贵州省污水处理厂污泥中重金属形态分布及其潜在生态风险评价文竹

1007-2284201612-0067-07112121．5517002．550025ICP-MSBCＲMn、Cu、Zn、Pb、Cr、Ni、AsCdNemerowIgeo。、8Mn＞Cu＞Zn＞Pb＞Cr＞Ni＞As＞CdMnCuCd。。CuCrPbCdAsZnNiT1、T2、T3、T4T5Ni＞Cu＞Mn＞Cr＞As＞Zn＞Cd＞PbCu、NiPb、Cd。Cr、Ni、As1Cd＞Pb＞Cu＞Mn＞Zn＞Cr＞Ni＞As。EiCd＞Pb＞As＞Ni＞Mn＞Zn＞Cu＞CrCdＲI＞＞＞＞＞＞CuZnCu、Ni、AsZnCrMnPbCd。TV213．4X820X703AFractionationandEnvironmentalAssessmentofHeavyMetalsinSewageSludgefromMunicipalWastewaterTreatmentPlantsofGuizhouProvinceWENZhu1LIJiang12WANGXing1ZHANGQing-qing21．GuizhouUniversityofEngineeringScienceBijie551700GuizhouProvinceChina2．CollegeofＲesourcesandEnvironmentEngineeringGuizhouUniversityGuiyang550025ChinaAbstractOnthebasisoffieldinvestigationandlaboratoryanalysisofmunicipalwastewatertreatmentplantsofGuizhouasurveyofmonito-ringthecontaminationlevelsofheavymetalsi．e．MnCuZnPbCrNiAsandCdbyICP-AESandmodifiedBCＲmethodandtheirpotentialecologicalrisksareevaluatedbyHakansonmethodinsludge．TheresultsindicatethatThephysicalandchemicalpropertiesofsewagesludgehashighorganicmatternitrogenphosphorusandpotassiumwhichisofgreatvalueoflanduse．ThecontentofMnandCuofsewagesludgehasthehighestpercentageoftotalheavymetalsandCdhasthelowestpercentagewhichordersMn＞Cu＞Zn＞Pb＞Cr＞Ni＞As＞Cd．Correlationanalysisshowsthatorganicmatterandtotalnitrogenhavepositivelycorrelatedwithheavymetalsinsewagesludgefrom2016-03-08“”GZ20140230“K052836”。1984-。[e-mail]。1971-、。76·201612municipalwastewatertreatmentplantsofGuizhoup＜0．05whicharethemainfactorsofthedistributionofheavymetals．ThecontentofCuandCrexistsintheformofacidsolublestatewithorganiccombinationPbandCdinwatersolubleformAsandZnaremainlyinoxidationstateandreductionstateNiisevenlydistributedinfivekindsofforms．ItsbiologicalactivitycoefficientordersNi＞Cu＞Mn＞Cr＞As＞Zn＞Cd＞Pb＞CuwhichshowsCuandNihavearelativelyhighinstabilityandavailabilitywhilePbandCdhaveagoodstabilitylowbiologicala-vailability．TheresearchassessesthesludgewithHakansonecologicalriskassessmentmethodandtheresultsshowthattheEirofheavymet-alsinsewagesludgefrommunicipalwastewatertreatmentplantsofGuizhoushowCd＞Pb＞Cu＞Mn＞Zn＞Cr＞Ni＞AsandtheCrNiAsarelowpollutionwiththeEir＜1andEiorderedCd＞Pb＞As＞Ni＞Mn＞Zn＞Cu＞CramongwhichCdisthemosttoxicＲIordersTongren＞Guiy-ang＞Xingyi＞Zunyi＞Kaili＞Liupanshui＞Bijie．CuandZnhavealowerIgeoindexwithlowpollution．ConsideredfromthemeanvalueCuNiAsandZnbelongtothemildpollutionCrandMnbelongtomoderatepollutionPbandCdbelongtothemostseriouspollution．KeywordsGuizhouProvincemunicipalsludgeheavymetalenvironmentalassessment0、、12。2010201028811．23×107t3－520113、29961．33m3/d46。、、78。。