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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > 短程硝化过程中有机物浓度检测校核方法研究刘海秋
短程硝化过程中有机物浓度检测校核方法研究刘海秋, 傅金祥, 商 涛(沈阳建筑大学市政与环境工学院,辽宁沈阳110168) : 配置不同浓度的葡萄糖溶液、NaNO2溶液及混合溶液,考察了NO-2对有机物测定结果的影响,并在已实现短程硝化的SBR反应器中研究了有机物在亚硝酸盐积累过程中的降解情况及其对短程硝化的影响。结果表明,测定含NO-2废水中有机物浓度时需要采用公式COD校核=COD实测-[NO-2-N]COD计进行校核。在DO较低(0.8~0.2mg/L)时,系统可承受较高的COD浓度,NO-2-N不会对细菌产生毒害作用,且系统在较高COD和NO-2-N浓度下会发生明显的短程反硝化。 : 短程硝化; NO-2-N; COD; 校核; C/N:X703.1 :A :1673-9353(2011)01-0031-05doi:10.3969/j.issn.1673-9353.2011.01.009VerificationmethodforthedetectionoforganicsinshortcutnitrificationLiuHaiqiu, FuJinxiang, ShangTao(SchoolofMunicipalandEnvironmentalEngineering,ShenyangJianzhuUniversity,Shenyang110168,China) Abstract: TheeffectofNO-2onthemeasurementoforganicswereinvestigatedbypreparingglucosesolution,sodiumnitritesolutionandglucose-nitritemixedsolutionindifferentconcentrations,andthedegradationoforganicsanditseffectonshortcutnitrificationduringnitriteaccumulationwerestudiedintheSBRwhichhadachievednitrification.Theresultshowedthattheorganicsconcentrationwasverifiedintermsoftheformula(modifiedCOD=measuredCOD-[NO-2-N](inCOD))asNO-2existinginwastewater.ThesystemcouldendurerelativelyhighconcentrationofCODandNO-2wasnotsotoxictothebacteriainthecaseoflowconcentrationofDO(0.2to0.8mg/L),meanwhileshortcutdenitrificationwassignificantinthesystemwhentheconcentrationofCODwascomparativelyhigh. Keywords: shortcutnitrification; NO-2-N; COD; verification; C/N :(SZ200902) C/N(≤4),,。,[1-2]。C/N,,。·31·5 120112 WATERTECHNOLOGY Vol.5No.1Feb.2011,COD200mg/LC/N≤1,NO-2COD,,[3]COD,COD,,,COD。,,,,COD,,。NO-2-N,;,SBR,。1 试验材料与方法1.1 SBR,,1m,0.14m,15L,1。,,、。,,DO。1 Fig.1 Experimentalapparatus1.2 :NH+4-N,50~200mg/L(NH4Cl);COD,100~800mg/L();NaHCO3pH8.0;CaCl2,0.033g/L;MgSO4·7H2O,0.053g/L;KH2PO4,0.07g/L。:EDTA,20g/L;FeCl3·6H2O,1.5g/L;H3BO3,0.15g/L;CuSO4·5H2O,0.03g/L;KI,0.18g/L;MnCl2·4H2O,0.12g/L;NaMoO4·2H2O,0.06g/L;ZnSO4·7H2O,0.12g/L;CoCl2·6H2O,0.15g/L。1mL/L。1.3 NH+4-N:;NO-2-N:N-(1-)-;NO-3-N:;COD:;DO、:LODTM();pH:ZD-2;:;《》(4)SV30、MLSS、SVI、MLVSS[4]。2 结果与讨论2.1 ,(29~32℃),pH7.8~8.2。:,,。24h1:—6h—2h—,。SV3048.5%,MLSS4.928g/L。2,NH+4-N50mg/L150mg/L,COD100~300mg/L,DO0.8~0.2mg/L,6hNH+4-N97%,,80%,。SV3031%,MLSS8.595g/L,SVI36.067mL/g,MLVSS6.693g/L。70%。,1h,NH+4-N、NO-2-N、NO-3-N、COD。2.2 NO-2-NCOD,6h、,,,。·32·5 1 20112,8h,。NH+4-N、NO-2-N、NO-3-N、COD,,COD,2。COD83.75mg/L,40min,COD,3hCOD,。2 CODFig.2 VariationandverificationcurveofCODinshortcutnitrification《》(4):,NO-2。