环境工程施工外文文献及翻译水处理 21页

-.氧化沟工艺在污水处理中的应用和开展摘要：本文主要阐叙了Carrousel氧化沟的构造、工艺机理、运行过程中存在的问题和相应的解决方法。最后，介绍了Carrousel氧化沟的最新的研究进展并指出了未来的主要研究方向。关键词：Carrousel氧化沟除磷脱氮构造机理1、前言氧化沟又名连续环曝气池，是活性污泥法的一种变形。氧化沟处理工艺在20世纪50年代由荷兰卫生工程研究所研制成功的。自从1954年在荷兰的首次投入使用以来。由于其出水水质好、运行稳定、管理方便等技术特点，已经在国外广泛的应用于生活污水和工业污水的治理。目前应用较为广泛的氧化沟类型包括：帕斯维尔氧化沟、卡鲁塞尔氧化沟，奥尔博氧化沟、T型氧化沟、DE型氧化沟和一体化氧化沟。这些氧化沟由于在构造和运行上存在差异，因此各具特点。本文将主要介绍Carrousel氧化沟的的构造、机理、存在的问题及其最新开展。2、Carrousel氧化沟的构造Carrousel氧化沟是1967年由荷兰的DHV公司开发研制。在原Carrouse氧化沟的根底上DHV公司和其在美国的专利特许公司EIMCO又创造了Carrousel2000系统，实现了更高要求的生物脱氮和除磷功能。至今世界上已有850多座Carrousel氧化沟和Carrousel2000系统正在运行。-.可修编.\n-.Carrousel氧化沟使用定向控制的曝气和搅动装置，向混合液传递水平速度，从而使被搅动的混合液在氧化沟闭合渠道循环流动。因此氧化沟具有特殊的水力学流态，既有完全混合式反响器的特点，又有推流式反响器的特点，沟存在明显的溶解氧浓度梯度。氧化沟断面为矩形或梯形，平面形状多为椭圆形，沟水深一般为2.5~4.5m，宽深比为2:1，亦有水深达7m的，沟水流平均流速为0.3m/s。氧化沟的曝气混合设备有外表、曝气转刷或转盘，射流曝气池、导管式曝气器和提升管曝气机等，近年来配合使用的还有水下推动器。1、Carrousel氧化沟的机理3.1Carrousel氧化沟处理污水的机理最初的普通Carrousel氧化沟的工艺中污水直接与回流污泥一起进入氧化沟系统。外表曝气机使混合液中溶解氧DO的浓度增加到大2~3mg/L。在这种充分掺氧的条件下，微生物得到足够的溶解氧来去除BOD；同时，氮也被氧化成硝酸盐和亚硝酸盐，此时，混合液处于有氧状态，在曝气机下游，水流由曝气去的湍流状态变成之后的平流状态，水流维持在最小流速，保证活性污泥处于悬浮状态〔平均流速大于0.3m/s〕。微生物的氧化过程消耗了水中溶解氧，直到DO值降为0，混合液呈缺氧状态。经过缺氧区的反硝化作用，混合液进入有氧区，完成一次循环。该系统中，BOD降解是一个连续过程，硝化作用和反硝化作用发生在同一池中。由于构造的限制，这种氧化沟虽然可以有效去除BOD，但除磷脱氮的能力有限。3.2Carrousel氧化沟除磷脱氮的影响因素-.可修编.\n-.影响Carrousel氧化沟除磷夫人因素主要是污泥龄、硝酸盐浓度及基质浓度。研究说明，当污泥龄为8~10d时活性污泥中最大磷含量为其干污泥量的4%，为异养菌质量的11%，但当污泥龄超过15d时污泥中最大含磷量明显下降，反而达不到最大除磷效果。因此，一味延长污泥龄是没有必要的，宜在8~15天围选用。同时，高硝酸盐浓度和低基质浓度不利于除磷过程。1、Carrousel氧化沟存在的问题及解决方法尽管Carrousel氧化沟具有出水水质好、抗冲击负荷能力强、除磷脱氮效率高、污泥易稳定、能耗省、便于自动化控制等优点。但是，在实际的运行过程中，仍存在一系列问题。4.1污泥膨胀问题当废水中的碳水化合物较多，N、P含量不平衡，PH值偏低，氧化沟中污泥负荷过高，溶解氧浓度缺乏，排泥不畅等易引起丝状菌性污泥膨胀，非丝状菌性污泥膨胀主要发生在废水水温较低而污泥负荷较高时。微生物的负荷高，细菌吸取了大量的营养物质，由于水温低，代谢速度较慢，积贮起大量高粘性的多糖类物质，使活性污泥的外表附着水大大增加，SVI值很高，形成污泥膨胀。-.可修编.\n-.针对污泥膨胀的起因，可以采取不同的对策：由缺氧、水温高造成的，可加大曝气量或降低进水量以减轻负荷，或适当降低MLSS〔控制污泥回流量〕，使需氧量减少；如污泥负荷过高，可以提高MLSS，以调整负荷，必要时可停顿进水，闷曝一段时间；可通过投加氮肥、磷肥，调整混合液中的营养物质平衡〔BOD5：N:P=100:5:1〕；PH值过低，可投加石灰调节；漂白粉和液氯，能抑制丝状菌繁殖，控制结合水性污泥膨胀。4.2泡沫问题由于进水中带有大量油脂，处理系统不能完全有效地将其除去，局部油脂富集于污泥中，经转刷充氧搅拌，产生大量泡沫；泥龄偏长，污泥老化，也易产生泡沫。用外表喷淋水或除沫剂去除泡沫，常用除沫剂有机油、煤油、硅油，投加量为0.5~1.5mg/L。通过增加曝气池污泥浓度或适当减少曝气量，也能有效控制泡沫产生。当废水中含外表活性物质较多时，易预先用泡沫别离或其他方法去除。另外也可考虑增设一套除油装置。但最重要的是要加强水源管理，减少含油过高废水及其有毒废水的进入。4.3污泥上浮问题当废水中含油量过大，整个系统泥质变轻，在操作过程中不能很好控制其在二沉池的停留时间，易造成缺氧，产生污泥上浮；当曝气时间过长，在池中发生高度消化作用，使硝酸盐浓度过高，在二沉池易发生反硝化作用，产生氮气，使污泥上浮；另外，废水中含油量过大，污泥可能挟油上浮。发生污泥上浮后应暂停停水，打碎或去除污泥，判明原因，调整操作。污泥沉降性差，可投加混凝剂或惰性物质，改善沉淀性；如进水负荷大应减少进水量；如污泥颗粒细小可降低曝气机转速；如发现反硝化，应减小曝气量，增大回流或排泥量；如发现污泥腐化，应加大曝气量，去除积泥，并设法改善水力条件。4.4流速不均及污泥沉积问题-.可修编.\n-.在Carrousel氧化沟中，为了获得其他独特的混合和处理效果，混合液必须以一定的流速在沟循环流动。一般认为，最低流速应为0.15m/s，不发生沉积的平均流速应到达0.3~0.5m/s。氧化沟的曝气设备一般为曝气转刷和曝气转盘，转刷的浸没深度为250~300mm，转盘的浸没深度为480~530mm,与氧化沟水深〔3.0~3.6m)相比，转刷只占了水深的1/10~1/12,转盘也只占了1/6~1/7,因此造成氧化沟上部流速较大〔约为0.8m~1.2m,甚至更大〕，而底部流速很小，致使沟底大量积泥〔有时积泥厚度达1m),大大减少了氧化沟的有效容积，降低了处理效果，影响出水水质。加装上、下游导流板是改善流速分布、提高充氧能力的有效方法和最方便的措施。上流导流板在距转盘轴心4.0处，导流板高度为水深的1/5~1/6，并垂直于水面安装：下游导流板安装在距转盘轴心3.0m处。导流板的材料可以用金属或玻璃钢，但以玻璃钢为佳。导流板与其改善措施相比，不仅不会增加动力消耗和运转本钱，而且还能够较大幅度地提高充氧能力和理论动力效率。另外，通过在曝气机上游设置水下推动器也可以对曝气转刷底部低速区德尔混合液循环流动起到积极作用，从而解决氧化沟底部流速低、污泥沉积的问题。设置水下推动器专门用于推动混合液可以使氧化沟的运行方式更加灵活，对于节约资源、提高效率具有十分重要的意义。1、Carrousel氧化沟的开展-.可修编.\n-.由于污水处理标准中对除磷脱氮的要求越来越严格，Carrousel氧化沟也得到了进一步的开展。