万吨日城市污水处理厂的初步设计

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1、JIUJIANGUNIVERSITY《水污染控制工程》课程设计题目12万吨/日城市污水处理厂的初步设计英文题目ThePreliminaryDesignof120000tons/dayCitySewageTreatmentPlant院系化学与环境工程学院专业环境工程姓名章子霆年级三年级指导教师张蔚萍老师二零一三年五月摘要本次课程设计的题目为某城市污水处理厂初步设计，主要任务是完成该污水处理厂的平面布置、高程布置和各处理构筑物的初步设计。初步设计要完成设计说明书一份，污水处理厂平面布置图1张、污水处理构筑物高程布置图1张。该污水处理厂工程规模为19万吨/日，进水水质见下表表1进水水质

2、（单位：mg/L）指标CODCrBOD5SS氨氮磷酸盐（以P计）数值180140180355.0本次设计所选择的A2O工艺，具有良好的脱氮除磷功能。该污水处理厂的污水处理流程为：污水从粗格栅到污水提升泵房，再从泵房到细格栅，然后到沉砂池，进入初沉池再进入生物池（即A2O反应池），再从生物池进入二沉池，污水再经过接触消毒池后排入自然水体；污水处理厂处理后的出水水质要达到污水排放标准执行污水综合排放标准（GB8978-1996）二级标准。污泥处理流程为：初沉池产生的污泥和二沉池产生的剩余污泥则送入贮泥池，经过贮泥、加药处理后的污泥，进入污泥浓缩脱水车间，最后外运处理。关键词：A2O工

3、艺；脱氮除磷；污水处理AbstractThedesigntopicforthepreliminarydesignofacitysewagetreatmentplant,themaintaskistocompletethepreliminarydesignofthesewagetreatmentplantlayout,elevationlayoutandstructure.Preliminarydesignmustcompletethedesigninstructionbooklet,plantlayoutdiagram1,sewagetreatmentsewagetreatmen

4、tstructureselevationlayoutdiagram1.Thesewagetreatmentplantconstructionscaleof190000tons/day,thewaterqualityareshowninthefollowingtableTable1feedwaterquality(unit:mg/L)IndexCODCrBOD5SSammonianitrogenphosphate(Pmeter)Numerical180140180355.0A2Oprocessthedesignchoice,hasthefunctionofnitrogenandph

5、osphorusremovalofgood.Thesewagetreatmentplantsewagetreatmentprocess:thesewagefromthecoarsegridtothesewageliftingpumpingstation,andthenfromthepumpingstationtothegrid,andthentosinksandpool,andthenintothebiologicalpoolsedimentationtankinthebeginning(A2Oreactor),fromthebiologicalpoolintotwosedime

6、ntationtanks,sewageafterdisinfectingtankbackintothenaturalwater;sewagetreatmentplanteffluentwateraftertreatmenttoachieveeffluentdischargestandardsintegratedwastewaterdischargestandard(GB8978-1996)standard.Thesludgetreatmentprocessfor:itintothemudstoragetankprimarysettlingsludgetanksludgeandtw

7、osedimentationtankproduced,afterstoringmud,addingthesludgeaftertreatment,intothesludgethickeninganddewateringworkshop,finallyoutwardprocessing.Keywords:A2Oprocess;nitrogenandphosphorusremoval;wastewatertreatment目录摘要1Abstract2引言11设计任务书51.1工程设计