、910。7、、、、、21BCＲIgeo、Eir、ＲI。11．120156－9、、、、、73212180%。2kg。。1．21．2．1ICP-MSAgilent7500USACEMBerghofBSB-939-IＲGermanGerman0．0001g100mL。Q=1．42g/mLMilli-QFrance。1．2．2pH1∶2．5pHNaOH－10。1．2．3600．5000g0．0001gHClO4－HNO3－HFICP-MSZn、Cd、Pb、Cu、ICP。0．2500g0．0001g25mL1+110mL2h10mLHg。5．00mL25mL50g/L2．5mL2．5mL25mLAs。ICP-MS2%95%9%337。1112wM=nvcmwmg/kgM86cICP-MSmg/LnICP-MSmkgvL。1．2．4BCＲ13145T1、/T2、T3、T4T5。0．5000g50mL1ICP-AES1BCＲ131T120mL16h200r/min25±1℃4000r/min20min0．45μm10mL4℃。10mL20min。2T220mL0．11mol/LCH3COOH1。3T320mL0．1mol/LNH2OH·HCl0．1mol/LHNO3pH=21。4T45mL8．8mol/LH2O230%1h85℃1h。5mL8．8mol/LH2O21h25mL1H2O2CH3COONH40．1mol/LHNO3pH=21。5T5。。3。1．311415。Pi=Ci/Si1PiCiSii。2N．L．Nemerow15。Pt=Ci/Si2max+Ci/Si2ave/21/22PtCi/SimaxCi/Siave2。214151Pi＜0．7Pt＜0．720．7＜Pi≤10．7＜Pt≤131＜Pi≤21＜Pt≤242＜Pi≤32＜Pt≤35Pi≥3Pt≥33Hakanson16。。Hakanson1980。Ei=Ti·CiCo3EiiTii3Ciimg/kgComg/kg3。3CrCuMnNiPbCdAsZn321752305/mg·kg－1653080240．20．51525ＲIＲI=∑Ei4EiＲIHakanson4。4EiＲI≤40≤15040～80150～30080～160300～600160～320600～1200＞320＞12004Igeo16。、。Igeo=log2Cn/kBn5CnnBnk1．5。22．168965IgeoIgeo＜000≤Igeo＜111≤Igeo＜222≤Igeo＜33－3≤Igeo＜444≤Igeo＜55－Igeo≥56Mn＞Cu＞Zn＞Pb＞Cr＞Ni＞As＞CdMn115．8～653．2mg/kgCu152．7～513．4mg/kgZn75．2～431．7mg/kgPb92．7～245．7mg/kgCr91．3～231．8mg/kgNi43．2～152．7mg/kgAs15．4～53．2mg/kgCd1．5～5．6mg/kg。MnCuCd。ZnZnMnCu、、、。。3。6mg/kgCrCuMnNiPbCdAsZn103．5±23．6241．3±36．5115．8±15．871．4±6．8163．2±23．52．4±0．619．4±5．2115．2±19．8231．8±29．8632．5±69．4653．2±98．3152．7±16．9234．1±36．45．6±1．353．2±9．8563．2±68．9115．7±16．5152．7±25．7263．5±62．595．3±5．8123．5±24．11．5±0．215．4±3．296．3±23．4221．4±24．8513．4±85．4541．3±32．570．2±6．8245．7±45．74．3±1．941．3±7．4431．7±56．779．2±9．5169．5±53．2345．2±68．763．5±9．392．7±8．53．7±1．323．1±2．184．2±12．391．3±6．8256．7±26．9314．7±58．243．2±15．2145．7±13．53．1±0．716．8±4．375．2±5．8105．7±13．4185．4±35．4233．6±49．356．7±11．4168．7±26．73．4±1．524．5±6．598．3±9．4135．5±18．2307．4±48．7352．5±35．479．0±23．7167．7±18．93．4±1．127．7±8．7209．2±35．114151854867477．51312．97751450p＜0．05。《》GB18918-20026Pb、Ni、MnCdCr、CuMn、、、PbCdAsZn。2．2《》CJ/T221-2005pHww、ww7pH5．3～6．35．8《》CJ/T309-2009《》CJ/T309-2009、。8pHCu、Ni、PbZnp＜0．01Cr、MnAsp＜0．05Nip＜0．017pH/g·kg－16．1±0．341．3±3．22．8±0．60．6±0．11．7±0．55．3±0．456．3±1．64．3±0．81．9±0．35．3±0．95．7±0．235．7±2．53．6±0．41．1±0．22．1±0．55．4±0．362．4±2．64．1±0．51．8±0．56．1±0．66．0±0．252．7±3．43．2±0．80．9±0．32．5±0．35．8±0．349．2±2．83．7±0．70．7±0．41．9±0．46．3±0．332．7±2．12．3±0．60．9±0．63．4±0．85．8±0．347．2±2．63．4±0．61．1±0．53．3±0．914155．5～9．044．22．71．46．9p＞0．05CrNip＜0．05。。078CrCuMnNiPbCdAsZnpH－0．798*－0．856＊＊－0．912＊＊－0．589－0．981＊＊－0．542－0．662*－0．863＊＊0．653*0．899＊＊0．756*0．874＊＊0．9