金属酸洗废液处理实验研究本科论文.doc

***本科毕业论文***大学毕业论文作者：学号：系：专业：环境工程题目：金属酸洗废液处理实验研究指导者：(姓名)(专业技术职务)评阅者：(姓名)(专业技术职务)20**年*月*日毕业论文中文摘要金属酸洗废液处理实验研究摘要：金属酸洗废液主要来源于冶金、机械等行业的清洗或腐蚀处理过程,即将工件（主要是金属如钢、合金等）用盐酸等强酸清洗表面，为后续工艺做前期处理。通常含酸废液pH很低，有时甚至小于1，其属于强酸性危险废物。如果通过中和排放处理则需要消耗大量的碱，而且成本较高。如果对其进行妥善的综合处理利用,不仅会减少其对环境的污染,而且还可以使资源得到更充分的利用，达到节能环保的效果。本课题通过对国内外酸洗废水处理技术进行调研、分类、分析和实验研究，对不同浓度的酸洗废水进行技术、经济两方面的分析和评价，最后结合水样的化学成分提出利用酸洗废液和废铁屑等合成聚合氯化铁铝絮凝剂综合利用的方案。关键词：酸洗废液技术调研实验研究综合利用毕业论文外文摘要TitleExperimentalstudyofmetalpicklingliquidtreatmentAbstractMetalpicklingliquidstemsfromthemetallurgy,machineryandotherindustriescleanorcorrosiontreatmentprocess,aimedforcleaningthesurfaceoftheworkpiece(mainlymetals,suchassteel,alloy,etc.)withhydrochloricacidorstrongacidforthefollow-upprocesstopreviousprocessing.UsuallythepHofthoseliquidislowbecauseoftheacidtheycontains,sometimesevenlessthanone,thismakesthoseliquidbelongtostronglyacidicdangerouspollutants.Ifthroughneutralizationemissionstreatmentwouldneedtoconsumelargeamountsofalkali,andthecostishigher.Ifwetreatitthroughthecomprehensivetreatmentandutilizationtechnology,itwillnotonlyreducethepollutiontotheenvironment,butstillcanmakefulluseofresources,achievetheeffectofsavingenergyandenvironmentalprotection.Aftertheresearchofpicklingwastewatertreatmenttechnologythroughdomesticandabroad,wemakeclassification,analysisandexperimentalresearch,toanalysisandevaluatedifferentconcentrationsofpicklingwastewaterinaspectsoftechnologyandeconomy,andfinallyputforwardtreatmentandcomprehensiveutilizationoftheoptimalschemecombinedwiththechemicalcompositionofpicklingliquid.Keywords：picklingliquidtechnologyresearchexperimentalstudycomprehensiveutilization目次TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc295071587"1引言PAGEREF_Toc295071587\h1HYPERLINK\l"_Toc295071588"1．1直接焙烧法PAGEREF_Toc295071588\h1HYPERLINK\l"_Toc295071589"1．2蒸发法PAGEREF_Toc295071589\h1HYPERLINK\l"_Toc295071590"1.2.1蒸发冷冻结晶法PAGEREF_Toc295071590\h1HYPERLINK\l"_Toc295071591"1.2.1蒸发冷凝法PAGEREF_Toc295071591\h2HYPERLINK\l"_Toc295071592"1．3膜分离法PAG