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1、PCB下载站资料整理www.pcbdown.com摘要电镀是当今全球三大污染工业之一。电镀废水的成分常常是同时含有多种污染物，其中有毒有害的物质有铬、镍、氰化物、铜等。本设计中废水进水水量水质为：含氰废水Q=8m3/d，平均每小时排放量1.0m3，氰化物浓度为1.03-8.5mg/L，其废水中还含有OH-和少量Cu2+离子；含铬废水Q=8m3/d，平均每小时排放量1.0m3，六价铬浓度为6.08-12.1mg/L，其废水中还含有H+离子；综合废水Q=4m3/d，平均每小时排放量0.5m3，pH=6.
2、5-7.9，其废水中含有H+、OH-和少量的Cu2+和Ni2+离子。综合该厂的废水水质水量特点，决定按照“分类收集、分类处理”的原则，采用“化学法+一步净化器”的“间歇式”处理方法，并在固液分离后调节废水pH值，以保证达到排放标准。本处理站的总投资为41.58万元，年运行费用为5.54万元，处理单位水量的成本为7.6元/m3。经处理后可使电镀废水达标排放，同时具有良好的社会效益和环境效益。关键词：电镀废水；化学法；一步净化器；间歇式；小流量PCB下载站资料整理www.pcbdown.comIIPCB
3、下载站资料整理www.pcbdown.comTheprojectdesignforelectroplatingwastewateroftheGuilin5718factoryStudent:RENShi-biaoTeacher:ZHUYi-nianAbstract：Electroplatingindustryisoneofthethreeseriouspollutingindustryintheworld.Therearemanykindsofpollutantsintheelectroplatin
4、gwastewater,containingthetoxicandharmfulsubstances,suchasCr6+,Ni2+,CN-,Cu2+etc.Inthisdesign,thequantityandtheeffluent-qualityofthewastewaterareasfollows.Wastewatercontainingcyanide:8m3/dor1.0m3/h,[CN-]=（1.03-8.5）mg/L,withasmallnumberofCu2+andOH-init;Wa
5、stewatercontainingchromium:Q=8m3/dor1.0m3/h,[Cr6+]=（6.08-12.1）mg/L,withasmallnumberofH+init;Integratedwastewater:Q=4m3/dor0.5m3/h,pH=6.5-7.9,withsomeH+/OH-andasmallnumberofCu2+andNi2+init.Consideringthewastewaterqualityandquantitycharacteristics,thedes
6、ignchoosestheintermittent“chemicaltreatment+steppurifier”asthetreatmentofthewastewaterinaccordancewiththeprincipleofcollecting&treatingseparately.Andafterthesolid-liquidseparationadjustthepHvalueofwastewatertoensurethatemissionstandard.Theeffluentwilla
7、ccordwiththenationalfirstambienteffluentqualitystandardofthefirstandthesecondpolluents.Theoverallcostoftheplantis415,800yuan,andtheoperatingchargeisabout55,400yuanperyear.Thecostofthistreatmentisabout7.6yuan/m3.Theresultofthistreatmentwillaccordtotheef
8、fluent-qualitystandard,andithasagoodsocialandenvironmentalbenefits.Keywords：electroplatingwastewater；chemicaltreatment；steppurifier；intermittently；smallflowPCB下载站资料整理www.pcbdown.comIIPCB下载站资料整理www.pcbdown.com目次摘要IAbstractII1引言11.1电镀与电镀废
