毕业论文单质铁、离子交换树脂联合处理化学化工实验室废水的研究

I单质铁、离子交换树脂联合处理化学化工实验室废水的研究摘要：通过调查、采样分析化工实验大楼的实验室废水中COD以及镉、铬、锌、铜、铅等各种金属离子的污染程度。研究单质铁、离子交换树脂联合处理后的废水中的COD和重金属离子的去除情况。结果表明，铁屑投加量在20g/L—50g/L阶段时，COD的去除效果最好,去除率为91.76%。在Fe加入量为35g/L—45g/L之间时，废水中的COD均达到排放标准。且Fe加入量为35g/L时处理效果最好,去除率为94.26%。即铁屑的最佳投药量为35g/L。各重金属离子的浓度随着树脂投加量的增加而降低，当树脂量达到100g/L以后，出水中的重金属离子浓度全部达到国家一级排放标准。鉴于节省处理费用，树脂的最佳投药量为100g/L。当流速在2.0mL/min以内时较好的处理效果,铅离子浓度0.1mg/L,铜离子浓度0.5mg/L,镉离子浓度0.01mg/L,铬离子浓度0.1mg/L,锌离子浓度1mg/L达到国家一级排放标准。所以本实验处理流速控制为2.0mL/min，出水中各重金属离子浓度都可以达到国家《污水综合排放标准》GB8978-2002一级标准。关键词:化学实验室废水；单质铁；离子交换Elementaliron,ionexchangeresincombinationofwastewatertreatmentchemicalchemistrylabLiuWeiguo(Watersupplyanddrainage0601,SchoolofEnvironmentalandBiologicalEngineering)IIAbstract:ThroughtheinvestigationandanalysisofchemicalexperimentofsamplinginlaboratorybuildingwastewaterCODandcadmium,chromium,zinc,copper,lead,etcallkindsofmetalionsandpollutiondegree.Elementalresearch,ionexchangeresinwastewatertreatmentincombinationofCODandheavymetalionsremoval.Resultsshowthattheoptimumdosingquantityin20g/L-50g/L,CODremovalefficiency91.76%forthebesteffect.Feinadditionof35g/L/L45g-betweentheCOD,wastewaterdischargestandardsarereached.Feandto35g/Ltreatmentforthebesteffect,94.26%removal.Thebestmedicineiscastironfor35g/L.Theheavymetalionconcentrationwithresindosingquantityincreases,whentheresincontent,thewaterreaches100g/Lafterheavymetalionconcentrationofallnationallevelofemissionsstandards.Duetocostsavings,resinforthebestdrugis100gold/L.Whenthevelocityin2.0mL/minwithinthetreatmenteffect,whilegoodleadionsconcentration0.1mg/L,copperionsconcentration0.5mg/L,cadmiumionsconcentration0.01mg/L,chromiumionconcentration0.1mg/L,zincconcentration1mg/Lreachesthenationallevelemissionstandard.Sotheexperimentaltreatmentfor2.0mL/flowcontrol,theheavywaterminconcentrationcanachievenationalintegratedwastewaterdischargestandardofGB8978-2002levelstandard.Keywords:ChemistrylaboratorywastewaterenvironmentpollutionIonexchangeI目录摘要..........................................................................................................................IAbstract................................................................................................................II第1章绪论......................................................................................................-1-1.1引言......................................................................................................-1-1.2化学实验室废水的产生......................................................................-1-1.3化学实验室废水的组成及含量..........................................................-1-1.4化学实验室废水的排放标准..............................................................-2-1.5化学实验室废水的危害......................................................................-2-1.6研究的目的及意义..............................................................................-2-第2章国内外研究现状................................................................................-4-2.1化学实验室废水排放的现状..............................................................-4-2.2化学实验室废水处理..........................................................................-4-2.2.1活性炭吸附法........................................................................-5-2.2.2絮凝沉淀法..............................................................................-6-2.2.3硫化物沉淀法...........................................................................-6-2.2.4高浓度有机废水处理方法......................................................-6-2.2.5含病原微生物废水处理...........................................................-6-2.2.6可渗透反应墙..........................................................................-7-2.2.7氧化还原沉淀法......................................................................-7-2.2.8综合处理法..............................................................................-8-2.3PRB的研究进展...................................................................................-9-2.3.1PRB的最新进展........................................................................-9-2.3.2PRB去除有机物.......................................................................-9-2.3.3PRB去除重金属.....................................................................-10-第3章实验方案..........................................................................................-11-3.1实验路线............................................................................................-11-3.1.1实验调查.................................................................................-11-3.1.2原水水样采集及分析.............................................................-11-3.1.3实验条件的确定.....................................................................-11-3.2实验原理............................................................................................-11-3.3实验药品.........................................................................................-15-3.4实验方法............................................................................................-16-II第四章实验结果与讨论..................................................................................-18-4.1铁屑投加量对COD