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城市污水厂污泥水脱氮技术的应用及进展于莉芳, 彭党聪(西安建筑科技大学环境与市政工程学院,陕西西安710055) : 城市污水处理厂的污泥水具有温度高(30℃左右)、氨氮浓度高(1000mg/L左右)的特点,其水量仅为污水处理厂进水量的1%~2%,但是氮负荷却占总负荷的15%~25%。我国目前已经建成或正在修建的城市污水处理厂均采用将其回流至进水口进行再处理的方法,使得处理系统的实际氮负荷高于设计负荷,致使污水厂面临脱氮不完全的问题。介绍了污泥水脱氮处理技术的应用及进展,重点论述了利用污泥水中的氨氮富集硝化菌并添加于污水处理过程中的强化硝化技术,并对该技术的研究、应用和发展前景进行了探讨。 : 污泥水; 高浓度氨氮; 脱氮; 硝化菌富集; 强化硝化:X703.1 :B :1000-4602(2007)08-0009-05ApplicationandProgressofNitrogenRemovalTechnologyfromSludgeWaterinMWWTPYULi-fang, PENGDang-cong(SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China) Abstract: Sludgewaterinmunicipalwastewatertreatmentplant(MWWTP)ischaracterizedbyhightemperature(30℃)andhighammonianitrogenconcentration(1000mg/L).Thequantityofsludgewateris1%to2%oftheinfluentofMWWTP,butnitrogenloadis15%to25%oftotalload.MWWTPsconstructedorunderconstructioninChinaadoptthemethodofrecirculatingsludgewatertotheinfluentinlet,whichcausestheactualnitrogenloadofthetreatmentsystemhigherthanthedesignload,sothatthereisanincompletenitrificationinMWWTP.Theapplicationandprogressofnitrogenremovaltechnologyfromsludgewaterareintroduced.Theenhancednitrificationtechnologythatnitrifyingbacteriaareenrichedusingammonianitrogeninsludgewaterandaugmentedintowastewatertreatmentprocessisexpoundedmainly,andtheresearch,applicationanddevelopmentprospectofthistechnologyaredis-cussed. Keywords: sludgewater; high-concentrationammonianitrogen; nitrogenremoval; nitrif-yingbacteriaenrichment; enhancednitrification :(863)(2006AA06Z335) 130×104t,10%[1]。,。,。,,·9·第23卷 第8期2007年4月 中国给水排水CHINAWATERWASTEWATER Vol.23No.8Apr.2007,。,,。,。。1 污泥水的水质特性、,(1%~2%)、(30℃)、(1000mg/L,15%~25%)、C/N,[2~10]。,、(、)、。,。20065—8,,[4、9、11~13]1。1 Tab.1 Characteristicsofsludgewaterproudcedduringanaerobicdigestion/℃TSS/(mg·L-1)NH+4-N/(mg·L-1)TKN/(mg·L-1)TCOD/(mg·L-1)SCOD/(mg·L-1)PO3-4-P/(mg·L-1)/(mgCaCO3·L-1)30750~1500d[4]20a630474c500[9]35b225511641218[9]30~321000~3000600~1200800~150075~150e1500~4000[11]301001200d13007103600[12]25~28232~456600~700c7.32800[13]19~31312~739361~468494~548288~732147~41813.2~42.81959~2734* : a.,;b.;c.、;d.;e.;*20065—8。2 污泥水单独处理的研究现状,,,。,,。1。1 Fig.1 NitrogenbalanceofWWTPwithoutandwithseparatesludgewatertreatment 1,,,,。(STOWA),,·10·第23卷 第8期 中国给水排水 。1995STOWA(、MAP/CAFR、)3,Janus,[8]。C/N,(—),。,DelftSHARON,,,40%[13]。MulderSHARONRotterdamDokhaven,90%[14]。1995,Mul-derNH+4NO-3(ANAMMOX),ANAMMOX,OLAND、SHARON—ANAM-MOXCANON,SHARON—ANAMMOXRotterdamDokhaven[15]。—,。(15%~25%),。,SHARON。3 污泥水富集硝化菌强化生物脱氮3.1 ,FISH、PCR,、。