沸石生物滤池处理低浓度生活污水的工艺性能及影响因素田文华

1,1,2,1(1.,　100084,E-mail:[e-mail];2.,100085):,(ZBAF),0.2m、3mZBAF.,12℃～17℃,1.4h,4∶1,、BOD5、CODCrNH+4-N59NTU、30mg/L、81mg/L16mg/L,3.2NTU、3.2mg/L、14.5mg/L0.5mg/L,.BOD5、CODCr,NH+4-N.:/(C/N),;(N),.2.:;;;;:X773　:A　:0250-3301(2003)05-05-0097::(1968～),,,,.:2002-09-26;:2002-11-27PerformanceandItsInfluencingFactorsofaZeoliteBiofilterforDiluteDomesticWastewaterTreatmentTianWenhua1,WenXianghua1,YangAihua2,QianYi1(1.ESPCStateKeyJointLab.,Dept.ofEnviron.Sci.&Eng.,TsinghuaUniv.,Beijing100084,ChinaE-mail:[e-mail];2.SchoolofWaterResource&Environ.Sci.,ChinaUniv.ofGeosciences,Beijing100085,China)Abstract:Toreusedilutedomesticwastewaterinpowerplantregionasthemakeupofrecirculatingcoolingwater,aren-ovatereactor———zeolitemediabiologicalaeratedfilter(ZBAF)wasdeveloped.ApilotscaleZBAFof0.2mindiameterand3minmediaheightwastestedtotreatdilutedomesticwastewater.Theresultsshowedthatturbidity,BOD5,CODCrandNH+4-Nineffluentwas3.2NTU,3.2mg/L,14.5mg/Land0.5mg/Lwhenthecorrespondinginfluentconcentra-tionwas59NTU,30mg/L,81mg/Land16mg/L,respectively,undertheconditionsoft=12℃～17℃,HRT=1.4handgas/liquid=4∶1.Theeffluentqualitymetthewaterqualitystandardsofthetreatedwaterreusedforcoolingwatermakeup.TheremovalrateofBOD5,CODandturbiditydidnotchangemuchwiththechangeofHRTandtheratioofgastoliquid,butNH+4-Nremovalratechangedgreatly.TheparametersalongthedepthofZBAFshowedthatthebiofilmphasewasabundantincarbon-oxidation/nitrification(C/N)zoneandsimplexinnitrification(N)zone.CiliatewasplentifulinC/Nzone.BiofilminNzonewasmainlyconsistsofnitrifiers.Thepointthatthemumberofciliatede-creasedapparentlywastheboundaryofthetwozones.Keywords:zeolite;biologicalaeratedfilter;domesticwastewater;recirculatingcoolingwater;ammoniaremoval　　,.,,SS、COD、BOD5NH+4-N83,77,50,15mg/L,1/3[1]..《》(),,:5NTU、BOD510mg/L、CODCr60mg/L、TP1mg/L,NH+4-N124520039　　　　　　ENVIRONMENTALSCIENCEVol.24,No.5Sep.,2003DOI:10.13227/j.hjkx.2003.05.018mg/L,,NH+4-N3mg/L..[1].、、、.,NH+4-N,(zeolitemediabi-ologicalaeratedfilter,ZBAF),、、,.NH+4-N,ZBAFNH+4-N[2],;,,[3].ZBAF,、,ZBAF,ZBAF.1　ZBAF200mm,5.5m(1),3.0m、4～6mm[3].0.3m,,.,1.0.3m11,11..,,2～3,(1).,0.5mm,.1　Fig.1　Schemeofexperimentalpilotandflowchart2001-09-10,2002-01-30,4.,3,2..,.1　/mg·L-1Table1　Influentwaterqualityofthebioreactor/mg·L-1pHSSBOD5CODNH+4-NTP1)1)Cl-1/μs·cm-17.5～8.28.5～6330～4248～1728.0～270.9～2.6175～260325～37035～46648～827　1)CaCO31.2m.2　Table2　