污水处理厂毕业设计说明书

青岛理工大学毕业设计I摘要本次毕业设计的题目为胶南第二污水处理厂工艺设计。主要任务是完成个该地区污水的处理设计。胶南第二污水处理厂的建设规模：60000m3/d；原水水质：CODCr:600mg/L，BOD5:300mg/L；SS:450mg/L；NH3-N:45mg/L；TN:55mg/L；TP：7mg/L；pH：6-9要求处理后水质达到国家《城镇污水处理厂污染物排放标准》（GB18918-2002）一级A标准的要求：CODCr≤50mg/L，BOD5≤10mg/L，SS≤10mg/L，NH3-N≤5mg/L，TP≤0.5mg/L。本文根据其进水水质、水量及出水情况，分析比较了各种污水处理工艺，确定该污水处理厂采用倒置的A/A/O工艺，产生的污泥经浓缩、脱水后外运。主要设计内容包括：污水处理工艺选择及各工艺单元的设计(包括工艺流程的确定及各单体构筑物的设计)；污泥处理工艺设计，(包括工艺流程的确定及各单体构筑物的设计)；污水处理厂的平面及高程布置(包括污水处理厂处理构筑物和辅助构筑物的平面图及高程图的绘制)。关键词：污水处理，倒置A/A/O工艺，构筑物，工程，设计青岛理工大学毕业设计IIABSTRACTThegraduationdesigntopicforthesecondjiaonansewagetreatmentplantprocessdesign.Themaintaskistocompleteatheregionofthesewageprocessingdesign.Jiaonansecondsewagetreatmentplanttheconstructionscale:60000m3/d;Theoriginalwater:CODCr:600mg/L,BOD5:300mg/L;SS:450mg/L;NH3-N:45mg/L;TN:55mg/L;TP:7mg/L;pH:6-9forhandlingthewaterqualitytoachieveafterthecountrytheurbansewagetreatmentplantemissionsstandards(GB18918-2002)level1Astandardrequirements:CODCrthan50mg/L,morethan10mg/LBOD5,SSthan10mg/L,NH3-Nthan5mg/L,TPthan0.5mg/L.Inthispaper,accordingtothefeedwaterquality,waterandwatersituation,analysesandcomparestheallkindsofwastewatertreatmentprocess,determinethesewagetreatmentplantusingtheA/A/Oprocess,thesludgeproducedbytheenrichment,sinotransafterdehydration.Themaindesigncontentincludes:choosingthewastewatertreatmentprocessandtheprocessofdesignunit(includingprocessflowandthedeterminationofthemonomerstructuresdesign);Thesludgetreatmentprocessdesign,(includingprocessflowandthedeterminationofthemonomerstructuresdesign);Sewagetreatmentplantstheplaneandelevationlayout(includingsewagetreatmentplantstructuresandauxiliarystructuresplanandelevationdrawing).KEYWORDS:wastewaterTreatment,reversedA/A/Oprocess,constructbuilding,design,engineering青岛理工大学毕业设计目录摘要.................................................................................................................................................IABSTRACT..........................................................................................................................................II前言................................................................................................................................................11设计任务...................................................................................................................................31.1主要内容及要求...........................................................................................................31.1.1设计目的...........................................................................................................31.1.2设计要求...........................................................................................................31.2主要技术参数...............................................................................................................31.2.1处理水量...........................................................................................................31.2.2污水水质...........................................................................................................32工艺方案的选择.......................................................................................................................42.1工艺方案选择的原则...................................................................................................42.2原污水的生化处理可行性...........................................................................................42.3工艺流程的组成...........................................................................................................52.3.1机械(一级)处理工段........................................................................................52.3.2二级生物处理工段...........................................................................................52.3.3污泥处理工段...................................................................................................62.4可供选择的方案比较...................................................................................................62.4.1常规A/A/O工艺(方案一)...............................................................................72.4.2倒置A/A/O工艺(方案二)...............................................................................82.5综合分析.......................................................................................................................92.6污水消毒工艺方案比较...............................................................................................93污水处理厂设计计算.............................................................................................................113.1处理负荷.....................................................................................................................113.1.1水力负荷.........................................................................................................113.1.2污染负荷.........................................................................................................113.2污水处理工艺单元设计计算.....................................................................................123.2.1粗格栅..........................................