1T05T生活污水处理方案中英文Word文件下载.docx
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ThesefivesewagetreatmentequipmentwillbeusedforXBYproject.
该沙耶武里水电站工程位于老挝琅勃拉邦的湄公河下游的70千米位置处。
TheXayabouryhydropowerprojectislocatedLowerMekongRiver70KMintownof
luangprabangofLaos.
气候条件Theweatherconditions:
最高周围空气温度Maximumambientairtemperature40℃
平均周围空气温度Average
ambientairtemperature30℃
最低周围空气温度5℃Minimumambientairtemperature
工程地点海拔高度大约为240m.a.s.l.
Thealtitudeofprojectsiteisabout240m.a.s.l.
污染程度Degreeofcontamination(IEC60071)中度moderate
湿度(平均值)Humidity(average)95%
2、设计处理原则
Theprincipleofdesigntreatment
1、选用先进、合理、可靠的处理工艺,在确保处理排放达标的前提下,做到操作简单、管理方便、占地小、投资省、运行费用低;
Selecttheadvanced,reasonableandreliabletreatment
process,onthepremiseofensuretheemissionstandard,achievethesimpleoperation,convenientmanagement,smalloccupationofland,lowinvestmentandlowoperationcost.
2、本工程系环境工程,尤其要注意环境保护,避免和减少二次污染。
要求改善劳动卫生条件,贯彻安全生产和清洁文明生产的方针;
Thisprojectistheenvironmentalengineering,itshallpayparticularattentiontoenvironmentalprotection,avoidandreducethesecondarypollution.Itneedstoimprovehygienicworkingconditions,
carryoutthepolicyofsafe,cleanandcivilizedproduction.
3、为了提高污水处理站管理水平,设计采用的自动化程度较高,操作人员的劳动强度低;
Inordertoimprovethemanagementlevelofsewagetreatmentstation,thedesignadoptshighdegree
of
automationandlowlaborintensityofoperators.
4、合理选用优质配件,降低能耗,提高工作效益和使用寿命,降低成本;
Choosethe
high-qualitypartsreasonably,reduceenergyconsumption,improvetheworkefficiencyandservicelife,lowerthecost.
5、在工艺设计时,有较大的灵活性,可调性,以适应水量、水质的周期变化;
Duringtheprocess
design,thereisgreatflexibilityandadjustabilitytoadapttheperiodicvariationofwatervolumeandwaterquality.
6、系统具有调峰、脱氮、消毒、清水储蓄等功能;
Thesystemhasthefunctionofpeakregulation,nitrogenremoval,disinfectionandstorageofclearwater.
7、采用污泥自消化工艺,以降低污泥产生量;
Itadoptsself-digestionprocessforthesludgetoreduceitsquantitygenerated.
3、工程范围
Thescopeofproject
1)从污水处理格栅井开始到处理设备的排放口1米处为止。
Fromsewagegrillewellto1meterwhichisawayfromdischarge
outletofprocessequipment.
2)污水工程的工艺流程,工艺设备选型,工艺设备的结构布置。
Thetechnologicalprocessofsewageproject,theselectionandstructuralarrangementofprocessingequipment.
3)污水处理设备的电气控制设计、供货及调试工作。
Theelectriccontroldesign,supplyofmaterialanddebuggingworkofsewagetreatmentequipment.
4)污水处理设备的制作、安装、调试等工作。
Theworksuchasproduction,installation,debugging.,etcofsewagetreatmentequipment.
5)污水工程的动力配线,由需方将主电引至污水工程的配电控制箱。
Thepowerwiringofsewage
work,itwillbedemandsidewholeadsthemainpowertodistributioncontrolboxofsewageproject.
6)不包括废水的收集管网及清水排出界区的外排水管网等。
Itdoesn’tincludethecollectionpipenetworkofsewageanddrainagepipenetworkofclearwater.