Experimentalconditions/m·h-11)/L·h-1/h/℃12.22:1601.413～1722.24:1601.414～1734.42:11200.712～14　1)CODCr、BOD5、、TN、TP、NH+4-N、[4].SS,,,:SS=0.959x-6.83(mg/L),R2=0.992.x(NTU).MOT-IC,SONY;SHIMADA.2　2.1　2.1.1　COD、BOD598　　　　　　243COD、BOD5.1.4h,2∶14∶1,COD78%82%,BOD587%90%,93%95%;2∶1,1.4h0.7h,COD78%74%,BOD587%85%,,93%.11,COD、BOD5.3,COD、BOD515.7mg/L、6mg/L3.7NTU,.3　COD、BOD5Table3　InfluenceofHRTandgas/liquidontheremovalofCOD、BOD5&turbidity/mg·L-1/mg·L-1/%/kg·(m3·d)-1149.4～172.2(80.7)1)2.5～30.8(15.7)780.87～3.04(1.43)9COD264.8～104.6(81.2)11.6～15.9(14.5)821.15～1.85(1.44)3348.0～103.0(66.6)14.0～16.0(14.9)741.70～3.64(2.35)3142.35.0870.751BOD5230.03.2900.531340.06.0851.411116.7～94.5(54.3)1.8～4.7(3.0)9317/NTU226.2～79.7(58.9)1.2～8.2(3.2)9515343～55.8(49.4)2.4～4.8(3.7)933　1),2.1.2　NH+4-N2NH+4-N.121.4h,2∶14∶1,1,NH+4-N86%97%,2.5mg/L0.5mg/L。132∶1,2　NH+4-NFig.2　InfluenceofHRTandgas/liquidonNH+4-Nremovalrate1.4h0.7h,1,NH+4-N86%80%,2.5mg/L2.0mg/L.ZBAFNH+4-N.,3NH+4-N,2.3　NH+4-NFig.3　RelationshipbetweenNH+4-Nremovalloadingrateandappliedloadingrateunderdifferentconditions3NH+4-N,,.3100%,,2,0.42kg/(m3·d),0.41kg/(m3·d),97%.1,995　　　　　　3.,BOD、COD,NH+4-N.2.2　TP、TN41、TN、TP、.TN、TP35%17%,、27%11%..,ZBAFTP,TP1mg/L,1/3,TP.,,.4　TN、TP()Table4　TheremovalrateofTN,TPandthedecreaserateofalkalinity&conductivity(average)TN/mg·L-1TP/mg·L-1/mg·L-1/μs·cm-121.41.434582714.01.2250738/%351727112.3　ZBAFNH+4-N[5],NH+4-N2,1,2,COD1,2:/(C/N)(N).129.119.1mg/(L·h),38.218.3mg/(L·h).220℃,14.431.0mg/(L·h),2.1.,:,,,、、、,.,,,C/N,、、.,,.N,C/NN,C/NN.C/NCOD,13,COD1.42.4kg/(m3·d),C/N1.2m1.8m,N1.8m1.2m,NH+4-N.,1,(36h).4(a)0.3m(C/N),,,.4(b),,,,.52.1m(N),COD,,.,,.,,[3],NC/N2.1.BAF,,,,[6],C/N,N,NH+4-N.NH+4-N,.100　　　　　　244　C/N(0.3m,36h)Fig.4　BiofilmphotosbyelectronscanmicroscopeinC/Nzone(0.3m,36h)5　N(2.1m,36h,×5000)Fig.5　BiofilmphotobyelectronscanmicroscopeinNzone(2.1m,36h,×5000)3　(1)ZBAF,、BOD5、CODCrNH+4-N59NTU、30mg/L、81mg/L16mg/L,1.4h、4∶1,、BOD5、CODCrNH+4-N3.2NTU、3.2mg/L、14.5mg/L0.5mg/L,,.(2)ZBAFBOD5、COD,NH+4-N.1.4h0.7h,4∶12∶1,NH+4-N6%10%.(3):/(C/N),,;(N),,.2.NH+4-N,.:1　,,..,1999,15(3):53～58.2　OldenburgM,SekoulovI.Multipurposefilterswithion-exchangerfortheequalizationofammoniapeaks.Wat.Sci.Technol.,1995,32(7):199～206.3　,,..,2003,:1～3.4　.(3).:,1998.5　.[D].:,2003.6　GilmoreKetal.Influenceoforganicandammonialoadingonnitrifieractivityandnitrificationperformanceforatwo-stagebiologicalaeratedfiltersystem.Wat.Sci.&Tech.,1999,39(7):227～234.1015