EGSB工艺处理淀粉废水及沼气高值利用刘建广

1Tab.1DesigninfluentqualityanddischargestandardCOD/mg·L-1BOD5/mg·L-1ρ(TKN)/mg·L-1ρ(NH3-N)/mg·L-1ρ(SS)/mg·L-1pH10000≤2005500≤30300--≤251500≤705～66～9、、、[1]。97%。30。。1、[2]3000m3·d-11。65%、11000mg·m-390%、[3]≤20mg·m-3GB17820－1999。22.11、。EGSB-A/O。EGSB12331.2501012.2501013.250101EGSB-A/O。35℃EGSBCOD20kg·m-3·d-1COD、BOD5SS98.5%、99.5%、95%。98%、20mg·m-36000m3。X792B1000-3770(2011)[e-mail]1Fig.1Schematicofwastewatertreatmentandbiogaspurificationprocess
 !#37720117TECHNOLOGYOFWATERTREATMENTVol.37No.7Jul.,2011130DOI:10.16796/j.cnki.1000-3770.2011.07.036、[4-5]。1。2.2pHpH35±1℃EGSBEGSBA/OA/O。。EGSBCO2、H2SH2SCO290%。33.1112h1500m380WL100-9-4Q=80m3·h-1H=9mN=4kW321。3.21150m3321100WL80-20-7.5Q=80m3·h-1H=20mN=7.5kW、2、pH2。3.3EGSB2COD20kg·m-3·d-1D=7m、H=16m615m3、604m3。321150WL110-10-5.5Q=110m3·h-1H=10mN=5.5kW。3.4A/O4000m33760m3321D70-1.6Q=70m3·min-1p=0.068MPaN=90kW。3.511。2h0.8m3·m-2·d-114m100WL80-9-4Q=80m3·h-1H=9mN=4kW211。3.6213.65m350℃0.1MPa。3.71.4MPa130m3。44.1EGSB。EGSB、。UASB10kg·m-3VSS/TSS=0.69。COD5000mg·L-1pH6.5～7.535℃1.5m·h-13d。4.0kg·m-3·d-1EGSBCOD90%。COD1kg·m-3·d-1VFA300mg·L-12m·h-1COD80%。SS。COD20kg·m-3·d-1COD8000～12000mg·L-1COD90%。1.0～4.0mm。A/O200%50%～100%。42。2CODBOD5ρ(NH3-N)ρ(SS)EGSBA/O8800～1200012001504500～61004003060～100300251500700702mg·L-1Tab.2TreatmenteffectofmainunitsEGSB131EGSB-A/O。6000m320mg·m-398%。4.2EGSB4.2.1EGSB3。3EGSB2.5mm20%1.0～2.5mm70%10%。。4.2.24。41.0mm57.6m·h-12.4mm144m·h-1。。。。5EGSB-A/O,COD10000t。EGSB10000m360%～70%6000m3。、240.0kW0.50·kWh-10.98·m-368000.04·m-32000·t-1200mg·L-10.10·m-3。1.12·m-3。6EGSB-A/OCOD8000～12000mg·L-1。EGSBCOD20kg·m-3·d-1。。[1],,.[J].,2008,34(10):86-88.[2],,,.UASB[J].:,2006,22(6):962-967.[3].GB17820-1999.[M].:,1999.[4],,,.[J].,2008,29(3):12-14.[5].CO2[J].,2008,27(3):51-52.3Tab.3Distributionofgranulesludgediameterdimension/mm＜11～1.51.5～22～2.5＞2.5/%9.8913.3225.8730.820.124Tab.4Sedimentationperformanceofgranulesludge/mm1.01.31.82.42.9/mm·s-11620324044!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!136377132PILOTSTUDYONPCBHEAVYMETALSWASTEWATERTREATMENTUSINGUF-ROMEMBRANESEPARATIONPROCESZhangLiankai,ZhangZunju,ZhangYiting,SunLei,WangBo,ChengJing(EnvironmentalManagementCollegeofChina,Qinhuangdao066004,China)Abstract:Inthispaper,thePCBindustryheavymetalwastewaterwastreatedbyUltrafiltration(UF)-ReverseOsmosis(RO)processafterpHadjusting.Theresultsshowedthat,UFremovalofturbidityandSSwere97%and73%,ROremovalofCuandTDSwere99.9%,98.9%,whiletherawwastewaterconcentrationswereCu2+60~160mg·L-1,conductivity4.5~6.8mS·cm-1,SS60~80mg·L-1,totalsuspendedsolids(TDS)1600~3200mg·L-1.TheeffluentwatermetthenationalelectronicgradewaterstandardIV(GB/T11446.1－1997);MembranefoulingstudyshowedthatUFrunwith30min,backwashwith5min,trans-membranepressure(TMP)wasnotchangedsignificantly.TheproductionrateandTMPofROmembranewatershowedsignificantnegativecorrelation,thecorrelationcoefficientwas-0.9861.Intheexperiment,thewaytopreventROmembranefoulingwasaddingactivatedcarbon,quartzsandfilterandincreasethefrequencyofbackwash.Thesystemoperatingcostwas3.36yuan·m-3.Thissystemcansavealotofwater,recyclablepreciousmetals,reducethewasteofresources.Therefore,theprojecthasgoodeconomicandenvironmentalbenefits.Keywords:Ultrafiltration(UF);Reverseosmosis(RO);PCB;HeavymetalwastewaterTREATINGSTARCHWASTEWATERBYEGSBPROCESSANDHIGHVALUEUSEOFBIOGASLiuJianguang1,ZhangChunyang2,ZhangGuanglan3,GanHainan3（1.SchoolofMunicipalandEnvironmentalEngineering,ShandongJianzhuUniversity,Jinan250101,China;2.SchoolofThermalEnergyEngineering;ShandongJianzhuUniversity;Jinan250101,China；3.ShandongSifonEnvironmentalProtectionandBio-energyCo.，Ltd,Jinan250101,China）Abstract:Theexpandedgranularsludgebed（EGSB）reactor-A/Oprocesshadbeenusedfortreatinghighlyconcentratedstarchwastewater,andthebiogasproducedinEGSBwaspurified.Undertheconditionof35℃,theCODvolumeloadofEGSBreachesupto20kg·m-3·d-1,andthecombinedprocessremovalratesofCOD,BOD5andSSwere98.5%、99.5%and95%,respectively.Afterbeingtreatedbythecombinedprocess,theeffluentqualitywasabletosatisfythedemandsofdischarge.Afterpurificationtreatment,themethanecontentofbiogaswashighthan98%,andthehydrogensulfidecontentwasbelow20mg·m-3.Thenaturalgasproductionwas6000m3·d-1,thehighvalueuseofbiogaswasachieved.Keywords：starchwastewater;expandedgranularsludgebed;aerobicprocess;biogas132129COMPARISONOFFOURKINDSOFRURALDOMESTICWASTEWATERTREATMENTINNANHUIDISTRICTSHANGHAIWangYunlong1,ZhangZhisheng1,TaoQi1,LiuZhigang2,MaLuming2(1.NanhuiEnvironmentalPlanningInstitute,Shanghai201300,China;2.CollegeEnvironmentalScience&Engineering,TongjiUniversity,Shanghai200092,China)Abstract:Sewagepollutioninruralareashasbecomeincreasinglyserious,itisveryimportanttochooseasuitabletechnologybasedonthecurrentstatusofruralareas.Bycomparingtheeffect,managementandinvestmentetc.of4kindsofsewagetreatmentprocesswhichhasbeenoperatedinNanhuiDistrict,Shanghai,somereferencesinchoiceofsewagetreatmenttechnologyinsomeruralareasmaybegiven.Resultsshowedthatintegralbiologi