毕业设计（论文）--某万吨日城市污水处理厂的ao工艺设计

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1、毕业设计（论文）--某12万吨日城市污水处理厂的A2O工艺设计某12万吨日城市污水处理厂的A2O工艺设计摘要本次毕业设计的题目为某城市污水处理厂工艺的设计-A2O工艺主要任务是完成该污水处理厂的平面布置各个构筑物的初步设计和一些处理构筑物施工图的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一张污水处理厂工艺流程图一张以及主要构筑物设计图三张在主要构筑物设计图的设计中主要是完成生物池二沉池和接触消毒池的设计该污水处理厂工程规模为12万吨日进水水质见下表污水进水水质单位mgL项目CODcrBOD

2、5NH4-NSSTN0TP0含量27013530135303A2O工艺具有良好的脱氮除磷功能该污水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旋流沉砂池再进入生物池即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泥处理流程为旋流沉砂池产生的垃圾直接外运处置二沉池产生的剩余污泥则运入贮泥池二沉池的回流污泥则通道管道污泥回流泵房再次进入A2O反应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污水处理厂处理后的出水水质要达到《城镇污水处理厂污染物排放

3、标准GB189182002中的一级b标准该标准的具体数据如下表所示出水水质标准单位mgL项目CODcrBOD5NH4-NSSTN0TP0含量0201520151关键词A2O工艺脱氮除磷污水处理污泥处理THEA2OPROCESSDESIGNOFACITYSEWAGETREATMENTPLATEABSTRACTThesubjectofthisgraduationprojectforamunicipalsewagetreatmentplantprocessdesign桝2OprocessfMaintask

4、istocompletethelayoutofthesewagetreatmentplantthepreliminarydesignofthevariousstructuresandconstructionplansofdealingwiththedesignofstructuresTocompletethepreliminarydesignofadesignmanualwastewatertreatmentplantwithafloorplanflowchartofasewagetreatment

5、plantandthedesignofthreemainstructuresdesignofthemaindesignofstructuresmainlyisthebiologicalpoolsecondarysedimentationtankdesignandcontactdisinfectiontankThissewagetreatmentplantprojectthescaleis120000m3dTheinfluentwaterqualityisinthetablebelowInfluent

6、waterqualityunitsmgLProjectCODcrBOD5NH4-NSSTN0TP0Content27013530135303TheselectedA2OprocesshasagoodNitrogenandPhosphorusRemovalThissewagetreatmentplantforthesewagetreatmentprocessissewagefromthecoarsegridtoenhancethepumpingstationthenfromthepumptothefi

7、negridAndthentothecyclonegritchamberthenenteringthebiologicalpoolA2OreactorthenfromthepoolintothesecondarysedimentationtankafterexposuretowaterdisinfectionandthendischargedintothenaturalwaterSludgetreatmentprocessisvortexgritchambersludgeintothesludged

8、ewateringplantdirectlysecondarysettlingtanksludgearealsobroughtintotheworkshopsecondarysedimentationtankproducedreturnedsludgechannelpipesreturnedsludgefromthepumptore-enterA2Oreactoraftertreatmentplantsludgedewateringsludgemudintothest