目前，研究及应用较多的包括以下两种类型：微孔曝气型Carrousel2000系统、Carrousel3000系统。5.1微孔曝气型Carrousel2000系统微孔曝气型Carrousel2000系统采用微孔曝气〔供养设备为鼓风机〕，微孔曝气器可产生大量直径为1mm左右的微小气泡，这大大提高了气泡的外表积，使得在池容积一定的情况下氧转移总量增大。根据目前鼓风机生产厂家的技术能力，池的有效水深最大可达8m，因此可根据不同的工艺要求选择适宜的水深。传统氧化沟的推流是利用转刷、转碟或倒伞形表爆机实现的，其设备利用率低、动力消耗大。微孔曝气型Carrousel2000系统那么采用了水下推流的方式，即把潜水推进器叶轮产生的推动力直接作用于水体，在起推流作用的同时又可有效防止污泥的沉降。因此，采用潜水推进器既降低了动力消耗，又使污水得到了充分地混合。5.2Carrousel3000系统Carrousel3000系统是在Carrousel2000系统前再加上一个生物选择区。该生物选择区是利用高有机负荷筛选菌种，抑制丝状菌的生长，提高各污染物的去除率，其后的工艺原理同Carrousel2000系统。Carrousel-.可修编.\n-.3000系统的较大提高表现在：一是增加了池深，可达7.5~8m，同心圆式，池壁共用，减少了占地面积，降低造价同时提高了耐低温能力；而是曝气设备的巧妙设计，曝气机下装导流筒，抽吸缺氧的混合液，采用水下推进器解决流速问题；三是使用了先进的曝气控制器qute.四是采用一体化设计，从中心开场，包括以下环状连续工艺单元；进水井和用于回流活性污泥的分水器；分别由四局部组成的选择池和厌氧池。这之外是有三个曝气器和一个预反硝化的Carrousel2000系统.五是圆型一体化的设计使得氧化沟不需要额外的管线，即可实现回流污泥在不同工艺单元的分配。1、结论Carrousel氧化沟由于具有良好的除磷脱氮能力、抗击负荷能力和运营管理方便等优点，已经得到了广泛的应用。但由于科技的开展和社会的进步，该工艺必将得到进一步的提高。作者认为：Carrousel氧化沟的未来研究方向主要表达在以下几个方面。1、结合生物膜法，研究和开发生物模型Carrousel氧化沟。这样不仅可以提高单位反响器的微生物总量，从而提高有机负荷，而且生物膜本身具有的置A/O系统强化了脱氮效果。2、不断提高Carrousel氧化沟中微生物的活性。例如在氧化沟中投加EM专一菌种、投加铁盐使微生物驯化成生物铁、投加活性炭增强菌胶团的形成并提高耐毒性冲击等。3、提高Carrousel氧化沟设备性能和检测技术。提高表曝机、水下推进器的性能，减少维修工作量；利用DO、ORP等多目标监控技术及变频技术是今后Carrousel氧化沟科学运行的必由之路。4、提高Carrousel氧化沟的耐寒、耐读性能，减少占地面积和工程造价。膜理论的应用、深池水条件和工艺性能的研究为降低工程造价、提高耐寒耐毒性能等提供了可能的方向。-.可修编.\n-.OxidizetheditchcraftindirtywaterhandleofapplicationanddevelopmentSummary:ThistextexpatiatedprimarilytheCarrouseloxidizestheconstruction,craftmechanismoftheditchandcirculatetheproblemexsitedintheprocesswiththehomologousthemethodofsolution.Finally,introducetheCarrouseloxidizethelatestresearchprogressoftheditchandpointedoutthefutureandmainresearchdirection.Keyphrase:TheCarrouseloxidizestheditchdividedsbythephosphortakesoffthenitrogenconstructionmechanismApplicationandDevelopmentofCarrouselOxidationDitchProcessonWastewaterTreatmentAbstract:Thestructureandthetechniquesofcarrouseloxidationditchprocessonnitrogenandphosphorremovalareintroducedinthispaper.Theproblemsinrunningandtheircorrespondingresolventarealsopointed.Atlast,Theauthorshowedtheuptodateresearchimprovementandthemainlyfutureresearchdire-ction.Keywords:Carrousel;oxidationditch;nitrogenandphosphorremoval;structure;techniques1.ForewordOxidizetheditch(oxidationditch)againacontinuouscirculationspiritpond(Continuousloopreactor),isaliveanddirtymiremethodakindoftotransform.OxidizingthedirtywaterinditchhandlesthecraftberesearchedtomanufacturebythehygieneengineeringgraduateschoolofHollandinthe50'sof20centuriessuccess.Sincein1954atDutchthrowintheusagefortheveryfirsttime.Becauseitsawaterfluidmattergood,circulatethestabilityandmanageconvenienceetc.techniquecharacteristics,alreadyat-.可修编.\n-.domesticandinternationalandextensiveapplicationinlivethedirtywatertoisdirtytomanageaqueouslywiththeindustry[1].Currentapplicationthanoxidizeextensivelytheditchtypeinclude:The(Pasveer)oxidizestheditch,the(Carrousel)oxidizestheditch,(Orbal)oxidizestheditch,thetypeofToxidizestheditch(threeditchtypesoxidizetheditch),thetypeofDEoxidizestheditchtoturntooxidizetheditchwiththeintegralwhole.Theseoxidizetheditchbecauseofthedifferenceofesseinconstructionwithcirculating,thereforeeachcharacteristics[2].Thistextwillintroduceconstruction,mechanism,existentproblemanditslatestdevelopmentsthatCarrouseloxidizeditchesprimarily.2.TheCarrouseloxidizestheconstructionoftheditchTheCarrouseloxidizetheditchtoberesearchedtomanufacturebyDutchDHVpanydevelopmentin1967.OxidizethelastthepanyofDHVinfoundationoftheditchintheoriginalCarrouseltopermitedspeciallythepanyEIMCOtoinventagainwithitspatentintheUnitedStatesCarrousel2000system(seethefigure),realizesthelivingcreatureofthehigherrequesttakesoffthenitrogenwithdividedbythefunctionof.Therehasbeenintheworlduptonowmorethan850CarrouselsoxidizetheditchwiththeCarrousel2000systemarecirculating[3].Fromdiagramtherefore,theCarrouseloxidizestheditchtheusagethespiritofthatdefinitedirectioncontrolwithshakeupthedevice,facetomixwiththeliquiddeliverthelevelspeed,frombutmakedrivetheliquidofadmixturethatshakeupisinoxidizeditchshutmatchoutletcirculateflow.Thereforeoxidizetheditchhavethespecialhydraulicsflowsthe,currentpletemixwiththecharacteristicsofthetypereactor,havethecharacteristicsthatpushtheflowtypereactoragain,theditchinsideexsitsobviously-.可修编.\n-.ofdeliquescenceoxygendensitystepsdegree.Oxidizingtheditchcrosssectionisrectangleortrapezoids,theflatsurfaceshapeismanyforoval,theditchinternalwaterisdeepgeneralfor2.5～4.5ｍ,thebreadthisdeepparefor2:1,alsohavethedeepwateramountto7msof,ditchinsideaveragespeedinwatercurrentis0.3ms/s.Oxidizeditchspiritadmixtureequipmentscontainsurfacespiritmachine,thespiritofturntobrushorturnthedishandshoottoflowthespiritmachine,pipetypespiritmachinewithpromotetakecareoftypespiritmachineetc.,matchwithinrecentyearsusagestillcontainunderwaterpushmachine[4~6].3.TheCarrouseloxidizesthemechanismoftheditch3.1TheCarrouseloxidizestheditchhandlesdirtyandaqueousprincipleTheatthebeginningmonCarrouseloxidizesthedirtywaterininsideincraftoftheditchdirectwithdirtymireinrefluxtogetherenteroxidizetheditchsystem.ThesurfacespiritmachinemakesfuseintheliquidofadmixturethedensityoftheoxygenDOincreasesabout2the3mgs/L.Underthiskindofwellthetermoftheoxygen,themicroorganismgetstheenoughdeliquescenceoxygenesandgotodividedbytheBOD;Atthesametime,theammoniaweretoooxidizednitratewithsecondnitrate,thistime,mixwiththeliquidbeplacedintheoxygenappearance.Inthespiritmachinedownstream,afterwatercurrentbebeebytheswiftflowappearanceofthespiritDistrictofevenflowtheappearance,thewatercurrentmaintainsintheminimumcurrentvelocity,guaranteeingtheliveanddirtymirebeplacedinthefloatstheappearance.(averagecurrentvelocity>0.3ms/s)Oxidizemicrobiallytheprocessconsumedtofusetheoxygeninthewater,untilthevalueofDOdeclinesforzero,mixingwiththeliquidreporttheanoxiaappearance.Versanitricthat-.可修编.\n-.turnthefunctionthroughanoxiaarea,mixwiththeliquidentertohavetheoxygenarea,pletingoncecirculating.Thatsysteminside,theBODdeclinesthesolutionisacontinuousprocess,thenitricturnsthefunctiontoturnwiththeversanitricthefunctiontakeplaceinsamepond.Becauseofstructuralrestrict,thiskindofoxidizetheditchalthoughcanthenvalidwhereaboutsBOD,dividedbythephosphorustakeoffthenitrogenousabilitylimited[7].Forthesakeoftheacquisitionbetterdividedbythephosphorustakeoffthenitrogenousresult,Carrousel2000systemsincreasedaoxygenDistrictbeforemonCarrouseloxidizeditchwiththeuniqueoxygenarea.