赤子爱胜蚓处理污泥对其性质变化的影响

46环境工程学报Vol.4,No.620106ChineseJournalofEnvironmentalEngineeringJun.2010陈学民王惠伏小勇黄魁(,730070)(Eiseniafoetida),,(pH)()():,07g/d,481/d,,pH783703;046S/m223S/m;4389%5753%;TOC3232%2359%;NPK,NPK3748%1996%2014%;,CuZnCrPb,,X705A16739108(2010)06142105EffectofvermicompostingusingEiseniafoetidaonpropertiesofsewagesludgeChenXueminWangHuiFuXiaoyongHuangKui(InstituteofEnvironmentalandMunicipalEngineering,LanzhouJiaotongUniversity,Lanzhou730070,China)AbstractVermicompostingofsewagesludgeusingEiseniafoetidadirectly,comparedwithnotaddingearthworm,thechangeofearthwormbiomass,physiochemicalproperties(pH,EC,ashandTOC),nutrients(nitrogen,phosphorousandpotassium)andheavymetal(Cu,Zn,PbandCr)insewagesludgewerestudiedduringexperimen.tTheresultssuggestedthatearthwormscouldadaptwelltothelivingenvironmentofdirectaddsludgeduringvermicomposting,andthattheaveragegrowthandreproductionwere07g/dand481cocoon/drespectively.Withincreasedtime,vermicompostingshowedsignificantchangeofchemicalpropertiesandnutrientsandheavymetalconten.tAftervermicomposting,theresultsindicatedsignificantreductioninpHvalue(783to703)andTOC(3232%to2359%),whilesignificantincreaseinEC(046S/mto223S/m)andash(4389%to5753%).Thepercentageofnitrogen,phosphorousandpotassiuminvermicompostwasfoundtosignificantlyincreaseby3748%,1996%and2014%respectively.Atthesametime,earthwormactivityresultedinasignificantdecreaseofheavymetalcontentofsludge.TheorderofearthwormabsorbingtheheavymetalwasCuZnCrPb.Aftervermicomposting,theproductionshowedsmallaggregatetraitsobviously,noodorandmaggots.Keywordsearthworm;sewagesludge;physichemicalproperties;nutrients;heavymetal:(2008ZX07317008);(JK200818):2009-06-03;:2009-06-25:(1960~),,,Emai:[e-mail](),,,,[1],,,,,,,[2](vermicomposting),,,,4[3],,,()[4~12],,,(E.foetida),,,,111(Eiseniafoetida),,,,3~5cm,06g,40%,475mm,,,60%,74%~76%,pH770~790,(EC)042~051S/m,4176%~4602%,TOC2999%~3462%,TN3533~3791g/kg,TP758~783g/kg,TK1110~1135g/kg,Cu18525~23450mg/kg,Zn151500~160825mg/kg,Pb6713~7082mg/kg,Cr10838~13734mg/kg1225cm20cm,,,10cm,100,,48h700g,3,,10d,30d13,,pH:30g10,1h,,pH:50g105,5505h;(GB1189189);NaOH(GB98371988);NaOH(GB98361988);TOC;,IRISIntrepidXSP(ICPAES)(ThermoElemental)14Statistica60,(ANOVA),(LSD),95%221,11Table1Changesinearthwormbiomass()()(g)(g)()(g/d)(/d)110010059.6085.961630.755.43210010055.8077.191360.714.5331009260.5069.991340.654.4710097.3358.6377.711440.704.8114226:1,,5863g7771g,07g,481,,38,,,22,22Table2Variationinphysichemicalpropertiesduringvermicompostingofsewagesludge10d20d30dFpH7.570.04a7.430.06be7.500.03abc7.130.05d7.300.01e7.030.06f50.47***EC(S/m)0.620.03a0.780.02b0.780.02b1.790.06c0.830.03b2.230.08d645.93***(%)45.960.03a48.892.13b47.200.72a51.071.88c49.681.72bc57.532.22d31.91***TOC(%)31.271.52a29.162.31b29.561.23c25.330.83d27.330.70d23.592.22e24.11***(,p005),;***(p0001);**(0001p001);*(001p005);2,pHECTOC(p0001),pHTOC,:,pHTOC,,pHTOC7032359%,EC,:,EC,,EC223S/m5753%pH,CO2Ndegwa[10]pH/,,(,,)[11],,,,,,,,,TOC2701%,TOCCO2,,,TOC[12]23,,,,,[9]33Table3Variationinnutrientsduringvermicompostingofsewagesludge(g/kg)10d20d30dFTN36.871.09a38.500.25abc40.440.50bc43.991.06d40.031.14b50.252.10e50.24***TP7.800.06a7.860.14a8.050.07ac8.510.25b8.310.03bc9.160.52d12.80***TK11.560.20a12.250.39ab11.950.22a12.780.51bcd12.350.30ab13.480.82d6.40**142343,TNTP(p0001);TK(0001p001),TNTPTK10d,2030d,TNTPTK;,TNTPTK50259161348g/kg,,[9],[13],,[14],,,,[15]24,44Table4Variationinheavymetalduringvermicompostingofsewagesludge(mg/kg)10d20d30dFCu202.3818.57a166.5511.07bc203.4923.83a150.086.13cd199.1523.51a136.142.86d9.56***Zn1548.3134.16a1516.9216.07a1553.5032.82a1226.4851.06b1554.5251.42a1102.0079.50c51.24***Pb68.203.18a64.782.19a67.832.37a58.253.43b67.462.13a53.905.73bc9.19***Cr122.797.71a114.1510.48a119.647.66a111.259.88a115.042.74a96.831.70b4.39*4,CuZnPb(p0001);Cr(001p005),Cu;ZnPbCr10d,ZnPb2030d;Cr,,,CuZnPbCr,1361411020053909683mg/kg,,CuZnCrPb,,,COOHNH2CO,[16],Zn(GB428484),Zn,Zn,Zn[17]3(1),,,,(2),,pH,,TOC(3),NPK,(4),,,Zn(5),,,,14246:[1],,,..,2001,7(5):511~515[2],!∀#∃%B.A..,2008,29(4):475~502[3],,,..,2008,16(3):788~793[4]..,2006,6(6):9~12[5],,,..,2007,26(3):343~346[6]ElviraC.,SampedroL.,DominguezJ.,etal.Vermicompostingofwastewatersludgefrompaperpulpindustrywithnitrogenrichmaterials.Soi.lBio.lBiochem.,1997,29(3~4):759~762[7]HartensteinR.,HartensteinF.PhysicochemicalchangesaffectedinactivatedsludgebytheearthwormEiseniafoetida.Environ.Qua.l,1981,10(3):377~382[8]NdegwaP.E.,ThompsonS.A.Integratingcompostingandvermicompostinginthetreatmentandbioconversionofbiosolids.BioresourceTech.,2001,76(2):107~112[9]KhwairakpamM.,BhargavaR.Vermitechnologyforsewagesludgerecycling.Hazard.Mater.,2009,161(2~3):948~954[10]NdegwaP.M.,ThompsonS.A.Effectsofstockingdensityandfeedingrateonvermicompostingofbiosolids.BioresourceTech.,2000,71(1):5~12[11]GuptaR.,GargV.K.Stabilizationofprimarysewagesludgeduringvermicomposting.BioresourceTech.,2008,153(3):1023~1030[12]GuptaR.,MutiyarP.K.,RawatN.K.DevelopmentofawaterhyacinthbasedvermireactorusinganepigeicearthwormE.foetida.BioresourceTech.,2007,98(13