UASB工艺在处理淀粉废水中的应用张群绸

UASB张群绸　仝攀瑞(,710048)　高玉松(,102600)　采用常温UASB反应器为主要单元,微动力好氧的滴滤床为辅的工艺处理食品废水。工程运行表明:当进水CODCr浓度为1000～3000mgL时,出水CODCr浓度可降至50～90mgL。此工艺投资省、运行费用低、操作简单,可获得较好的经济效益和环境效益,能广泛应用于淀粉废水处理的实际工作中。　食品工业废水　淀粉废水　上流式厌氧反应器(UASB)　滴滤床(TF)1　,,8000～12000t,5000～8000t。。、、。,。、、、。1600m3d,《》(GB8978-1996)。2　(、)(、、),、、。,,。、,-,,(UASB)、、、。,(TF)。,。3　3.1　工艺流程1。3.2　工艺流程说明,1　。UASB。UASB,。0.5～2.5mh,,。、、,,,UASB,。UASB,(),UASB。,,,,。UASB-TF,95%。,,pH、CODCr、BOD5、SS。1。4　4。4.1　污泥驯化期UASB25　　　20064242DOI:10.13205/j.hjgc.2006.02.0081　mgLCODCrBOD5SS+30001200250030001200500UASB30001200500300120200300100200902060,UASB。。。CODCrCODCr75%,,,。CODCr2.0kg(m3·d)。4.2　颗粒污泥形成阶段,,。,、,1～1.5mm。CODCr2.0～5.0kg(m3·d)。4.3　逐步提高负荷期,20%、30%、40%……90%、100%9,CODCr,CODCr10d,。,,。。0.1～0.5mm,,,。CODCr3.0kg(m3·d)。4.4　满负荷运行期,,。,,,,CODCr8.0kg(m3·d),CODCr84.3%～91.5%。,,,,1.0～5.0mm。UASB,。UASB35℃,100m3h,,,UASBTF。,UASB、pH、,UASBpH6.8～7.2。。,。2。2　%CODCr(mg·L-1)30009095.5BOD5(mg·L-1)12002098.3SS(mg·L-1)25005098pH5～67～88020755　(1)、,、,。(2),;(),。(3),,。UASB,(),。(4)、、CODCr(95%)、、。(5)UASB-TF,,。[1]　.--SBR.,1998,6(5):19-21.[2]　.().:,1993.[3]　..:,1992.[4]　,,..:,2002.[5]　..:,2003.　　710048　19　123#　[phone]E-mail　[e-mail]2005-08-0126　　　20064242Abstract　Thesilk-makingwastewaterwastreatedbyair-floatationandSBRprocess.Theeffluentqualityconformedtothefirst-ordercriterionofGB8978-1996.Combiningtheengineeringpractice,itwasgivensomeexperienceindesignandoperationoftheengineering.Theprocessfeaturedlowcost,simpleoperationandeasymaintenance,whichmayprovideexperienceinsewagetreatmentofsimilarsilk-makingplants.Keywords　air-floatation-SBRtreatmentandsilk-makingwastewaterTHETREATMENTOFFOOD-MAKINGWASTEWATERUSINGUASBPROCESSZhangQunchou　TongPanrui　GaoYusong(25)………………………………………………………………………………………………Abstract　Thewastewaterfromfood-makingstarchproductionisahighly-concentratedorganicwastewater.ItistreatedbyabiochemicaltreatmenttechnologyusingUASBreactorundernormaltemperatureasthemaintreatmentunit,andtricklebedasthesecondaryunit.Thesetechnicsshowthattheuseofthesaidtechnologynotonlysavesinvestment,lowersoperationalcostandsimplifiesoperationbutalsoproducesusablemethanewhilethewastewateraftertreatmentcanmeetthestandardbeforedischargedsothatgoodeconomicandenvironmentalresultscanbeobtained.Keywords　food-makingwastewater,wastewaterofstarchproductionandUASBTREATMENTOFEXPANSIBLEPOLYSTYRENEWASTEWATERBYPROCESSOFFLOCCULATIVESEDIMENTATION-ACTIVECARBONBIOLOGICALTANKLiuXiaodong　NiNing　LiJianshengetal(27)……………………………………………………………………………………………………………Abstract　Expansiblepolystyrene(EPS)wastewaterinvolveslargequantitiesoforganismcontainingbenzeneloopsuchassurfactantLASandsoonwithhightotalPindexandbadbiodegradability.Itishardtotreatit.Theprocessofflocculativesedimentation-activecarbonbiologicaltankisadaptedtotreatEPSwastewater.WhenaverageCODCroforiginalwastewateris1800mgL,thatoftheeffluentcanreachabout80mgLwiththeremovalrateof95.5%.Theeffluentqualityremainsstableandseveralqualityindexesoftheeffluentcanmeetthefirstclasscriteriaspecifiedinthenationaldischargestandard.Keywords　EPSwastewater,activecarbonbiologicaltank,delayedaerationmethodandsurfactantTREATMENTOFCHEMICALWASTEWATERBYHYDROLYTICACIDIFICATION-AOPROCESSLiuBozhi　LiuFaqiang　DingXuehong(29)………………………………………………………………………………………Abstract　Hydrolyticacidification-AOprocessisselectedtotreatchemicalwastewaterofhighconcentrationduetothefactthatthetraditionalactivatedsludgeprocesshasalowremovalrateofNH3-NandtheeffluentCODCrcannotbeuptostandardsteadily.ThetestresultsshowthatthenewprocesshasexcellentdenitrifyingeffectwithCODCrandNH3-Nmeetingthefirst-orderofthenationalemissionstandard.Keywords　chemicalsewage,hydrolyticacidification,AOprocessandbiodenitrogenationTHEDESIGNFORFLUEGASATOMIZINGHUMIDIFICATIONOFSEMI-DRYFLUEGASDESULFURIZATIONShiYingjie　WangFan　WangHongmeietal(31)………………………………………………Abstract　HumidificationplaysakeyroleinSO2removalforsemi-dryfluegasdesulfurization(FGD).Inthearticle.theanalysisisderivedthatperformanceofairatomizingismoreeffectivethanthatofmechanicalatomizing.ThecalculationresultsshowthatdropsizedistributionofFM10airatomizingnozzlecanmeetfluegasconditioninevaporation.Itisdeducedthatatomizingcontrailangleisconstrainedinthefluegasandlayingoutofthenozzleintheductuniformlytoavoiddropfromwettingwall.Fabricfilterissupposedtobeniceinheatpreservationandeasyinashcleaning.Asmooth-surfacedfiltermaterialisselected.Keywords　semi-dryprocess,FGD,airatomizingnozzleandhumidificationTREATINGVOCs-BEARINGEXHAUSTGASBYACTIVATEDCARBONFROMSOLIDWASTESXieLiping　LinWeigang　YangXuemin(34)…………………………………………………………………………………Abstract　ThemaininfluencefactorsontheadsorptiontoVOCsinexhaustgaswithactivatedcarbonfromsolidwastes(SW-AC)areinvestigated.TheresultsindicatedthattheSW-ACcancertainlybeusedforthepurificationprocessofVOCs-bearingexhaustgas.Keywords　VOCs,adsorption,activatedcarbonandtreatmentofexhaustgasTREATMENTOFODORPOLLUTIONFROMAERATIONTANKFORREFINERYBYFIXEDBEDACTIVATEDCARBONADSORPTIONLuQingfang　GuoBingbing(37)……………………………………………Abstract　Odortreatmentinaerationtankbymeansoffixedbedactivatedcarbonadsorptionhasbeenstud