(callagainthattheversanitricinfrontturnsthearea)ThedirtymireinallrefluxesenterstheanaerobicDistrictwith10-30%dirtywater,canundertheanoxiawith10-30%carbonsourcetermpleteremainingofdirtymireinrefluxinsidenitricacidnitrogentoversanitrictoturn,createsfortheuniqueoxygenpondofhereafteruniqueoxygenterm.Atthesametime,anaerobicDistrictinsideofconcurrentlythesexgermsconvertthedissolubilityBODVFA,thegermacquiretheVFAitsassimilationPHB,theenergysourceneededsolvesinthephosphoricwaterandcausephosphaticreleasing.TheanaerobicDistrictawaterenterstheinnerpartinstallstheuniqueoxygenareathathavethemixer,theso-calleduniqueoxygenisapondinsidetomixwithliquidsincehavenothenumeratoroxygen,alsohavenothepoundoxygen(nitricacidroot),thehereuniqueoxygenenvironmentisnext,70-90%dirtywatercanprovidetheenoughcarbonsource,canmakethegermofreleasedthephosphoruswell.TheuniqueoxygenareaconnectsbehindthemonCarrouseloxidizestheditchsystem,furtherpletingtodoawaywiththeBODandtakeoffthenitrogenwithdividedbythephosphorus.Finally,mixwiththeliquidtransferthedirtymire-.可修编.\n-.insideinoxidizeditchenrichoxygenareaeject,whileenrichingtheoxygenenvironmentgermsurfeit,phosphorusfromthewater,ejectingthesystemwiththedirtymireinsurplus.Likethis,inCarrousel2000systems,thanpletedtodoawaywiththeBOD,CODwithtakeoffatthesametimegoodlythenitrogendividedbythephosphorus.SynthesizinganddirtywaterintheriverCity,longsandCitydecontaminationcenter[softhedirtythefactoryofwaterinthefirstinKunmingofadoptionthatcraftshandlesthemovementresultofthefactorytherefore:ThroughCarrousel2000systemafterhandling,theBOD,COD,SSdoesawaywiththeratetoalletoa90%above,theTNdoesawaywiththerateestoa80%,theTPdoesawaywiththeratetoalsoetoa90%.3.2TheCarrouseloxidizestheditchdividedsbythephosphorustakesoffthenitrogenousinfluencefactor.AffectingtheCarrouseloxidizestheditchdividedsbythephosphoricfactorisdirtymire,nitratedensityandqualitydensitiesprimarily.Theresearchexpresses,beingtotalanddirtymireas11%thatahourbiggestphosphorus4%withdealisitsfuckdirtymiredealwithinliveanddirtymire,keepforthethegermphysicalendowmentmeasures,butwhendirtymireover15dhourdirtymiretheinsideisbiggesttocontaintheobviousdescentindealinphosphorus,canningnotreachthebiggestdividedingbytheresultofphosphorusonthecontrary.Therefore,prolongpersistentlythedirtymire(forexample20ds,25ds,30ds)istohavenonecessary,properchoosetousewithinthescopeof8~15d.Atthesametime,highnitratedensitywithlowqualitydensitydisadvantageindividedbytheprocessofphosphorus.AffectingtheCarrouseloxidizestheditchtakesoffthenitrogenousandmainfactorisDO,nitratedensityandcarbonsource-.可修编.