PACT工艺处理PAM生产废水的实验研究周晓霞

4　4环境工程学报Vol.4,No.420104ChineseJournalofEnvironmentalEngineeringApr.2010PACTPAM周晓霞　孙亚兵＊　李　署　冯景伟　朱洪标　邹　婷　付玉玲(,,210093)　　(PACT)(PAM)。(PAC),PAC、、。:PAC,,;PAC500mg/L、10h,PACTPAM,COD80.8%,BOD583.8%,(AM)84.2%。　PACT　PAM　　　X703.1　　　A　　　1673-9108(2010)04-0817-05TreatmentofpolyacrylamidewastewaterbypowderactivatedcarbontreatmentprocessZhouXiaoxia　SunYabing　LiShu　FengJingwei　ZhuHongbiao　ZouTing　FuYuling(StateKeyLaboratoryofPollutionControlandResourceReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093,China)Abstract　Powderactivatedcarbontreatment(PACT)processwasusedtotreatpolyacrylamidewastewaterpretreatedbyattapulgite.Theeffectofpowderactivatedcarbon(PAC)additiononactivatedsludgesystemwasinvestigated,atthesametime,theinfluenceofPACadditionamount,aerationtimeandhydraulicretentiontime(HRT)ontheremovalrateofpollutantswerealsodiscussed.TheexperimentalresultsshowedthattheaddingofPACcouldincreaseDOutilizationefficiency,improvesludgesettlingpropertyandenhancetheremovalefficiencyoforganicmatter.WhentheadditionamountofPACwas500mg/Landaerationtimewas10h,theremovalratesofCOD,BOD5andAMwere80.8%,83.8%and84.2%,respectively.Keywords　PACTprocess;polyacrylamidewastewater;powderedactivatedcarbon;acrylamide:(WTWER0709):2009-04-07;:2009-06-30:(1985～),,,。E-mail:[e-mail]＊,E-mail:[e-mail]　　(polyacrylamide,PAM)(C2H5NO,acrylamide,AM),50%AM。PAM、、、,、、,“”[1]。2002PAM20×104t/a13×104t/a,200650×104t/a32×104t/a[2]。PAM,PAM,PAM。PAMPAMAM。PAM,PAM100mg/L,,[3]。AMAA(IACR,1993),,,IARCACGIH0.03mg/m3,WHO0.0005mg/L[1]。(HPAM)[4～9],PAM[10]。,PAM。(PACT)PAM,PACTPAM,。PACT(powderactivatedcarbontreatmentprocess)(PAC),1。4(DuPont)1972。PACT,、、、、[11]。1　PACTFig.1　ProcessflowdiagramofPACT1　1.1　PAM。PAM,:pH6.5,TN20mg/L,BOD5380mg/L,COD1100mg/L,AM600mg/L,PAM40mg/L。,PAM,,PAMAM,AM。0.075～0.15mm。1.2　PACT2。,10L,6。[12]:13.9L/min,2.5g/L,0.3kgBOD5/(kgMLSS·d),20～30℃。1.3　COD:;BOD5:BOD-220A;pH:;DO:YSIMod-el52;AM:198nm[13];PAM:-[14]。1.4　1.4.1　活性污泥培养和驯化,3d12h,,,[15]2　Fig.2　Schematicdiagramofexperimentalreactor(AM)。1.4.2　PAC吸附DO实验250mL,PAC(100),YSIModel52,[16]。20℃;2h。1.4.3　污泥沉降性能对比实验PAC,PAC0、150450mg/L。3。1.4.4　有机物降解性能对比实验3(PAC)、(AS)、(PAC+AS),。2,、,。PAM,COD500mg/L。2　2.1　PAC,,,、。PAC、、。2.1.1　PAC的投加对水中溶解氧(DO)的影响DO。3,PAC,;DO,PAC。PAC8184:PACTPAM(PAC1g/L,2h,DO1.2～2.4mg/L,PACDO1.2～2.4mgDO/gPAC,1200～2400mgDO),。