好氧颗粒污泥活性恢复的试验研究刘宏波

刘宏波,　杨昌柱,　濮文虹,　毛羽飞,　张　洋(华中科技大学环境科学与工程学院,湖北武汉430074)　　　:　针对污水处理过程中常因意外事故而需停运这一现象,对停运闲置后的好氧颗粒污泥进行了恢复活性的试验研究。结果表明,经过长达1个多月的停运闲置后好氧颗粒污泥的外部特征仍基本保持完好,但在整个恢复期间,其物理特征变化较大;经过1～2周的恢复性培养,好氧颗粒污泥对有机物的降解速率、硝化速率和反硝化速率基本恢复正常;而且在完全好氧的条件下,好氧颗粒污泥系统不仅能够保证对有机物的良好去除效果,同时还实现了同步脱氮除磷。　　:　好氧颗粒污泥;　活性恢复;　硝化反硝化;　同步脱氮除磷:X703.1　　:A　　:1000-4602(2008)19-0016-04ExperimentalResearchonActivityRecoveryofAerobicGranularSludgeLIUHong-bo,　YANGChang-zhu,　PUWen-hong,　MAOYu-fei,　ZHANGYang(CollegeofEnvironmentalScienceandEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China)　　Abstract:　Consideringfrequentshutdownsofwastewatertreatmentequipmentduetounforeseencircumstances,anexperimentofactivityrecoveryofaerobicgranularsludgeaftertheequipmentshutdownwascarrierout.Theresultsindicatethatthesludge,afteramonthofshutdown,althoughdegeneratedphysicallybyacertaindegree,isstillabletoretainthesphericalstructure.Afterrecoverycultivationfor1to2weeks,thenitrificationrate,denitrificationrateandCODremovalrateoftheaerobicgranularsludgeareimproved.Incompleteaerobicenvironment,therecoveredaerobicgranularsludgeachievessimultaneousnitrogenandphosphorusremovalaswellasCODremoval.　　Keywords:　aerobicgranularsludge;　activityrecovery;　nitrificationanddenitrification;　sim-ultaneousnitrogenandphosphorusremoval　　、,[1～3]。,[4],,,[5]。,,“”,。,,“”。,“”,,。1　试验材料与方法1.1　SBR,200cm,8.4cm,7.5L。,。SBR6h:1min()、342min()352min()、·16·第24卷　第19期2008年10月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.24No.19Oct.200815min()5min(),2min()。3—4,,1。,,(3～6mg/L);pH5.0～7.0。1　Fig.1　Variationoftemperaturewithoperationtime1.2　,600mg/L,MgSO4·7H2O30mg/L,CaCl2150mg/L,NH4Cl30mg/L,K2HPO422.5mg/L,FeSO430mg/L。5L。,1;,、。1.3　COD:,:,:N-(1-)-,:,:,:,:,:。2　结果与讨论2.1　“”,,,(2.0℃),。5min,,,。,。,,,。,,。2.2　2.2.1　“”,2。2　SVIFig.2　VariationofMLSSandSVIwithoperationtime3d,“”,。,5min15min,,SVI,5min,MLSS,7000mg/L,SVI90mL/g。,1“”,,,,,(3)。,,,。3　Fig.3　Variationofgranulationratewithoperationtime2.2.2　,4。·17·刘宏波,等:好氧颗粒污泥活性恢复的试验研究第24卷　第19期4　Fig.4　Variationofgranulediameterwithoperationtime　　4,,“”,,,、,,。,,,,8mm。2.2.3　5。5　Fig.5　Variationofaveragesettlingvelocitywithoperationtime5,5d,,“”,,。,,,70m/h。2.3　,1,COD。MLSS2268mg/L、COD1500mg/L、12.0℃,COD6。6　CODFig.6　RemovalrateofCODbyaerobicgranularsludge,COD9.74kgCOD/(kgMLSS·d),。,,2,。MLSS5376mg/L、130mg/L、14.0℃,0.191kgNH3-N/(kgMLSS·d),,,,。MLSS3000mg/L、72mg/L、14.0℃2mg/L,0.178kgNO-x-N/(kgMLSS·d),,。2.4　2.4.1　COD9.0h、COD800mg/L,COD85%,,。2.4.2　DO3.0～8.0mg/L、0.08kg/(m3·d)0.24kg/(m3·d),4mg/L,·18·第24卷　第19期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。,,。,,“”。,,80%。,TP5.5mg/LTP7。7　TPFig.7　RemovalrateofTPbygranularsludge7,,,60%,80%。,,:,,,,。,,,:,PHB;,,。3　结论①　,,,,。,、,、、SVI8mm、70m/h、7000mg/L90mL/g。②　1～2,,。1,COD9.74kgCOD/(kgMLSS·d);2,0.191kgNH3-N/(kgMLSS·d),0.178kgNO-x-N/(kgMLSS·d)。③　,,COD85%;,3.0～8.0mg/L,80%。:[1]　BeunJJ,VanLoosdrechtMCM,HeijnenJJ.Aerobicgranulation[J].WaterSciTechnol,2000,41(6):41-48.[2]　JangA,YoonYH,KimIS,etal.Characterizationande-valuationofaerobicgranulesinsequencingbatchreactor[J].JBiotechnol,2003,105(1):71-82.[3]　TsunedaS,NaanoT,HoshinoT,etal.Characterizationofnitrifyinggranulesproducedinanaerobicupflowfluidizedbedreactor[J].WaterRes,2003,37(20):4965-4973.[4]　,,.[J].,2008,14(1):19-22.[5]　ZhuJR,WildererPA.Effectofextendedidleconditiononstructureandactivityofgranularactivatedsludge[J].WaterRes,2003,37(9):2013-2018.:(1980-　),　,　,　,　。E-mail:[e-mail]::2008-06-06·19·刘宏波,等:好氧颗粒污泥活性恢复的试验研究第24卷　第19期