\n-.densities.Theresearchexpresses,oxidizingtheditchinsideexsitsdeliquescenceoxygendensitystepsdegreenamelythegoodoxygenareaDOattains3~3.5mgs/L,theanoxiaareaDOattains0~0.5mgs/Lisapriorconditiontotakeplacenitricturnreactionandversanitricsturnthereaction.Atthesametime,amplecarbonsourceandhigherC/theNratiobenefitstotakeofftopletenitrogenously[7].4.TheCarrouseloxidizesproblemandsolutionmethodsoftheditchesse.ThoughtheCarrouseloxidizestheditchhasawaterfluidmattergood,theanti-poundsattheburthenabilitystrong,dividedbythephosphorustakeoffthenitrogenefficiency.But,inphysicallyofmovementprocess,stillexsitsaseriesofproblem.4.1DirtymireinflationproblemWhendiscardtheaquaticcarbohydratemore,theN,Pcontainstheunbalanceofdeal,thepHvalueislow,oxidizingthedirtymireininsideinditchcarrieshigh,fusetheoxygendensitytheshortage,lineupthemirenotetc.causeseasilydirtymireingerminforminsilkinflation;Notthedirtymireingerminforminsilkinflationtakesplaceprimarilyatthewastewaterwatertemperatureislowerbutthedirtymirecarrieshigherhour.Themicrobialburthenishigh,thegermsabsorbedthelargequantitynourishmentmaterial,islowbecauseofthetemperature,metabolismthespeedisslower,accumulatingtheriseslargequantityishightogluesexualandmanysugarmaterials,makingthesurfaceoftheliveanddirtymireadheretothewatertoincreaseconsumedly,SVIthevalueisveryhigh,beingthedirtymireinflation.Causethataimatthedirtymireinflation,canadoptthedifferentcounterplan:Fromtheanoxia,watertemperaturehighresultinof,canenlargementtoleranceorlowerintothewatermeasuresto-.可修编.\n-.alleviateburthen,ortheadequacylowerstheMLSS(controldirtymirerefluxmeasure),makingneedtheoxygenmeasuresdecrease;Ifthedirtymirecarrieshigh,canincreaseMLSS,toadjusttheburthen,necessitythehourcanstopintothewater,stuffyaperiodoftime;Canpassthehurladdthenitrogenfertilizer,phosphorusfatty,adjusttheadmixturenourishmentintheliquidmaterialequilibrium(BOD5:N:P=100:5:1);ThevalueofpHoverlow,canthrowtoaddthelimeregulate;Bleachthepowderwiththeliquidchlorin(presstofuck0.3%ofthedirtymire~0.6%thehurladds),canrepressthesilkformgermbreed,controlingthedirtymireinbinativewaterinflation[11].4.2FoamproblemBecauseenteringtotakethegreaseoflargequantityinthewater,handlingsystemcan'tpletelyandavailablyitsobviation,partsofgreasesenrichestogatherininthedirtymire,throughturntobrushtheoxygenagitation,creationlargequantityfoam;Themireispartialtolong,thedirtymireisaging,andalsoeasycreationfoam.Spraytopourthewaterordividedbywiththesurfacetheofdoawaywiththefoam,inmonusedividedbytheanorganismoil,kerosene,theoilofsilicon,throwdealas0.5~1.5mgs/L.Passtoincreasedirtymireinpondinspiritindensityoradequaciesletupthetoleranceof,alsocancontrolthefoamcreationeffectively.Whencontainthelivematerialinsurfaceinthewastewatermore,separatewiththefoameasilyandinadvancemethodorothermethodsdoawaywith.Alsocanconsidertoincreasetoestablishasetofdividedingbytheoildevicemoreover.Butenhancemostimportantlytheheadwatersmanage,reducingtocontaintheoiloverthehighwastewaterandotherpoisonouswastewaterofinto[12].4.3Floattheproblemonthedirtymire-.可修编.\n-.Whencontaininthewastewatertheoilmeasuresbig,wholesystemmirequalitybeelight,can'tliketocontrolverymuchinoperateprocessitsattwosinkthepondstopovertime,resultingintheanoxiaeasily,producingthecorruptanddirtymireascendtofloat;Whenspirittimeoverlong,takeplaceinpondthehighdegreenitricturnthefunction,makingnitratedensityhigh,attwosinktheversanitricineasyoccurrenceinpondturnthefunction,creationnitrogenspirit,makedirtymireascendfloat;Moreover,containtheoilinthewastewater?Takeplacethedirtymireascendafterfloatingshouldpauseenterwater,brokeoffordirtymireinclearance,judgetheclearreason,adjusttheoperation.Thedirtymiresinkstodeclinethesexbad,canthrowtoaddofoagulateorslothmaterials,theimprovementprecipitatesthesex;Suchasenterthewatercarriesbigletupintothewatermeasuresortheenlargementrefluxmeasures;Suchasthedirtymiregrainsmalllowerthespiritmachineturnsoon;Ifdiscoversversanitricturning,shouldletupthetolerance,enlargetherefluxorrowthemiremeasures;Ifdiscoverthedirtymireiscorrupt,shouldenlargementtolerance,theclearanceaccumulatesthemire,andtrytheameliorativepondinternalwaterdintterm[12].4.4CurrentvelocityisnotallandthedirtymiresinkstoaccumulatetheproblemInCarrouseloxidizeditch,foracquiringitsspecialadmixturewithhandlesresult,mixwithliquidmustwithcertaincurrentvelocityisinditchcirculateflow.Thinkgenerally,thelowestcurrentvelocityshouldshouldattainforanaveragecurrentvelocityfor,doingnottakeplacesinkingaccumulating0.3~0.5ms/s.Thespiritequipmentsthatoxidizetheditchisgeneraltoturntobrushforthespiritoftoturnthedishwiththespiritof,turningto-.可修编.\n-.brushofimmersetohavenodepthfor250~300mms,turnthedishimmersetohavenodepthfor480~530mms.Withoxidizetheditchwaterthedeep(3.0~3.6ms)paring,turntobrushoccupiedthedeep1/10~inwater1/12,turnedthedishtoalsooccupythe1/6~only1/7,thereforeresultintooxidizetheditchupperpartcurrentvelocitybigger(roughly0.8~1.2ms,evenlarger),butthebottomcurrentvelocityisverysmall(especiallyatthewaterisdeep2/3or3/4below,mixwiththeliquidhasnocurrentvelocityalmost),causingditchbottomlargequantityaccumulatethemire(sometimesaccumulatethemirethicknessamounttoa1.0ms),thevalidcapacitythatreducedtooxidizetheditchconsumedly,loweredtohandleresult,affectedawaterfluidmatter.Addingthetop,downstreamleadstoflowtheplankisavalidmethodthatameliorativecurrentvelocitydistribute,increasestheoxygenabilitywiththemostconvenientmeasure.Theupperstreamleadstoflowtheplankinstallsatbeapartfromtoturnthe4.0places(upperstream)：dish(turntobrush)axis,leadtoflowplankhighdegreeasthedeep1/5~inwater1/6,binetheperpendicularityinstallinthesurface;Thedownstreamleadstoflowtheplankinstallsatbeapartfromtoturndish(turntobrush)axis3.0ms.Leadingtoflowknotholematerialcanusemetalsorglasssteels,butregardglasssteelasgood.Leadtoflowtheplankpareswithotherameliorativemeasure,can'tnotonlyincreasethemotiveconsumeswithrevolvescost,butalsocanstillthansignificantlyexaltation充oxygenabilitywiththeoriesmotiveefficiency[13].Moreover,passinthespiritonboardswimtoestablishtheunderwaterpushmachinecanalsoturntothespiritoftheliquidofadmixturethatbrushthebottomlowspeedareacirculatestoflowtorisepositivepushfunction,frombutthesolutionoxidizesthe-.可修编.