*江西省重点研发计划项目(编号:20212BBG73013)。黄家新(1985—),男,高级工程师,硕士,330006江西省南昌市。通信作者薛锦春(1969—),男,教授,博士,330006江西省南昌市。城门山铜矿尾矿库酸性废水处理试验*黄家新1,2薛锦春1王伟伟3(1.江西理工大学能源与机械工程学院;2.江西铜业股份有限公司城门山铜矿;3.中国矿业大学(北京)化学与环境工程学院)摘要为解决城门山铜矿刘家沟尾矿库酸性废水的处理问题,对该尾矿库的选矿废水进行初步检测分析后,开展了尾矿库废水pH调节试验,测定了pH值调节至6、7、8、9对应的品位为75%的生石灰消耗量、沉淀物沉降速率、底泥量、底泥主要成分等指标。结果表明,尾矿库废水pH值调节至6~9,每天需消耗品位为75%的生石灰0.573~2.229t,每天产生底泥湿质量和干质量分别为226.28~362.85t、7.58~11.32t,底泥主要由铁、铝、铜、钙、钠、硅的氧化物组成,尾矿库废水pH在6~9时产生的底泥Fe2O3含量最高。关键词硫化铜矿酸性废水酸碱中和法pH调节DOI:10.3969/j.issn.1674-6082.2023.08.047AcidicWastewaterTreatmentTestofTailingsReservoirinChengmenshanCopperMineHUANGJiaxin1,2XUEJinchun1WANGWeiwei3(1.SchoolofEnergyandMechanicalEngineering,JiangxiUniversityofScienceandTechnology;2.ChengmenshanCopperMine,JiangxiCopperCorporationLimited;3.SchoolofChemical&EnvironmentalEngineering,ChinaUniversityofMining&Technology,Beijing)AbstractInordertosolvetheproblemofacidwastewatertreatmentinLiujiagoutailingsreservoirofChengmenshanCopperMine,afterthepreliminarydetectionandanalysisofthebeneficiationwastewaterofthetailingsreservoir,thepHadjustmenttestofthetailingsreservoirwastewaterwascarriedout.WhenthepHvaluewasadjustedto6,7,8and9,thecorrespondingconsumptionofquicklimewithgradeof75%,thesedimentationrateofsediment,theamountofsedimentandthemaincomponentsofsedimentweremea⁃sured.TheresultsshowedthatwhenthepHvalueofthetailingsreservoirwastewaterwasadjustedto6~9,0.573~2.229tofquicklimewithgradeof75%wasconsumedeveryday,andthewetweightanddryweightofthebottommudproducedeverydaywere226.28~362.85tand7.58~11.32t,respectively.Thebottomsedimentsaremainlyoxidesofiron,aluminum,copper,calcium,sodiuman...