4、污水来源、水量及排放标准
Thesourceofsewage,volumeofsewageandemissionstandard
1、污水来源Thesourceofsewage
发电站污水处理设备----------------10立方米/天
Thesewage
treatment
equipmentofpowerstation------------10Cubicmeters/day
泵站污水处理设备-------------------1.0立方米/天
equipmentofpumpstation-------------1.0Cubicmeter/day
NL污水处理设备-------------------3立方米/天
NLsewage
equipment------------3Cubicmeters/day
最大短时流量:
Themaximumshort-timeflow
发电站污水处理设备----------------30立方米/小时
equipmentofpowerstation-----------30Cubicmeters/hour
泵站污水处理设备-------------------1.4立方米/小时
equipmentofpumpstation----------1.4Cubicmeters/hour
NL污水处理设备--------------------0.42立方米/小时
NLsewage
equipment----------0.42Cubicmeter/hour
2、污水水量Thevolumeofsewage
根据提供资料,本公司拟设计制造1套处理水量为1t/h,处理发电站污水处理设备,设计制造4套0.5t/h的污水处理设备,处理泵站污水处理设备和NL污水处理设备。
设计说明:
根据污水来源,发电站污水处理设备处理量为10t/d,考虑处理量的平衡和富裕量,设计处理能力为1t/h。
泵站污水处理设备处理量为1t/d,考虑处理量的平衡和富裕量,设计处理能力为0.5t/d。
Accordingtotheinformation,thecompanyistodesignandmanufactureonesetofsewagetreatmentequipmentforpowerstationwith1t/htreatmentcapacity,designandmanufacturefoursetsofsewagetreatmentequipmentwith0.5t/htreatmentcapacity,sewagetreatmentequipmentforpump
stationaswellasNLsewagetreatmentequipment.
Descriptionofdesign:
accordingtothesourcesofsewage,thehandlingcapacityforsewagetreatmentequipmentofpowerstationis10t/d,consideringthebalanceandmarginofhandlingcapacity,thedesignprocessingcapacityis1t/h.Thehandlingcapacityforsewagetreatmentequipmentofpumpstationis1t/d,consideringthebalanceandmarginofhandlingcapacity,thedesignprocessingcapacityis0.5t/h.
3、设计排放标准Theemissionstandardofdesign
污水水质Thesewagequality
描述Description
单位Unit
加载,流入
Loading,flowinto
符合环境标准的污水
Thesewagewhich
meetsenvironmentalstandard
BOD1)
毫克/升mg/L
380
30
TSS2)
毫克/升mg/L
200
设计出水水质符合GB18918中的一级A标准要求。
Thedesignofeffluentqualitycomplieswiththerequirementoffirstlevelandstandard
AinGB18918.
5、污水处理设计工艺
Thedesigntechnologyofsewagetreatment
1、工艺流程Thetechnologicalprocess
污水处理工艺流程Thetechnologicalprocessofsewagetreatment
合格排放
泵
格栅井:
screenwell调节池:
regulatingreservoirA级生物池:
GradeAbiologicalpool
O级生物池:
GradeObiologicalpool沉淀池:
sedimentationbasin消毒池:
disinfectingtank排放池:
drainpit合格排放:
qualifiedemission回流:
backflow
调节池旁路:
bypassofregulatingreservoir上清液回流:
backflowofliquidsupernatant
污泥消化池:
digestioncellofsludge剩余污泥定期抽吸外运:
drawing-inandoutwardtransportofatfixedperiodforexcesssludge
2、工艺说明Thedescriptionofprocess
生活污水经格栅拦污后的污水直接进入调节池,设置调节池的目的调节污水的水量和水质,为防止悬浮物在调节池内沉淀,在调节池底布有穿孔曝气管,采用间隙曝气。
Thedomesticsewagewhichisinterceptedbygratingflowsinregulatingreservoir,thefunctionofregulatingreservoiristoadjustthewaterqualityandvolumeofsewagetostopthesedimentationofsuspendingmaterialinregulatingreservoir,thereisperforatedpipespargeratthebottomofregulatingreservoirandintermittentaerationisused.
