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武汉纺织大学毕业设计（论文）说明书课题名称：昆山垃圾发电厂污水站设计完成期限：2009年12月30日至2010年5月28日院系名称环境与城建学院指导教师张跃武专业班级0621指导教师职称工程师学生姓名熊幸院系毕业设计（论文）工作领导小组组长签字摘要：垃圾渗滤液的处理，在目前对于绝大多数的垃圾填埋场及污水厂来说，都是个棘手的问题。与普通的市政污水相比，垃圾渗滤液的产量虽然少，但是其污染物种类复杂，且浓度相当高，COD常超过40000mg/L。对于这类污染物浓度极高的有机废水，仅靠单一的厌氧或好氧法无法得到理想的效果，甚至会使反应单元无法正常运转。本次设计针对昆山垃圾发电厂的渗滤液进行，污水处理站所采用的为目前比较主流的厌氧后接好氧工艺来处理垃圾渗滤液。厌氧反应器采用升流式厌氧污泥床UASB（Up-flowAnaerobicSludgeBed），该工艺具有较高的有机物负荷能力，在进水COD浓度很高的情况下也能正常进行消化反应，但其出水的COD比较高，同时氨氮含量也相当大，不能直接排放，需要增设好氧反应单元，进一步降低出水COD并除去氨氮。好氧系统采用膜-生物反应器MBR（MembraneBio-Reactor），该工艺是一种由膜分离单元与生物处理单元相结合的新型水处理技术。污水经过MBR反应器后水质可达到3级排放标准，然后排入市政污水处理厂做进一步的处理。关键词：渗滤液；膜生物；上流式流化床；高浓度；消化ABSTRACTLandfillleachatetreatmentisathornyissueformostofthesewagetreatmentplantandthelandfillinthepresent.Comparedwithordinarymunicipalsewage,althoughlessleachateproduction,butthetypesofpollutantscomplex,andhighconcentrations,CODoftenmorethan40000mg/L!Forsuchahighconcentrationoforganicpollutantsinwastewater,onlybyasingleanaerobicprocessoraerobicprocesscannotgetthedesiredresults,eventhereactionunitwillnotfunctionproperly.ThisdesignisfortheleachatetreatmentofKunshanpowerplant.Thesewagetreatmentplantusedusedfortherelativelymainstreamanaerobicfollowedbyaerobicprocesstodealwithleachate.AnaerobicreactionprocessusingtheUp-flowAnaerobicSludgeBed(UASB),theprocesshasahighorganicloadcapacitythatabletodigestanormalreactionunderahighinfluentCODconcentration.ButtheeffluentCODisrelativelyhigh,whilenitrogencontentisquitelarge,cannotbedirectlydischarged,needforadditionalaerobicreactor,andfurtherreducetheeffluentCODandammonianitrogenremoval.Aerobicsystemusesmembrane-bioreactorMBR(MembraneBio-Reactor),theprocessisuseofmembraneseparationunitandbiologicalunitinthecombinationofanewwatertreatmenttechnology.MBRreactoreffluentwaterqualityreachthethirdlevelofemissionstandards,andthendischargedintomunicipalsewagetreatmentplantforfurtherprocessing.Keywords：leachate；MBR；UASB；highconcentration；anaerobicdigestion目录第1章概述.....................................................................................11.1引言....................................................................................................11.2背景资料：........................................................................................11.2.1填埋场渗滤液水质特征.............................................................11.2.2焚烧发电厂渗滤液水质特征......................................................21.3工艺路线选择...................................................................................41.3.1MBR工艺选择............................................................................41.3.2预处理工艺选择.........................................................................7第2章UASB对焚烧厂垃圾渗滤液的处理效果..............................92.1UASB工艺概述.................................................................................92.2UASB反应器处理效果..................................................................10第3章MBR对垃圾渗滤液处理效果..............................................123.1MBR工艺原理概述.....................................................................123.1.1硝化............................................................................................123.1.2前置反硝化................................................................................133.1.3超滤............................................................................................143.2试验结果及分析.............................................................................153.2.1溶解氧浓度变化对去除效果的影响........................................153.2.2污泥负荷对去除效果的影响...................................................213.2.3UF过滤性能的研究..................................................................233.3结论.................................................................................................25第4章技术方案.............................................................................274.1基本技术要求..................................................................................274.1.1总体要求....................................................................................274.1.2原水水质....................................................................................274.1.3出水排放标准............................................................................274.2项目边界条件.................................................................................274.2.1场地...........................................................................................274.2.2供电...........................................................................................284.2.3给水及排水...............................................................................284.2.4蒸汽............................................................................................284.2.5通讯...........................................................................................284.2.6臭气...........................................................................................284.3工艺设计计算：.............................................................................284.3.1处理单元确定：........................................................