含重金属污泥制砖毒性的浸出张瑜

94Vol．9No．420154ChineseJournalofEnvironmentalEngineeringApr．201512322442*1．3100582．3100273．3100074．311200。。Cu、Cr、AsPbZnCr、CuPbZnAspH。X705A1673-9108201504-1984-05ToxicityleachingofbrickmakingfromsludgecontainingheavymetalsZhangYu1TaoMengna2ShenDiqing3ZhengShudong2HeYi2YingGuoqing3YingJianwei3ShiYao21．CollegeofEnvironmentalandＲesourceSciencesZhejiangUniversityHangzhou310058China2．DepartmentofChemicalandBiologicalEngineeringZhejiangUniversityHangzhou310027China3．EnvironmentalEngineeringTechnologyAssessmentCenterofZhejiangEnvironmentalProtectionBureauHangzhou310007China4．ZheJiangJiefengEnvironmentalTechnologyEngineeringlimitedcompanyHangzhou311200ChinaAbstractTheproblemsofheavymetalinsludgefromsewagetreatmentplantshasattractedmuchatten-tions．Oneproposaltoreducetheharmofheavymetalswastomakebrickwhichcansolidifythemduringthesin-teringprocess．Thesewagesludgewasmixedwithshaleaccordingtoacertainproportiontopreparebrickthenthesolidifiedeffectofheavymetalsaswellasthetoxicityextractionwerestudiedtoexaminethesafetyofsinteredbrick．TheresultsshowedthattheleachingconcentrationsofCrCuAsPbhardlychangedwithtimeunderneu-tralandacidicconditionswhilethatofZnwasrelativelyhighfirstlythenreduced．Moreoverunderalkalinecon-ditionstheleachingconcentrationsofCrCuPbstayedstablewhereasthatofZnAschangedirregularly．Over-alltheperformanceofstabilization/solidificationforCrCuZnAsPbiswell-behavedandtheleachatetoxicityofsludgebricksislowerthanthatofthenationalstandard．Keywordsheavymetalssludgemakingbrickleaching2014－03－082014－06－191987—。[e-mail]*[e-mail]。201080%3000t“”6000t20%。、1-3。、、4-7。、、4。SiO2、CaO、Al2O3Fe2O38-10。。1112。。11．180%35%800．3g10mLHNO3、10mLHCl5mLHClO4100℃1h250℃5mLHNO3、5mLHCl2．5mLHClO4250℃l0mL1∶1HNO350mL。ICP—MSCr、Cu、Zn、AsPb5。1．2《GB13544-2011》131。80%35%43．4%72h240mm×115mm×90mm3．8kg1．65kg。24h。1130℃48h。1．3《HJ557—2010》14、pH4pH121∶10。24、48、7296h10mL。ICP—MSCr、Cu、Zn、As、Pb5。1Fig．1Brickmakingprocessforsludgeshale5891922．1Cr、Cu、Zn、AsPb1。ZnCuPbAsCr。ZnCu＞Pb＞As＞Cr。Pb36．4%PbAs2．8ZnCr40%67%Cu。1Table1Concentrationsofmainheavymetalsinsludgemg/kgCrCuZnAsPb34．267214．58101037．75181．8357．28203．51420106．58115．5《GB4284-24》15《GB18918-2002》16542.1%。2．22．2．12。96hCr、Pb、Cu、AsCrPb1μg/LAsCu。Zn48h72h120μg/L。2．2．23。96hCr、AsPbCu42Fig．2Ｒelationshipbetweenconcentrationofheavymetalsandtimeunderneutralcondition3Fig．3ＲelationshipbetweenconcentrationofheavymetalsandtimeunderconditionofacidZn24h358μg/L1724hZn。2．2．34。496hCr、CuPbZnAsZnAs20μg/LCu、CrPb5μg/L。2CuZnCr、AsPb。1719689144Fig．4ＲelationshipbetweenconcentrationofheavymetalsandtimeunderalkalineconditionCrPbPbOH3－、PbOH42－As。2pHTable2MaximumleachingconcentrationofheavymetalatdifferentpHmg/LCuZnCrAsPbHClpH=40．017540．35750．000240．0060．00064H2O0．009180．120．000280．013790．00096NaOHpH=120．002990．021930．001690．020680．00586GB3838-88181．01．00．050．050．05、《GB3838-88》18III。。。31pH。Cu、Cr、AsPbZnCr、CuPbZnAs。2pHCuZnCr、AsPb。343．4%、Cr、Cu、Zn、AsPb《GB3838-88》17III。1．．2001203186-189CaiQuanyingMoCehuiWuQitangetal．Variationofor-ganicpollutantsintreatmentofsewagesludgeduringcom-posting．Aro-environmentalProtection2001203186-189inChinese2．．200224452-5356XueLianhaiHeJianzhong．Studyonthesecondpollutionofactivesludge．ChongqingEnvironmentalScience200224452-5356inChinese3．II．2002246353-354367HeJianzhongXueLianhai．StudyonthesecondpollutionofactivesludgeII．EnvironmentalPollutionandControl2002246353-354367inChinese4．．2008241420-424YangLibiaoZouGuoyuanZhangLijuanetal．Progressinresearchonagriculturalapplicationofsewagesludge．Chi-neseAgriculturalScienceBulletin2008241420-424inChinese5．．2005211198-201282ZouShaowenZhaShuqingWangYujunetal．CharacteranddisposalofmunicipalsludgeanditsprospectofusingonfarmlandandforestlandinChina．ChineseAgheultoralSeicnceBulletin2005211198-201282inChinese6．．2006254375-378ChenSuSunLinaSunTiehengetal．Thedisposaltech-niqueandcomprehensiveutilizationofmunicipalsludge．78919EcologicScience2006254375-378inChinese7WangWeiLuoYuxiangQiaoWei．PossiblesolutionsforsludgedewateringinChina．FrontiersofEnvironmentalSci-ence＆EngineeringinChina201041102-1078DonatelloS．TongD．CheesemanC．Ｒ．ProductionoftechnicalgradephosphoricacidfromincineratorsewagesludgeashISSA．WasteManage．2010308-91634-16429MattenbergerH．FraisslerG．JllerM．etal．SewagesludgeashtophosphorusfertiliserIIInfluencesofashandgranulatetypeonheavymetalremoval．WasteMan-age．2010308-91622-163310PaiT．Y．LinK．L．ShieJ．L．etal．Predictingtheco-meltingtemperaturesofmunicipalsolidwasteincineratorflyashandsewagesludgeashusinggreymodelandneuralnetwork．WasteManagement＆Ｒesearch2011293284-29311．．2012631035-1038MaWenHuShibin．Applicationofmunicipalsewagesludgeintheprocessofsinteringbrick．ChineseJournalofEnvironmentalEngineering2012631035-1038inChinese12．．201038101963-1968LinZizengSunKeqin．Preparationofcommonclaybrickbysewagesludgeasthepartialrawmaterial．JournaloftheChineseCeramicSociety201038101963-1968inChinese13．GB13544-2011．201214．HJ557-2010．201015．GB4284-84．198416．GB18918-2002．200217．．2010334130-132145ZhangHaiyingZhaoYoucaiZhangGuoxinetal．Leac-hingbehaviorofheavymetalsfromMSWIfly