黑龙江G市污水处理厂的初步设计毕业论文.doc -- 8 元

本科生毕业设计（论文）I摘要本设计是黑龙江G市污水处理厂的初步设计，主要任务是完成污水及污泥处理方法选择、工艺设计计算、污水厂平面图、高程图及单项处理构筑物施工图设计。该城市排放的污水中BOD5、CODcr及SS严重超标，依据污水的水质、水量以及受纳水体的环境容量等相关资料，必须对其进行二级处理方可去除水中过量的有机污染物，达到排放标准进而保护环境，所以本设计采用SBR序列间歇式活性污泥法。SBR是序列间歇式活性污泥法的简称，与传统污水处理工艺不同，SBR技术采用时间分割的操作方式替代空间分割的操作方式，非稳定生化反应替代稳态生化反应，静置理想沉淀替代传统的动态沉淀。它的主要特征是在运行上的有序和间歇操作，SBR技术的核心是SBR反应池，该池集均化、初沉、生物降解、二沉池等功能于一池，无污泥回流系统。经过这个废水处理工艺的废水可达到设计要求，可以直接排放。处理后的污泥经机械脱水后用作肥料。通过此设计，污水处理厂建成后，本市的水污染问题能得到较好的解决，产生良好的环境效益，同时也会收到很好的经济效益和社会效益。关键词SBR工艺污水处理厂城市污水活性污泥本科生毕业设计（论文）IIAbstractThisisthepreliminarydesignofthesewagetreatmentplantofcityGinHeilongjiangProvince.Themaintaskofthisprojectistocompletetheschemeselectionofsewageandsludgetreatmentdesigncomputationanddesignthesewageplanthorizontalplanelevationmapandconstructiondrawingofthemonomerstructure.ThecontentsofBOD5、CODcrandSSofthedischargedsewagehavesurpassedthenationalstandardinthiscity.Itmustbeusedsecondarytreatmenttoremoveexcessorganicpollutantsinsewageinordertomeetdischargestandardsandprotectenvironment，whichisbasedonthequalityandquantityofsewagetheenvironmentalcapacityofthereceivingwaterbodiesandotherrelevantinformation.Therefore，sequencingbatchreactoractivatedsludgeprocesswasusedinthisdesign.SBRistheabbreviationofthesequencingbatchreactoractivatedsludgeprocess.Differentfromtraditionalsewagetreatmentprocess,SBRtechnologyusestosubstitutetimedivisionoperationmodeforspacedivision,nonstablebiochemicalreactionsforstablestate,idealprecipitationforthetraditionaldynamicprecipitation.Themainfeatureisthesequencingandbatchoperation.ThecoreoftheSBRtechnologyisSBRtank,whichsetsallofthefunctionsofhomogenization,primarysedimentation,biodegradationandsecondarysedimentationinatank,andnosludgereturnsystem.Theoutletwateroftheplantmeetsthedesignrequirements,whichisalloweddirectdischargeintorivers.Thetreatedsludgeisusedforfertilizeraftermechanicaldewatering.Waterpollutionproblemsofthiscitycanbesolvedwhenthesewagetreatmentplantiscompleted.Ithasverygoodenvironmentalbenefitseconomicandsocialbenefits.KeywordsSBRprocesssewagetreatmentplanturbansewageactivatedsludge本科生毕业设计（论文）III目录第1章绪论.............................................................................................................11.1概述............................................................................................................11.1.1环境概述.........................................................................................11.1.2本设计的目的和依据.....................................................................11.1.3设计内容.........................................................................................11.2设计原始资料............................................................................................21.2.1气象资料.........................................................................................21.2.2地质资料.........................................................................................21.2.3水质与水量资料.............................................................................21.2.4纳污水体的水文和地质资料.........................................................2第2章工艺设计方案的确定及构筑物的选择.....................................................32.1污水处理厂的选址....................................................................................32.2污水处理工艺流程的确定........................................................................32.2.1工艺流程选择.................................................................................32.2.2可行性方案的确定..........................................................................42.2.3污泥处理工艺流程..........................................................................52.2.4工艺流程方案的确定.....................................................................62.3主要构筑物的选择....................................................................................62.3.1格栅.................................................................................................62.3.2沉砂池.............................................................................................62.3.3初沉池.............................................................................................72.3.4曝气池.............................................................................................72.3.5消毒接触池.....................................................................................72.3.6计量堰.............................................................................................82.3.7污泥浓缩池.....................................................................................82.3.8贮泥池.............................................................................................82.3.9消化池..............................................................................................82.3.10污泥脱水.......................................................................................8第3章污水处理系统工艺设计............................................................................93.1粗格栅的计算.............................................................................................9本科生毕业设计（论文）IV3.1.1原始设计参数..................................................................................93.1.2进水格栅设计..................................................................................93.2曝气沉砂池的计算...................................................................................133.2.1池体计算........................................................................................133.2.2沉砂室尺寸计算...........................................................................143.2.3排砂设备.......................................................................................163.2.4曝气系统设计计算.......................................................................163.3.5放空管...........................................................................................183.3.6撇油...............................................................................................183.3辐流初沉池的计算..................................................................................183.3.1池体计算........................................................................................183.3.2进出水设计....................................................................................213.4SBR池的计算..........................................................................................243.4.1池体计算.......................................................................................243.4.2曝气系统设计与计算....................................................................273.4.3供气量............................................................................................283.4.4空气管道系统计算.......................................................................293.4.5空压机房.......................................................................................313.4.6滗水器...........................................................................................313.4.7进出水管路设计............................................................................313.5消毒接触池..............................................................................................323.5.1接触池尺寸计算...........................................................................323.5.2加氯间...........................................................................................333.5.3排泥设施........................................................................................333.5.4混合装置.......................................................................................333.5.5进出水设计...................................................................................333.6计量设备..................................................................................................34第4章污泥处理系统工艺设计...........................................................................374.1污泥浓缩池..............................................................................................374.2贮泥池......................................................................................................384.3污泥消化池..............................................................................................394.3.1一级消化池构造尺寸...................................................................404.3.2二级消化池构造尺寸...................................................................414.3.3消化池各部分表面积计算...........................................................41