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UASB-杨正亮1,王正林2,冯贵颖1*,呼世斌1,单丽伟1(1., 712100;2., 214031) 采用UASB-化学混凝技术组合对草浆造纸废水进行处理。结果表明,接种颗粒污泥的二级启动,大大缩短了反应器的启动时间。在水力停留时间(HRT)6h,进水COD逐渐提高的情况下对颗粒污泥进行驯化,20d后pH、COD去除率趋于稳定。另外,通过L9(34)正交试验,研究了混凝中4因子影响大小的排序,并在最优条件下对UASB反应器出水进行混凝处理。组合技术处理的出水水质指标符合国家造纸工业污水排放标准。 UASB;化学混凝;草浆造纸废水 X793 A 1005-7021(2007)01-0030-05TreatmentofStraw-Pulp-PapermakingEffluentwithUpflowAnaerobicSludgeBlanket-ChemicalCoagulationTechnologyYANGZheng-liang1,WANGZheng-lin2,FENGGui-ying1,HUShi-bin1,SHANLi-wei1(1.Sci.Coll.ofNWAgric.&Forest.Univ.Yanglin,Shaanxi712100;2.WuxiWaterSupplyCo.Wuxi,Jiangsu214031)Abstract Upflowanaerobicsludgeblanket(UASB)-chemicalcoagulationtechnologywasadoptedtotreatef-fluentofstraw-pulp-papermaking.Theresultsshowedthatapplyinginoculationparticlesludgeintosecondaryoperation,thestarttimeofreactorhasbeenshortenedgreatly.WithHRT=6handinfluentCODincreasedgradually,particlesludgewastamedtheneffluentpHandCODremovalratewasheadingforstability20daysaftertheoperation.Inaddition,activeforcegradesoffourfactorsconcerningthecoagulationwerestudiedthroughorthogonalexperiment,andfinallytheeffluentofUASBreactorwascoagulate-treatedundertheopti-mumconditions.Thequalityofeffluenttreatedwiththecombinationoftechnologymeetswithnationalpaper-makingindustrialeffluentdischargestandard.Keywords UASB;chemicalcoagulation;strawpulppapermakingwastewater UASB(UpflowAnaerobicSludgeBlanket)。UASB,,,UASB,,[1]。,UASB,。2080UASB,、。,,、,,,[2]。 :2006-06-12 : ,,。、。 :(200631) *30微生物学杂志 20071271 JOURNALOFMICROBIOLOGYJan.2007Vol.27No.1,。。,、,、,。,,。,[3]。UASB,2,。1 材料与方法1.1 1.1.1 试验装置1 Fig.1 Testerchart1。UASB,9cm,100cm,5.7L。5。,,。1.1.2 试验用水 。(CODcr)2800～3300mg/L,pH7.3～7.7,(SS)85mg/L,700。,,()(),COD∶ρ(N)∶ρ(P)=350∶5∶1。UASB,:15L13.375g,0.540g,0.030g,Fe2+、Mg2+、Ca2+。1.2 1.2.1 颗粒污泥培养[4] 。UASB,,。,,0.1kgCOD/(KgTSSd)。UASB30d,pH7,COD80%。25d,0.3～0.4kgCOD/(KgTSSd)。。,,2～3cm,。。1.2.2 无机混凝剂与有机助凝剂的复配试验 UASB,,(200r/min)1min,(40r/min),15min。,CODcr、pH、SS。、pH,4。1.2.3 分析项目及测定方法[5] ;pH;;(SS);。2 结果与分析2.1 UASBUASB。,,。3d,,。、COD23。23,UASBCOD,,COD311 :UASB- 。20d,15kgCOD/(m3d),COD75%,,pH7。,,,0.30m3/kg,50%～60%,UASB。,UASB15d,3～5mm,(SVI)15～18mL/g。,UASB,。,UASB,,。2 UASBCODFig.2 CODremovalratesandvolumeloadofthesecondaryoerationinUASB3 UASBFig.3 GasquantityofproductionofthesecondaryoperationinUASB2.2 ,(HRT)6h,COD1000mg/L,,UASB4。4 UASBFig.4 OperationinperiodofUASBdomestication4,UASB4d,COD。8d,CODCOD。20d,pH7.0～7.2,COD50%～60%,。,UASB。UASB,COD、SS(4),,UASBCOD。,UASB。2.3 2,UASB。、、pH。2.3.1 无机混凝剂FeCl3和有机助凝剂PAM的复配试验 43,FeCl3PAM,12。2,4CODFeCl3、、PAM32 27pH。FeCl3PAM,COD。12,FeCl3PAM:FeCl37mL,PAM1mL,pH6.5,4min。2.3.2 无机混凝剂AlCl3和有机助凝剂PAM的复配试验 AlCl3PAML9(34),1、3。1 Table1 ThefactorsandleveltableFeCl3PAMpHAlCl3PAMpH/mL/mL/min/mL/mL/min1114.52224.522425.54535.543736.56846.562 FeCl3PAML9(34)Table2 TheschemeandresultsoforthogonalexperimentL9(34)ofFeCl3andPAMCOD/%ABCDCOD/(mgL-1)COD/(mgL-1)111111219.5634.547.97212221219.5839.531.16313331219.5944.522.55421231219.5419.565.6522311219.5334.572.57623121219.5464.561.91731321219.5299.575.44832131219.5349.571.34933211219.5224.581.59K133.8963.0060.4167.38K266.6958.3659.4558.97K376.1255.3558.0853.16R42.237.652.3314.223 AlCl3PAML9(34)Table3 TheschemeandresultsoforthogonalexperimentL9(34)AlCl3ofandPAMCOD/%ABCDCOD/(mgL-1)COD/(mgL-1)111111219.5484.560.27212221219.5609.550.02313331219.5794.534.85421231219.5479.560.68522311219.5454.562.73623121219.5379.568.88331 :UASB- 731321219.5344.571.75832131219.5369.569.7933211219.5444.563.55K148.3864.2366.2862.18K260.1760.8260.1363.55K368.3358.4759.1558.19R19.955.767.135.36 3,4AlCl3,pH、PAM。13,AlCl3PAMUASB:AlCl38mL,PAM1mL,pH6.5,4min。2.4 UASB(HRT)6h,15kgCOD/(m3d)COD2800～3300mg/L,,FeCl3PAMUASB,4。4 UASB-Table4 ResultsofUASB-chemicalcoagulationexperimentCODSS/pH/(mgL-1)/(mgL-1)2800～3300857007.3～7.71100～1400406007.0～7.2200～30010506.1～6.3/%90～9588.292.8— 4,UASB,FeCl3PAM,UASB-,COD90%～95%,(SS)88.2%,70050,pH6.1～6.3,UASB,。:[1] SchmidtJE,AhringBR.Granularsludgeformationinup-flowanaerobicsludgeblanket(UASB)reactors[J].Bio-technologyandBiogineering,1996,49:229.[2] ,,.()[J].,2000,19(4):8-11.[3] .[M].:,2001.[4] ,,,.(UASB)[J].,2003,31():109-112.[5] 《》.(3)[M].:,1989. 34 27