固化污泥中重金属的溶出特性

~*E-mail:[e-mail]:2008-09-16;:2008-12-30(:50678075),,.,.,pH6,.,,,.,,,,.,[1,2].,[3,4].,,[5~7].,.,,,[8,9].,,,,,[10,11].,.(TCLP),,pH,,[12,13].(acidneutralizationcapacitytest,ANC)(flow-throughleachingtest),.,pH,pH[14,15].,,,[16,17].pH,,.pH,;,,pH=5:1168,.,.11.1,,1.(BDM)Zhao[18].32.5,2.,0.1~0.25mm,,.,3()123,133153,1,23.1w/%50.80ρ/g·cm−31.20wL/%87.11wP/%53.76pH7.31VS/%27.84BDM/%12.02Zn/mg·kg−1625.00Cd/mg·kg−123.202/%CaO48.51SiO215.04Al2O34.72Fe2O32.32MgO1.09Na2O0.09K2O0.72GB/T17671-1999.,.ZnCl2,Zn.,..φ101mm×30mm.,24h,28d.S1,S2S3,.No.1No.2No.3,(3).1.21.2.1.S1,S2S3,,0.5mm.25g,1000mL,120,500mL.,150r/min12h.,24h;2mol/L,702SMTitrino,7pH=12,10,8,7,6,4,2.pH=12,,24h,15mL3500r/min20min,0.45µm.pH(Eh)(EC),(,Hitachi180-80);TOC,[19].,.7.1.2.2.(HumboldtMfg.Co.).1.0×10−5cm/s,3/wt%m/gA/cm2L/cmw/%No.1123361.4078.343.0010.54No.2133333.2075.083.0021.50No.3153300.4070.252.9532.23E:20093961169,,.,-,,[20].,400kPa,,187.5cm,.48hpH=5,,k:1212=ln,()haLkAt-th(1),a(cm2);L(cm);A(cm2);t1t2(s);h1h2t1t2(cm).,,pH,EhEC;0.45µm,(,Hitachi180-80).22.1pH1ZnCdpH.1,,pH,6,,Coz[21].ZnCd.ZnCdCaZn2(OH)6CaCd(OH)4[16],pH,,Zn2+Cd2+,.,.2ECpH.2,pH6,EC,.,,,.3pH.pH,S3;,S1S2pH.Lim[22],.ZnZn(OH)42−Zn(OH)53−.,Ecke[23].;,,Zn.0.45µm,1Zn(a)Cd(b)pH:11702ECpH3DOMpH,.1,pH6,.pH6,meq/g.,.4,,4,pH=6S1,S2S3:0.088mol,0.064mol0.082mol.25g,3.52meq/g,2.56meq/g3.28meq/g.42.25(porevolumesofflow,PV)..,PV=n,n.,ZnCd,.Eh5Zn(a)Cd(b)PVE:20093961171(6),,Eh−100mV,Eh200220mV,,.6EhPV,PV=30,Cd;PV=45,Zn.,,.2.3,,,.,.,pH6,.,(No.1No.2No.3)pH6,.,,Catalan[24],(2):122-pH-pHpHw101010,Kα=−+(2),α,eq/L;pH1pH,pH1=5;pH2pH,7pHPV,pH2=12,;Kw,1.00×10−14.,α≈0.01eq/L.7pHPVE(meq/g).,,(E);;M(g),3.,Q(mL),,pH6,.αE,Q:.EMQα=(3):w,hQkAtL=(4),k(cm/s);AL(cm2)(cm);hw(cm);t(s).(3)(4)t:w.EMLtkAhα=(5):1172t,,pH6,.(5),,.8,No.1No.2No.3:1.0×10−7cm/s5.0×10−7cm/s1.0×10−6cm/s.“”10cm,hw=10cm.(E)(k)(M)(A)(L)(hw)(5),“”8(t),4.4,,.,.,.,,.31)pH6,.2),;,.3).,,,.4E/meq·g−1M/gA/cm2L/cmk/cm·s−1α/eq·L−1hw/cmt/aNo.13.52323.378.343.01.0×10−70.0110138No.22.56261.675.083.05.0×10−70.011017No.33.28203.670.252.951.0×10−60.01109E:2009396117323MenadN,LagerkvistA.