: C6H12O6+6O26CO2+6H2 2NO-2+O22NO-3,1mol6mol,COD192mg/L,1molNO-2COD16mg/L,NO-2,NO-2-NCOD。、NaNO2,NO-2。NO-2-N20~200mg/L,NO-2-N。NO-2-NCOD:[CODNO-2-N]=[NO-2-N]/14×16。NO-2-NCOD(COD)COD(COD)3,。NO-2COD,COD191mg/L,NO-2-N;NO-2-N148mg/L,(1),CODNO-2-N[CODNO-2-N]=[NO-2-N]/14×16。4COD,,NO-2-NCOD,400mg/L。,NO-2CODCODNO-2-N,COD=COD-[NO-2-N]COD。3 [NO-2-N](COD)CODFig.3 Relationsoftheoretical[NO-2-N](inCOD)andmeasuredCOD1 NO-2Tab.1 TheoreticalandmeasuredvalueoforganicandNO-2mixedsolutionCOD(T+N)235.5303.6417.1530.5644.0COD242.6310.7412.8532.0622.8COD(T+N)218.4265.7360.3549.5738.7COD211.4262.5353.3543.4730.64 NO-2-NFig.4 TheoreticalandmeasuredvalueoforganicandNO-2-Nmixedsolution2.3 COD2.3.1 NH+4-N130mg/L,·33·20112,:5 16h(NOB),90%,(FA)、。FANOB,,SBRNO-2-NCOD。1,NH+4-N62mg/L,128minNH+4-N,NO-2-N,212minAOB,DO,DONOB,30℃、pH8,76mg/LNO-2-N(FNA)0.0015mg/L,NOB。12mg/LNO-2-NNO-3-N,70%,FA、DONOB,,,NO-2-N。NO-2-N,(COD)60mg/L,COD40min83mg/L38mg/L;40~128min90mg/L,;128~340minCOD,。NO-2-N,COD=COD-[NO-2-N]COD,COD。,,40minCOD[NO-2-N]COD,COD2~5mg/L,。,CODSBR。2.3.2 NH+4-N137.7mg/L、COD566mg/L、C/N4。FA(12.5mg/L)(AOB),NH+4-N;,AOB,7h。5,CODNO-2-N,COD,,。TN53mg/L,NO-2-N,。5 Fig.5 InfluenceofrelativelyhighorganicconcentrationonshortcutnitrificationC/N6.5,566mg/LTN87mg/L,TN:,,COD,,;,,,TN;,FNA,,,TN。,1h,NO-2-N,,,NO-2-N。NO-2-NCODCOD6。6 NO-2-NCODFig.6 RelationsofNO-2-NanddegradationofCOD·34·5 1 20112 ,COD,COD800mg/L,COD100mg/L,NO-2-N150mg/L,COD。3 结论① NO-2-N,,COD:COD=COD-[NO-2-N]COD,[NO-2-N]COD=[NO-2-N]×16/14,CODNO-2-N。② NH+4-NAOBDO,,,COD50~100mg/L,NO-2-NCOD。③ COD,TN,CODNO-2-N,。:[1] VandeGraafAA,DeBruijnP,RobertsonLA,etal.Autotrophicgrowthofanaerobicammonium-oxidizingmicro-organismsinafluidizedbedreactor[J].Microbiology,1996,142(8):2187-2196.[2] ,,,.[J].,2009,29(10):2041-2047.[3] ,,.SBR[J].,2002,18(11):13-18.[4] ,《》.(4)[M].:,2002.E-mail:liuhaiqiu0807@163.com:2010-11-18《供水技术》(双月刊)征稿启事《供水技术》杂志创刊于2007年,由天津市自来水集团有限公司主办、主管,其国内统一连续出版物号为CN12-1393/TU。《供水技术》针对国内外供水行业存在的热点、焦点问题、技术前沿问题,致力于传播和交流先进技术与成熟的经验,提高专业人员技术素质。《供水技术》着眼于供水企业的运行、生产、营销、服务、施工等方面的技术工作,进行广泛的交流与研讨,内容涉及水厂设计、老水厂改造、水厂自动化、污泥处理与综合利用、水质检测、区域计量、管网改造、管网模型管理维护、管网运行新技术、营销新技术、新型水表应用、电子收费系统、工程施工新技术、二次供水新技术、再生水回用、海水综合利用等等;对供水企业现实生产中遇到重点与难点问题进行研讨,力求为供水企业开辟一块新的交流阵地。《供水技术》栏目设置分为:研究论述、技术总结、设计经验、工程实例、运行管理、分析监测、节水与回用、施工与监理、信息动态等。欢迎广大读者、作者朋友踊跃向我国供水行业“业内”杂志———《供水技术》投稿,相信我们会为大家提供更优质的服务,搭建更广泛的技术交流与研讨平台。电话:022-23392157 23310823 传 真:022-23392157网址:@126.com·35·20112,:5 1
本文标题:短程硝化过程中有机物浓度检测校核方法研究刘海秋
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