\n-.problemthatlowanddirtymireincurrentvelocityinbottominditchsinkaccumulates.Establishtheunderwaterpushmachineusedsforexclusivelythepushmixswiththeliquidcanmakemovementmethodthatoxidizetheditchmuchmorevivid,thisforeconomyenergy,liftthehigh-efficiencyhavingtheveryimportantmeaning[14].5.TheCarrouseloxidizesthedevelopmentoftheditchBecausethedirtywaterhandlesstandardinsidetodividedbythephosphorustakeoffthenitrogenousrequestmoreandmorestrict,thedevelopmentthatCarrouselfurtheroxidizedtheditchtoalsoget.Current,theresearchandapplicationincludesmorelybelowtwocategorytype:TinyborespirittypeCarrousel2000systems,Carrousel3000system.5.1TinyborespirittypeCarrousel2000systemTinyborespirittypeCarrousel2000tinyboreinadoptioninsystemspirit(provideoxygenequipmentsasthedrumbreezemachine),thetinyborespiritmachinecanproducethediameteroflargequantityasasurfacefororsoandsmallspiritsteeping,thisconsumedlyincreasesspiritbubbleaccumulates,underingthecertaincircumstanceincapacityinpondmaketheoxygentransferthegrossmeasuresaggrandizement.(ifdeepincrementinpond,itsspreadthequalityefficiencywillbehigher)Producethetechniqueabilityofthefactoryhouseaccordingtothecurrentdrumbreezemachine,thevalidwaterofthepondisdeepbiggestamountingtoa8ms,thereforecanselectbyexaminationsaccordingtothedifferentcraftrequestthefitwaterisdeep.Thetraditionoxidizestheditchpushestoflowistomakeuseoftoturntobrush,turnadiscorpourtheumbrellatypeformmachinerealizesof,itsequipmentsutilizationislow,themotiveconsumesbig.TinyborespirittypeCarrousel2000-.可修编.\n-.systemsthenadoptedtheunderwaterpushesthewaythatflow,risestodivethepropellertheleafthemotivationthatroundcreationthedirectfunctionnamelyintheofwater,atpushtoflowthefunctiontocankeepdirtymirefromsinkingtodeclineeffectivelyagainatthesametime.Asaresult,theadoptiondivesthepropellersincelowerthemotiveconsume,makingmirewatergotagaintomixswithadequately.Seeingfromwaterpowercharacteristic,tinyborespirittypeCarrousel2000systemsarewreathsformthefoldflowsthepondtype,concurrentlypushingtheflowtypewithpletemixwiththetypeflows.Inregardtowholeoxidizeditch,canthinkthatoxidizetheditchisapletemixwithspiritpond,itsdensityvarietycoefficientsmallestevencanneglecttodonotaccount,enterthewaterwillgetthedilutionquickly,thereforeithavetheverystronganti-poundsattheburthenability.Buthaveoxidizeditchinsideofacertainverymuchthesomepushingthecharacteristicoftheflowtype,inthenearbydistrictindownstreaminmachineinspiritinDOdensityhigher,butalongwithincreasewithspiritmachinedistancecontinuouslythenthedensityofDOlowerscontinuously.(appeartheanoxiaarea)Thiskindofstructuremethodmakesfriendlyoxygeninareainanoxiaareaexsitedtobuildthethinginside,makinguseofitswaterpowercharacteristicwell,ingtoanefficientlythelivingcreaturetakesoffthenitrogenouspurpose.TinyborespirittypeCarrousel2000systemthoughhavetheoxygenabilitystrong,dividedbythephosphorustakeoffthenitrogeneffective,coverthearealittlewithcanconsumelowetc.advantage,italsoexsitsatthesametimetheproblemthattinyborespiritequipmentsmaintain.Current,theservicelifeofthelocaland-.可修编.\n-.tinyborespiritmachineis5yearsin4~,canamountto10yearsin8~goodly,butwithimportthetinyborespiritmachineparetostillhavethecertainmargin.Thespiritmachinemaintainsunliketheformequipmentsissoconvenient,itneedtofuckthepondtalentfixs,andalsoistosayoncethetinyborespiritmachineappearstheproblemtoneedtheadoptionparalleltwoinconveniencefororthirdsetstosolvingproblem,oradoptingpromotingdevicewaitingtoresolving,thistoowillgivingproductionwithmanagingbringingbiggest[1516].5.2Carrousel3000systemCarrousel3000systemsareintheCarrousel2000systemsareex-toplusalivingcreaturethechoicethearea.Thatlivingcreaturechoiceareaisacrafttomakeuseofhighorganismcarriestosievegermgrow,represssilkformgermincrease,increaseeachpollutantdoawaywiththerate,afterwardprincipletogetherCarrousel2000system.Carrousel3000systemofbiggerincreasestoexpressat:Anistoincreasedtheponddeep,canamountto7.5~8ms,unitedatheartcircletype,thepondwallusestotally,reducingtocoverthearea,loweringtobuildthepricetoincreasestobearthelowtemperatureabilityatthesametime;(canamountto7℃)Twoistheliquidofadmixturethatspiritequipmentsthatskillfuldesign,theformmachinedescendstoinstalltoleadtoflow,theanoxiaoftakeout,adopttheunderwaterpropellersolutioncurrentvelocityproblem;ThreeistousedtheadvancedspiritcontrollerQUTE.(itadoptthemuchaerkindofchangingthedealcontrolmode)Fouristoadopttheintegralwholeturnthedesign,startingfromthecenter,includingbelowwreathformconsecutioncraftunit:Enterthewellofwaterwiththecentwatermachinethatusedfortheliveanddirty-.可修编.\n-.mireinreflux;Differencefromfour-partthechoicepondthatcentconstitutewith厌oxygenpond.ThisoutsideisaCarrouseltohavethreespiritmachinewithaprepareversanitricturnthepond2000system.(suchasfigure2show)Fiveistubelinethatthedesignthatthecircularintegralwholeturntomakeoxidizetheditchdonotneedadditionally,canimmediatelyrealizedirtymireinrefluxallotmentindifferentcraftunit[17].6.ConclusionTheCarrouseloxidizestheditchbecauseofhavingthegoodaphosphorustakesoffthenitrogenability,anti-poundsattheburthenabilitywithcirculatetomanagetheconvenienceetc.theadvantage,havinggottheextensiveapplication.Butbecauseoftechnologicaldevelopmentwithsocialadvance,thatcraftisnecessarilywillexaltationgettingfurther.Theauthorthinks:TheCarrouseloxidizesthefutureresearchdirectionoftheditchwillnowofmainbelowseveralaspects.1binationlivingcreaturemethod,researchwithdevelopthelivingcreaturemodelCarrouseloxidizetheditch.Likethiscannotonlyincreasesthemicroorganismgrossoftheunitreactormeasures,frombutincreasestheorganismcarries,butalsolivingcreatureoneselftheinsidethathaveplacestheA/thesystemofOenhancestotakeoffthenitrogenresult[18].2IncreasescontinuouslytheCarrouseloxidizethemicrobialactivityininsideinditch.ForexamplethrowtoaddtheEMinoxidizeditchwithsinglemindthegermgrow,throwsinthatthesaltofironmakethemicroorganismtamethelivechariniron,devotioninlivingcreaturetobeetheformationtostrengthenthegermgumregimentandincreasestobearthetoxicitypoundatetc..-.可修编.\n-.3IncreasingtheCarrouseloxidizestheditchequipmentsfunctionwithsuperviseandcontrolthetechnique.Functionthatincreasesformmachine,underwaterpropeller,reducetomaintaintheworkload;MakinguseofDO,etc.ofORPmanytargetssupervisesandcontrolthetechniqueandchangesthetechniqueofisfromnowontheCarrouseloxidizesditchsciencecirculatenecessarilyfromitroad.4IncreasingtheCarrouseloxidizestheditchresistanttocoldandbeartoxicitycan,reducetocovertheareatobuildthepricewiththeengineering.Theoreticalapplication,deeppondinwaterpowertermwiththeresearchofthecraftfunctionistolowerstheengineeringbuildsthepriceandincreasesresistanttocoldbearthetoxicitycanwaittoprovidethepossibledirection.-.可修编.