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MBBR楼洪海 王 琪 胡大锵 张世新(,310012) 根据某化工污水的水质水量特点,采用预处理+AO+MBBR工艺,在试验期间发现该工艺不但能够稳定去除COD,且能高效的去除凯氏氮,去除效率能够达到95%以上,并且对后段的MBBR工艺的填料进行了跟踪监测,未发生钙离子的沉积,因而不会对系统产生影响。 化工废水 钙离子 MBBR工艺 高浓度凯氏氮 AOO,,,,Ca2+、S2-。,,MBBR,,。1 1.1 原水水质,1。,,,TKN120～220mgL。 1 mgL(pH)CODBOD5SSTKNCa2+S2-pH1010≥606≤7080～100300～50060～707～81.2 工艺流程及主要装置AOO(1),AO,,14400m3d。2,100Lh,24h。1 、MBBR2 ,MBBR,,。、2。2 2.1 启动及运行条件20074,,。MBBR,2 、0.6m×0.6m×1.5mFeSO4,NaHCO30.6m×0.6m×1.5m0.9m×0.9m×1.5m0.9m×0.9m×1.5mMBBR2.5m×0.5m×1.5mB-Cell0.5m×0.5m×1.5mNaHCO3,。,61 200812266DOI:10.13205/j.hjgc.2008.06.018,,。,MLSS4832mgL,MBBRMLSS5091mgL。DO0.5mgL,DO2～3mgL,MBBRDO3～4mgL,pH7.4～7.5,[1-2]。2.2 预处理效果FeSO4,NaHCO37.7,Ca2+,S2-。Ca2+300mgL,S2-1mgL。S2-,S2-,Ca2+,,。2.3 COD去除效果,COD1000mgL,,,COD,,CODTKN6.6[2],ρ(COD)ρ(TKN)4.5～8.3,69%。COD,COD100mgL。320078—9,COD40～80mgL,93.3%,《》(GB8978-1996)。3 COD2.4 氨氮去除效果420078—9,120～220mgL,95%,。MBBR,,,,0.018kg(kg·d)。20079,8,。1—;2—;3—;4—。4 2.5 MBBR池填料钙离子分析,Ca2+[3],,,,,O。Ca2+,MBBRCa2+。52.13%,71.89%,91.04%。Ca2+,MBBR,Ca2+。。3 (1),S2-,Ca2+,,。(2)100Lh,COD1000mgL,COD80mgL,COD93.3%,。(3)MBBR,95%,0.018kg(kg·d)。(4)MBBR,,。[1] ..:,2006:210[2] ,,..:,2002:376-381[3] ..,2001,32(1):45-47 310012 478C-406 (0571)878967772007-12-0362 200812266showedthattheimprovedmethodwassimpleandimplementedeasily.Theaccuracyofthemethodwashighandthedeterminingresultscouldre-flectbasicallythedegreeofpollutioncausedbytheoxygen-demandingorganicmattersinsediment-ladenwater.Keywords sediment-ladenriver COD monitoringmethod improvingPILOT-SCALETESTONTREATINGTHECHEMICALWASTEWATERBYMBBRPROCESSLouHonghai WangQi HuDajiangetal(61)………………………………………………………………………………Abstract Accordingtothefeaturesandquantityofachemicalwastewater,pretreatment-AO-MBBRprocesswasadopted.Inthecourseoftesting,notonlytheCODcouldberemovedsteadilybutalsotheTKNcouldberemovedefficiently,theremovalefficiencywasmorethan95%bythisprocess.AndatracemonitoringofCa2+inthefillingsoftheMBBRtankwasdoneandadepositionofCa2+didnothappen,sothesystemwasnotinfluenced.Keywords chemicalwastewater Ca2+ MBBRprocess highconcentrationTKNAEROBICACTIVATEDSLUDGEGRANULATIONANDITSCHARACTERISTICSINACONTINU-OUS-FLOWCOMPLETELYSTIRREDTANKREACTOR(CSTR)ShenYaoliang LiYuan SunLizhu(63)…………………………………………………………………………………………………………………………………Abstract Thelaboratory-scalestudywascarriedoutonthegranulationandcharacteristicsofaerobicactivatedsludgeinacontinuous-flowcompletelystirredtankreactorwithacetatesasthecarbonsourceandapreparedwaterbynutrientsandothermicro-elementsasrawwater(COD=150～500mgL,pH=6～7),whichwasinoculatedwithactivatedsludgefromamunicipalwastewatertreatmentplant.Theresultsshowedthatthestramineousaerobicgranulesludgeof1～5mmindiameter(average2～3mm)wasformedafter20doperationatnormaltemper-ature(25～30℃).ThegranulationwasaccomplishedviasuchconsecutiveprocessesasEPSself-flocculation,filamentousbindingandattachmentamongthesmall-sizedgranules,andfourstepsincludinginnernucleusformationandflocculation,granuleformationandmaturationwerefoundduringtheaerobicsludgegranulation.Thereactorwasoperatedstablyandefficiently,andtheremovalratesof85%～90%,90%and50%～70%forCOD,NH+4-NandPO3-4-PrespectivelywereobtainedundertheconditionsofHRTbeing2.82handorganicloadingrate4.24kg(m3·d).Theaerobicgranulesshowexcellentsettlingperformancewithsettlingvelocityof30～58mh.Keywords completelystirredtankreactor activatedsludge aerobicgranulesludge characteristicsTHESTUDYONTREATMENTOFPAPER-MILLMID-STAGEWASTEWATERBYHYDROLYTICACIDIFICATION-ACTIVATEDSLUDGEPROCESSZhangBeiping LiWei LuXiejuanetal(67)………Abstract Thehydrolyticacidification-activatedsludgeprocesswasusedtostudypulp-millmid-stagewastewater,whichwascharacterizedbyhighconcentrationofCOD,withanemphasisontheeffectandparametersofhydrolyticacidificationandactivatedsludgeprocess.Experimentalresultswereshownasfollows:whenthetemperaturewasunder40℃andhydraulicretentiontime(HRT)was10h,theremovalrateofCODwasabout34%.Thetechnologicparametersofthelateractivatedsludgewere:hydraulicretentiontimewas12h,theDOofthemixedliquidwas4mgL,theremovalrateofCODwasabout80%.Asaresult,CODintheeffluentcouldmeettheemissionstandardspecifiedby“WastewaterPol-lictantEmissionStandardofPapermakingIndustry”(GB3455-2001).Butwhenthetemperaturewashigherthan40℃,theremovalrateofCODinthemid-stagewastewaterwasabout55%.Theeffluentcouldnotmeettheemissionstandard.Keywords mid-stagewastewater hydrolyticacidification activatedsludgeprocessTECHNICALANDECONOMICALCOMPARISONOFWATERCOOLINGSYSTEMOFBLASTFURNACEWangLing ChenJiliang(71)……………………………………………………………………………………Abstract Taking2500m3blastfurnaceasexample,technicalflow,characteristicandeconomicalbenefitofrecycledwatercoolingsystemareanalyzed,anditisproposedtouseclosedrecycledsoftwatertechnicsandevaporatedaircoolingequipmentseparately,whichisimportanttosavewaterandenergyinironandsteelplants.Keywords boilfurnace separatedclosedsoftwatercirculationcoolingsystem cleanopen-cyclewater evaporativeaircooler plateex-changer economicbenefitCOMPARISONANDCHOICEOFFLUEGASDESULFURIZATIONPROCESSESLiaoChuanhua ZhouLing ZhuTingfengetal(74)…………………………………………………………………………