,、,(1%~3%),。,,,,,—。,,,。3.2 、:①,;②,。,MalcolmPirniePeterKosInNitri[3];[9];DelftLoosdrechtBABE[4~7];(Scan-DeNi)[16]。3.2.1 InNitri2KosInNitri(inexpensivenitrifi-cation)。2 InNitriFig.2 FlowchartofInNitriprocessInNitri。,(side-streamreactor)(30~35℃,NH+4-N300~900mg/L)(BOD5,,BOD5),25℃,SRT4d,3%。,NH+4-N2mg/L,,40%。,10℃SRT7~10d,13~18d。·11·于莉芳,等:城市污水厂污泥水脱氮技术的应用及进展第23卷 第8期,,InNitri10%~15%[3]。InNitri,,,InNitri。3.2.2 2090,3。3 Fig.3 FlowchartofbioaugmentationPlazaUppsala,,P2P13,P1、P23%、9%,[9]。3.2.3 BABE1999DHVDelft/(biologicalaugmentationbatchenhanced,BABE),4。4 BABEFig.4 FlowchartofBABEprocessInNitri,BABE(),;BABE,。SRT,,BABE,,。,,[4~7]。20021—6Garmerwolde(2520m3)BABE,9.9mg/L13.3mg/L5.2mg/L,BABE(1250m3),。,300m3(10%),2mg/L[6]。BABE200510NetherlandsHertogenbosch(35)。3.2.4 ScanDeNiScanDeNi5。5,,。,,pH,。,ScanDeNi,,[16]。5 ScanDeNiFig.5 FlowchartofScanDeNiprocess·12·第23卷 第8期 中国给水排水 (15)1998ScanDeNi。,8~9℃,TN10mg/L,TP0.2mg/L,BOD5SS5mg/L。4 结论、,1%~2%,15%~25%。,,。,。,,C/N,、。,、,。:[1] ,,,.[J].,2005,(3):11-14.[2],,./(BABE)[J].,2006,22(2):5-8.[3] KosP.ShortSRT(solidsretentiontime)nitrificationprocess/flowsheet[J].WaterSciTechnol,1998,38(1):23-29.[4] BerendsD,SalemS,vanderRoestH,etal.Boostingni-trificationwiththeBABEtechnology[J].WaterSciTechnol,2005,52(4):63-70.[5] SalemS,BerendsD,HeijnenJ.Model-basedevaluationofanewupgradingconceptforN-removal[J].WaterSciTechnol,2002,45(6):169-176.[6] SalemS,BerendsD,vanderRoestH.Full-scaleappli-cationoftheBABEtechnology[J].WaterSciTechnol,2004,50(7):87-96.[7] SalemS,BerendsD,HeijnenJ.Bio-augmentationbyni-trificationwithreturnsludge[J].WaterRes,2003,37(8):1794-1804.[8] JanusH,vanderRoestH.Don'trejecttheideaoftrea-tingrejectwater[J].WaterSciTechnol,1997,35(10):27-34.[9] PlazaE,TrelaJ,HultmanB.Impactofseedingwithni-trifyingbacteriaonnitrificationprocessefficiency[J].WaterSciTechnol,2001,43(1):155-164.[10] AliM,MarquezC,FillosJ,etal.Nitrificationofcentratefromdewateringofanaerobicallydigestedsludge[J].IntJEnvironPollution,1998,9(4):421-431.[11]JohanssonP,NybergA,BeierM,etal.Costefficientsludgeliquortreatment[R].NowyTarg:ProceedingsofaPolish-SwedishSeminar,1998.[12] FuxC,BoehlerM,HuberP,etal.Biologicaltreatmentofammonium-richwastewaterbypartialnitritationandsubsequentanaerobicammoniumoxidation(anammox)inapilotplant[J].JBiotechnol,2002,99(3):295-306.[13] HellingaC,SchellenA,MulderJ,etal.TheSHARON-process:aninnovativemethodfornitrogenremovalfro
本文标题:城市污水厂污泥水脱氮技术的应用及进展于莉芳
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