沉淀浮选法处理电镀废水的试验研究戴文灿

··20095··········、、、、。Cr6+、Ni2+、Zn2+、Cu2+、Cd2+。、、、、Cr6+、、、。。1、2、3、4、5。。。。402070GrevesSomasundaram67Cu2+、Pb2+、Zn2+898%9Cu2+、Ni2+Cu2+Ni2+。。11.120%~25％、、60%~75％5%~8％。。、2.5∶10∶11。510006、、《》GB21900-2008。、、14.2%、10.3%、8.2%。TD923TD926.5A1671-9492200905-0017-042009-05-201970-。1Table1Thetestresultsoftheelectroplatingwastewatermg/LpH10.23.23.84.56～96~9Zn2+0.0136.01.026.81.51.0Cu2+0.0278.03.257.90.50.3Ni2+0.0150.21.937.60.50.1Cr3+20.190.320.178.61.00.5Fe2+149.23.21.029.33.02.0120.61.01.024.33.02.0CODCr600361200223805017··20095··········1.2、、PAM、、、。1.3、pHS-29A、GD10L、Z-8000、CODCr、721、TJ270-30A。1.41.4.150L1%30sec3min、、、24h。Me2++2OH-=MeOH2↓Me2++S2-=MeS↓1.4.2GD10L。1.5CODCrGB/T11914-1989GB/T16488-1996。22.12.1.1pH2。pHCu2+pH8.5~9.5Cr3+pH8~9。pHCuOH2OH-pH11pH9.5。CODCr。2.1.2pH9.5GD10LSDS3。20mg/L40mg/LZn2+、Cr3+、Ni2+、Cu2+2mg/L。。2.22.2.1pHpH7.5~8.5。pH8.020mg/L/4。1.6Me2+S2-MeS。2。2.2.21.62pHTable2TheeffectofthepHontheconcentrationofthepollutantsmg/LpH8.09.09.510.010.511.0Zn2+10.50.50.10.050.080.10Cu2+5.50.50.090.150.200.10Ni2+3.51.50.20.050.060.20Cr3+4.00.80.30.050.150.6Fe2+10.61.20.50.060.060.2023.020.020.520.020.020.0CODCr1861851871801831833Table3Theeffectofthedosageoftheflotationcollectorusedattheneutralizingprecipitationontheconcentrationoftheheavymetalsinthewastewatermg/L1015202530405.33.42.22.02.01.94.03.52.01.92.02.0Zn2+Cu2+Ni2+Cr3+Fe2+CODCr3.62.82.02.02.62.03.82.62.12.02.02.13.52.82.22.01.91.98.05.03.02.52.02.0128966248464618··20095··········GD10L5。520mg/L0.5mg/L40mg/L。。。2.3Cu2＋Cu2+。Cu2+Cu2+。Cu2+。。1.620mg/LCuSO46。6Cu2+7.5mg/LCu2+7.5mg/L。Cu2+Cu2+CuSO4。31。。2Cu2+。Cu2+CuSO4。3。CODCr、。4。20mg/L0.5mg/L《》GB21900-2008。4Table4Theeffectofthedosageofthevulcanizingagentontheconcentrationoftheheavymetalsinthewastewatermg/L1.01.21.41.61.82.0Zn2+0.80.30.10.020.010.010.50.30.020.020.020.01Cu2+Ni2+Cr3+Fe2+CODCr0.90.50.10.060.030.011.00.80.10.060.030.011.31.00.30.050.030.0224.022.021.521.021.020.01821801831761811805Table5Theeffectofthedosageofthecollectorusedatthesulfuratedprecipitationontheconcentrationoftheheavymetalsinthewastewatermg/L1015202530402.01.00.60.50.30.22.01.10.50.40.30.2Zn2+Cu2+Ni2+Cr3+Fe2+CODCr1.51.00.50.40.40.31.30.90.60.30.30.32.00.50.80.50.40.38.55.03.02.52.22.012091604742466Cu2+Table6TheeffectofthedosageoftheactivatingagentCu2+ontheconcentrationoftheheavymetalsinthewastewatermg/L02.55.07.510.012.5Cu2+Zn2+2.01.00.60.30.30.21.51.00.50.40.40.3Ni2+Cr3+Fe2+CODCr1.30.90.60.30.30.32.00.50.80.50.40.38.55.03.02.52.22.0120916047424619··20095··········1.J.200632814-17．2.J.2002438-41．3.CdIIPbIIJ.2003264-5234.J.200519223-26．5.-J.2008101945-1950.6SomasundaraD.Separationusingfoamingtechniques.Sep.Sci19751093-109.7.J.2003548-50．8.J.2005628-30．9.J.1997233175-177．EXPERIMENTALSTUDYONUSINGPRECIPITATIONFLOTATIONPROCESSTOTREATELECTROPLATINGWASTEWATERDAIWencanSUNShuiyuCHENTaoFacultyofEnvironmentalEngineeringGuangdongUniversityofTechnologyGuangzhou510006ChinaABSTRACTTheremovalofheavymetalionscontainedintheelectroplatingwastewaterbyprecipitationflotationwasstudied.ExperimentalresultsshowhighremovalefficiencyofantimonycoppernickelandotherheavymetalsresultsalsoshowsthatallthewaterqualityindexeswereuptothefirstgradeofwastewaterdischargestandardGB21900-2008.Theconcentrationofthechromiumcopperandnickelinthefoamproductwere14.2%10.3%and8.2%whichhadgreatvalueforresourcesreclamation.KeywordswastewaterprecipitationflotationheavymetalionsresourcesreclamationPRODUCTEDPRACTICEOFDESLIMINGINTHEFLOATATIONOFREFRACTORYOXIDISEDZINCOREWANGhongjuLIUquanjunHUANGFUMingzhuDENGJiushuaiFacultyofLandResourceEngineeringKunmingUniversityofScienceandTechnologyKunming650093ChinaABSTRACTTheoxidisedleadorehasaveryfinediseminationandcontainsverymuchslime.Theslimeneedtoberemovedbeforethebeginningofmineraldressinginordertoeliminatethebadeffectonconcentrateoperation.Theapplicationoftwo-stagedeslimingoperationbycycloneismainlyintroductedinthepapertodealtwiththerefractoryoxidedleadoreduringindustialtestsinlanping.Itisknownthatthedeslimingtechniqueoftwo-stageclosecircuitsisofgreatimportancetostablizeprocessingoperationandenhancethequantityofconcentrate.Keywordscyclonetwo-stageclosecircuitsclassificationdesliming!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1320