都市生活污水处理厂简介

1都市生活污水處理廠簡介國立成功大學環境工程學系環工概論課程講義鄭幸雄教授2都市生活污水處理廠簡介傳統廢水處理程序0級3柵欄2.5cm沉澱槽初澄清都市生活污水處理廠簡介4都市生活污水處理廠簡介初級澄清5回流泵二級沉澱池曝氣槽都市生活污水處理廠簡介6都市生活污水處理廠簡介散氣式曝氣器7絲狀菌群假分支式SludgeVolumeIndex污泥沉降體積指標Volumeofsettledsludge,30min,mL/LSVI=-----------------------------------------------------------gVSS/L都市生活污水處理廠簡介8柱塞式迴流渠溝加氯消毒槽都市生活污水處理廠簡介9甲烷化槽水解酸化槽厭氧污泥消化程序都市生活污水處理廠簡介10蛋型厭氧消化槽都市生活污水處理廠簡介11八里污水處理廠蛋型厭氧污泥消化槽(9,000m3)都市生活污水處理廠簡介12都市生活污水處理廠簡介八里污水處理廠蛋型厭氧污泥消化槽頂部1314問答討論Question&Answer15人類文化結合Company夥伴Relation關係Community社區Correlation關聯Communication溝通Cooperation合作Consociety族群融合Conclusion結論16DihuaSewageTreatmentPlant,TaipeiCity,TAIWANStudent:CamiloSarriaAguilera(UASM),Yu-MinTien(NCKU)Assistant:Keng-HaoYang,Yu-HsuanWangProfessor:Dr.Sheng-ShungCheng(NCKU)DepartmentofEnvironmentalEngineering,NationalChengKungUniversity,Tainan,TAIWAN2009.09.30Germany-TaiwanCooperativeResearchReport.17Introduction•Originally,theDihuaSewageTreatmentPlant,whichopenedinJuly1980,wasaprimarytreatmentplantthathadanaveragetreatmentcapacityof274,000m3/day.IttreatedsewagefromTaipeiCityhouseholdconnectionsandinterceptionstations.InordertocomplywiththenewEPAEffluentStandards,whichtookeffectonJanuary1,1998,theTreatmentPlantwasclosedonApril7,1998,andtheupgradingprojectbegan.18RenewProjectSchedule•TheDihuaSewageTreatmentPlantUpgradingProjectincludescivilandarchitecturalengineeringwork,treatmentsystemengineeringworkandlandscapeengineeringwork.ThecivilengineeringandlandscapingworkwerecompletedonMay4andJune292004respectively,withtheentireprojectscheduledforcompletionattheendof2006.19TypeofTreatment•Sewageistreatedusingadeep-tankmulti-stageaerationlevel2biologicaltreatmentmethodbeforebeingdisinfectedanddischargedintotheDanshuiRiver.Sludgeisthickened,digestedanddehydratedbeforerecyclingandreuse.20DesignCapacityandWaterQuality•Designtreatmentcapacity:Average500,000m3/day.2millionspopulationequivalent(P.E.)•DesignWaterQuality:Influent:BOD5=180mg/L,SS=180mg/L.Effluent:BOD5≤20mg/L,SS≤20mg/L.•RecycledWater:10,000m3/day.21ProcessDescription(1)•AvolumeofeffluentfromtheDihuaSewagePumpingStationisdivertedtotheDihuaSewageTreatmentPlant.Thenthesewagepassesthroughfinebarscreenstoremovecoarsematerials.Itthenflowsintoprimaryclarifierstoremovethegreaterpartofthesuspendedsolidsandasmallportionoftheorganicmatterremainedinthesewage.•Theeffluentfromtheclarifierflowsintoaerationbasinsandthensecondaryclarifierstoremoveorganicmatterinthesewagestream.22ProcessDescription(2)•TheeffluentfromthesecondaryclarifiersisdisinfectedwithsodiumhypochloritetoremovepathogensbeforedischargedintotheDanshuiRiver.Aftersandfiltration,10,000cubicmeterperdayofeffluentarerecycledforreusewithintheplant.•Nightsoilisthickenedforprocessingwithprimarysludgeandsecondarysludge,thenanaerobicallydigestedanddehydratedtobecomesludgecake;itisthenrecoveredforavarietyofreusessuchas:incineration,brickmaking,compost,cementmixandsoilimprovements.23ProcessDescription(3)•Partofthebiogasproducedbyanaerobicdigesterisusedfordigestermixingandtheboilerformaintainingthefeeding&digestertemperature.ExcessbiogasisprovidedtotheDihuaHeatedSwimmingPoolforusewithheating.24EngineeringCharacteristics(1)•ThemajorprocessingunitinthisPlantisanundergroundstructure210minlength,250mwideand17mindepth.Itrequiresdeepisland-methodexcavationwithinalargearea,andconstructionworkisthusverydifficult.•Theplantusesadouble-layerdesignforboththeprimaryandsecondaryclarifiers,andisthefirsttobeimplementedinTaiwan.Itallowsahighertreatmentcapacityintheexistinglandarea.Thebiologicaltreatmentsystemthatusesdeep-tankmulti-stageaerationisalsothefirstusedinTaiwan.Inadditiontothefunctionofgeneralbiologicaltreatment,thissystemfurtherprovidespartialdenitrification.25EngineeringCharacteristics(2)•Thepreliminarytreatmentfacilities,primaryclarifiers,aerationtanks,secondaryclarifiers,disinfectionchambersandeffluentpumpingstationarealldesignedassemi-undergroundenclosedstructures,allofwhichareprovidedwithdeodorizingsystemsandnoisecontrolfacilities.Therewillbeminimalenvironmentalimpactwhentheplantstartsrunningafterthecompletionofconstructionwork.•Theplanthasbeenequippedwithtertiarytreatmentreusefacilities;recirculatingbackwashingfiltertrough,theeffluentcanbeusedasutilitywaterforthetreatmentplant,waterforirrigatingthegardenandgeneralgardeningwaterforpublicuse.26EngineeringCharacteristics(3)•Aftercompletionofthiswork,therewillbeapproximately4.6hectaresofspaceabovethemajortreatmentunits;thisspacewillbedesignedintoarecreationparkwitharangeoffacilities,includingachildren’splayground,roller-skatingrink,activitylawns,basketballcourts,tenniscourts,softballfieldsandaparkinglot.Moreover,heatedswimmingpoolislocatedinthenortheastcorneroftheplant.Thewholeleisureareawillbeopentothepublic.FigureThePlant,withacapacityof500,000cubicmetersperday,willbethelargestsecondarytreatmentplantinTaiwan.27PracticalEffects•CompliancewithENVIRONMENTALLAWSandREGULATIONS.•Toreducetheriskofthelargesystem.•ThePlantwithacapacityof500,000cubicmetersperdayhasdoubledcapacityoftheoriginal.•Constructionofanattachedsportsandrecreationparktopro