreen→vortex-typegritchamber→radialflowprimarysettlingtank→choosesbio-contactoxidationprocess→radialflowsecondarysettlingtank→cavitationairflotationtank→UVdisinfectiontank→electromagneticflowmeter→intotheriver.Thesludgetreatmentisasubsidiaryprocessofsewagetreatmentplant,butitisalsoanintegralparttoprotecttheenvironmentintheprocess.Itsmainpurposeistoreduceharmofthesludgeandthevolumeofthesludge.Itmainlyusestwostageanaerobicdigestionandsludgedewatering.Keywords:urbandrainagepipelinenetworks,sewagetreatment,choosesbio-contactoxidation,denitrificationanddephosphorization，sludgetreatment哈尔滨工业大学本科毕业设计（论文）-III-目录摘要.................................................................................................................................IAbstract...........................................................................................................................II第1章绪论....................................................................................................................11.1概述.......................................................................................................................11.1.1城市概况.........................................................................................................11.1.2设计内容.........................................................................................................11.2设计资料...............................................................................................................11.2.1地形与城市规划资料.....................................................................................1第2章排水管网的规划设计........................................................................................42.1排水体制确定及区域划分...................................................................................42.1.1排水区域的划分.............................................................................................42.2排水系统的布置形式...........................................................................................42.2.1污水厂位置的选择.........................................................................................42.2.2污水管道定线.................................................................................................42.3污水管网设计计算...............................................................................................52.3.1污水水量计算.................................................................................................52.3.2污水管网水力计算.........................................................................................52.3.3计算机电算.....................................................................................................7第3章雨水管渠设计....................................................................................................93.1主要设计参数确定...............................................................................................93.1.1暴雨强度.........................................................................................................93.1.2降雨历时.........................................................................................................93.1.3管渠内雨水流行时间.....................................................................................93.1.4径流系数.........................................................................................................93.2雨水管渠的水力计算.........................................................................................103.2.1雨水管渠设计流量.......................................................................................10哈尔滨工业大学本科毕业设计（论文）-IV-3.2.2雨水管渠水力计算的设计数据...................................................................103.2.3汇水面积计算...............................................................................................103.2.4雨水管渠的计算机计算......