3　PACDOFig.3　EffectofPACdosagesonDOconcentrationinaqueoussolution2.1.2　PAC的投加对污泥沉降性能的影响,。SVI157mL/g。4:PAC,SVI,。PAC150mg/L,SVI126mL/g;PAC450mg/L,SVI107mL/g。2.1.3　PAC的投加对有机物去除的影响1:(PAC)、(AS)-(PAC-AS)[17],0.0009、0.0020.0027(e,d-1)。(PAC+AS)K(AS)(PAC)1.353。,(PAC+AS)(PAC)(AS)。5,(PAC+AS)COD(PAC)(AS),PAC。1　AMTable1　First-orderdynamicsmodelofAMkd(d-1)R2PACln(S0/S)=0.0009t0.00090.9773ASln(S0/S)=0.0020t0.00200.9952PAC+ASln(S0/S)=0.0027t0.00270.99582.2　PACPACTPAM,COD500mg/L。6。4h,PACCOD。,,PACCOD。PAC,PAC,PAC,。PACCOD。6,PAC,PACTCOD,,,,PAC500mg/L。81946　PACCODFig.6　EffectofPACdosagesonoutflowCODconcentrations2.3　PACT(HRT)PACT。2。2　CODAMTable2　EffectofHRTonoutflowCODandAMHRT(h)COD(%)AM(%)1080851580.585.62080.885.7258186.13081.186.22,CODAM,PACT。10h,COD80%,AM85%,、。,,10h。2.4　PACTPAM,PAC500mg/L,10h,1hCOD、BOD5、AM、pH,20minDO。7～9。7,COD、BOD5。6h,COD、BOD5。8h,COD、BOD5。COD1100mg/L210.9mg/L,80.8%;BOD5380mg/L61.5mg/L,83.8%。,。8,2hAM,PAM,PAM,PAM,AM,AM。,AM,。10h,AM9　DOFig.9　ChangeofDOconcentrations8204:PACTPAM600mg/L95mg/L,84.2%,,,AM。9DO7COD、BOD5。9DO80min,7COD、BOD5,2hCOD、BOD5,DO。PACDOPAM。380min,PACDO,DO。8,2h,PAM,PAMAM,AM,COD、BOD5;2h,AM,COD、BOD5。,DO,PACDO,,DO。9,,DO5.28mg/L,DO6.85mg/L。DO500min,7、8。3　　(1)PAC。PACDO,PAC1g/L,gPAC1.2～2.4mgDO;PAC,PAC450mg/L,SVI157mL/g107mL/g;PAC,(PAC)、(AS)-(PAC-AS)K0.0009、0.0020.0027(e,d-1),(PAC+AS)(PAC)(AS)。(2)PACTPAM。:0.3kgBOD5/(kgMLSS·d)、13.9L/min、2.5g/L、20L/d、20～30℃、PAC500mg/L、10h,COD80.8%,BOD583.8%,(AM)84.2%。[1],,,..:,2006[2].PAM:.,2008,(5):52～53[3],,,.NaPAM.,2007,1(7):47～50[4],,,.HPAM.,1997,16(6):560～565[5],,,.(HPAM).,2008,(2):1～9[6],,,..,2006,27(1):151～53[7]KunichikaN.,ShinichiK.Isolationofpolycrylamide-de-gradingbacteria.J.Ferment.Bioeng.,1995,80(4):418～420[8]Kay-ShoemakeJ.L.,WatwoodM.E.,LentzR.D.,etal.Polyacrylamideasanorganicnitrogensourceforsoilmicroorganismswithpotentialeffectsoninorganicsoilnitro-geninagriculturalsoil.J.SoilBiol.Biochem.,1998,30(8/9):1045～1052[9]LentzR.D.,SojkaR.E.,FoersterJ.A.Estimatingpolyacrylamideconcentrationinirrigationwater.J.Envi-ron.Qual.,1996,25(5):1015～1024[10],,.SBRPAM.(),2003,35(6):75～77[11],.PACT.,2000,20(1):10～12[12]..:,2005.38～43[13],,,..,2005,(1):81～83[14],,,..,2003,41(2):224～227[15],,,..,2008,28(6):1074～1078[16],,,..,1992,13(6):23～28[17].(2).:,1993821