本工程污水中有机成份较高,可生化性较好,因此采用生物处理方法大幅度降低污水中有机物含量是最经济的。
由于污水中氨氮及有机物含量较高,特别是有机氮,在生物降解有机物时,有机氮会以氨氮形式表现出来,氨氮也是一个重要的污染控制指标,因此污水处理采用缺氧好氧A/O生物接触氧化工艺,即生化池需分为A级池和O级池两部分。
调节池内污水采用污水提升泵提升至A级生化池,进行生化处理。
在A级池内,由于污水中有机物浓度较高,微生物处于缺氧状态,此时微生物为兼性微生物,它们将污水中有机氮转化为氨氮,同时利用有机碳源作为电子供体,将NO2-N、NO3-N转化为N2,而且还利用部分有机碳源和氨氮合成新的细胞物质。
所以A级池不仅具有一定的有机物去除功能,减轻后续O级生化池的有机负荷,以利于硝化作用进行,而且依靠污水中的高浓度有机物,完成反硝化作用,最终消除氮的富营养化污染。
经过A级池的生化作用,污水中仍有一定量的有机物和较高的氮氨存在,为使有机物进一步氧化分解,同时在碳化作用趋于完全的情况下,硝化作用能顺利进行,特设置O级生化池。
Theorganiccomponentsofthesewageforthisprojectisrichandbiodegradabilityisgood,soitisthemosteconomicalwhenusingbiologicaltreatingtechnologytoreducetheorganiccomponentsinthesewage.Becausethepercentageofammonianitrogenandorganiccomponentsarehigh,especiallyfororganicnitrogen,itwillemergeintheformofammonianitrogenduringthedegradationoforganiccompounds.Theammonianitrogenisanimportantcontrolindexforpollution,sothesewagetreatmentusesaerobic-anoxicA/Obiologicalcontactoxidationtechnology,thatis,biochemicalpoolneedstobedividedinAlevelpoolandOlevelpool.ThesewageinregulatingreservoirwillbeliftedtoGradeAbiochemicalpoolwithsewageliftpumpforbiochemicaltreatment.IngradeApool,duetohighconcentrationoforganicmatterinthesewage,microorganismlackstheoxygen,atthismoment,itisaerobic-anaerobicmicrobeandtheyconverttheorganicmatterintoammonianitrogen.Atthesametime,itusestheorganic
carbon
sourceaselectrondonor,changeNO2-N、NO3-NintoN2.Furthermore,itusespartoforganic
sourceandammonianitrogentocompoundthenewcellularmaterial.SogradeApoolnotonlyhastheremovalfunctionoforganicmatterandreducetheorganicloadingofGradeObiochemical
pool,itisgoodfortheproceedingofnitrification,replyonthehighlyconcentratedorganicmatterinthesewageandfinishthedenitrification,eliminatetheeutrophicationpollutionofnitrogen.AfterthebiochemicalactionofGradeApool,thereisstillcertainamountoforganicmatterandhighpercentageofnitrogenammonia,forthefurtheroxygenolysisandsmoothrunningofnitrification,whencarbonificationisalmostcompleted,settheGradeObiochemicalpool.
A级池出水自流进入O级池,O级生化池的处理依靠自养型细菌(硝化菌)完成,它们利用有机物分解产生的无机碳源或空气中的二氧化碳作为营养源,将污水中的氨氮转化为NO2-N、NO3-N。
O级池出水一部分进入沉淀池进行沉淀,另一部分回流至A级池进行内循环,以达到反硝化的目的。
在A级和O级生化池中均安装有填料,整个生化处理过程依赖于附着在填料上的多种微生物来完成的。
在A级池内溶解氧控制在0.5mg/l左右;
在O级生化池内溶解氧控制在3mg/l以上,气水比15:
1。
TheeffluentofGradeApoolwaterflowsintoGradeOpoolbyitself,theprocessingofGradeObiochemicalpooldependsonautotrophicbacteriatocomplete,theytakeadvantageofdecompositionoforganicmattertogenerateinorganiccarbonsourceorcarbondioxideintheairasnutritionsource,ammonianitrogeninwastewatercanbeconvertedtoNO2-N、NO3-N.ThepartofeffluentfromGradeOpoolflowsintosettlingbasinforprecipitation,anotherpartreturnstoGradeApoolforinnerlooptoachievethegoalofdenitrification.TheyareinstalledwithfillerinGradeAandGradeObiochemicalpool,thewholeprocessofbiochemicaltreatmentdependsonavarietyofmicroorganismswhichareattachedtothefiller.ThedissolvedoxygeninGradeApoolwillbecontrolledatabout0.5mg/l.ThedissolvedoxygeninGradeOpoolwillbecontrolledabove3mg/l,therateofgasandwateris15:
1.
O级生化池一部分出水回流进入A级池;
一部分流入斜管沉淀池进行固液分离。
OnepartofeffluentfromGradeObiochemicalpoolwillflowbackintoGradeApool;
anotherpartwillflowintoinclinedtubesettlingbasinforsolid-liquidseparation.
沉淀池固液分离后的出水进入消毒排放池,经过固体氯片消毒,杀灭出水中可能含有的活性微生物,以确保出水水质达标排放。
Thewaterafterthesolid-liquidseparationinsedimentationbasinwillflowintodisinfecting