目录摘要………………………………………………………………………1前言………………………………………………………………………21.设计原始资料…………………………………………………………22.工艺比较及选择………………………………………………………22.1污水特征…………………………………………………………22.2工艺比较…………………………………………………………32.2.1普通活性污泥工艺………………………………………32.2.2氧化沟工艺………………………………………………52.2.3SBR工艺…………………………………………………42.2.4AB法工艺………………………………………………42.3工艺选择…………………………………………………………53.设计计算………………………………………………………………63.1污水处理程度的确定……………………………………………63.2污水处理工艺流程的选择………………………………………63.3各处理单元设计计算……………………………………………73.3.1格栅………………………………………………………73.3.2曝气沉砂池………………………………………………83.3.3AB工艺参数……………………………………………93.3.4A段曝气池………………………………………………113.3.5B段曝气池………………………………………………143.3.6A段中沉池………………………………………………173.3.7B段终沉池………………………………………………173.3.8污泥浓缩池……………………………………………183.3.9贮泥池……………………………………………………193.3.10污泥消化池……………………………………………203.3.11污泥脱水机……………………………………………253.4附属建筑物………………………………………………………273.5处理厂规划………………………………………………………273.5.1平面布置…………………………………………………273.5.2高程布置…………………………………………………273.6污水提升泵选择…………………………………………………294.结论……………………………………………………………………30参考文献…………………………………………………………………31致谢………………………………………………………………………32AB法污水处理工艺设计计算摘要：通过分析污水特征和工艺比较，污水处理厂采用AB法污水处理工艺。AB属超高负荷活性污泥法，其设计特点一般为不设初沉池，A段和B段的回流系统分开。A段和B段负荷在极为悬殊的情况下运行。A段污泥负荷高、污泥龄短、产泥量多，B段污泥负荷低、污泥龄长、产泥量较少。两段的沉淀池表面负荷差异也较大。AB法产泥量较大，需设污泥消化工艺，解决污泥处理和出路问题。此外，AB法污水处理厂中的分期建设可缓解资金不足问题，同时使污水得到较大程度处理。本设计中选用的各参数数据参考现运行AB法污水厂的经验数据。关键词:AB法，负荷，设计，参数ThedesignandcalculationofABwastewatertreatmenttechnologyAbstract：Bymeansofanalyzingthesewagecharacteristicandcomparingtreatmenttechnologies,thiswastewatertreatmentplantadoptstheABprocess.ABprocessbelongstotheultrahighloadactivatedsludgeprocess.ThedesignfeatureofABprocessisthattheprimarysedimentationtankisgenerallyunnecessary,andtherefluencesystemsofsectionAandsectionBareseparated.TheloadofSectionAandsectionBareextremelydifferent.SectionAhashighsludgeload,shortsludgeageandmoresludgeproduction,whilesectionBhaslowsludgeload,longsludgeageandlesssludgeproduction.Differenceinthesurfaceloadofprecipitatingtanksinthetwosectionsisnoticeable.ABprocess’ssludgeyieldrateisrelativelyhigh,soitisnecessarytosetupsludgedigesttankstodealwithexcesssludgeproblem.Inaddition,PhasedconstructioninABprocesswastewatertreatmentplantcanalleviatethefunddeficiencyproblem,andmakeitpossibleforthesewagetobetreatedbyahighdegree.Allparameteranddatausedint...
