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黑龙江大学本科生毕业论文论文题目：辽宁省锦州市凌河区污水处理厂设计学院：化学化工与材料学院年级：2004级专业：环境科学姓徐厚伟名：学号：20040830指导教师：朱琦2008年5月28日摘要水是不可替代的自然资源，在经济建设﹑社会发展和人民生活占有及其重要的地位。随着经济建设﹑城乡建设的发展和人口的增加，用水持续增长，水的供需矛盾日益突出。由于大量的工业废水和生活污水排入水体，使水环境受到严重的`污染，水资源短缺和水质恶化已成为制约经济建设和城乡发展、破坏生态环境、影响人民生活和自身健康的突出问题。建设节约型社会，促进可持续发展，这是辽宁省“十一五”规划编制的重点工作之一。加快恢复辽西植被，提高全省森林覆盖率。深化工业污染防治，加强水污染和大气污染的整治，确保让广大人民群众喝上干净水、呼吸上清洁空气。锦州市凌河区在规划编制中，提到了城区绿化覆盖率达到40%；城市生活垃圾无害化处理率和污水集中处理率分别达到100%和70%。因此本设计根据凌河区的污水水质水量，水文条件，气象人文等信息以及经济等情况决定以CASS法为主要处理单元的方案。力求在处理达标的前提下做到最经济。关键词污水处理厂；污水集中处理率；污水水质水量；CASS法AbstractWateristhenaturalresourcewhichcan’tbesubstituted,Itisintheveryimportantstatusintheconstructionofeconomy、thedevelopmentofsocietyandthelifeofpeople.Withthedevelopmentofconstrctionofeconomy、theconstructionofcontrysideandtheincreaseofpopulation,thewaterusedgrowscontinually,thecontradictoryofsupplyanddemandofwaterisprominentdaybyday.Asalotofindustrialwastewaterandsanitarysewagedisperseintowater,thewaterenvironmentwaspollutedseriously.theshortofthewaterresourceandtheworseofthewaterqualityhasrestrictedthedevelopmentofcityandthedevelopmentofcountryside,thedestructionofecologicalenvironment,whichaffectthelivesofthepeopleandtheprominentquestionofthehealthofourselies.Constructingthesavesociety,promotingthesustainabledevelopment,thisisthekeyworkintheplanofelevenfiveofLiaoningProvince.promoterestoresthevegetationofLiaoxi,deepenedthepreventingandcontrollingoftheindustrypollution,putthewaterpollutionandtheairpollutionundercontrol.makesurethatmanypeoplecandrinkcleanwater,breaththecleanair.Intheplanofthedistrictoflingheofjinzhou,mentionedthecityafforestationcoveragefractionachieves40%,Thelifetrashofthecitydetoxificationprocessingratioandthesewagecentralismprocessingratioachieves100%and70%.Somydesignactsaccordtothewastewaterwaterqualityandwatervolume,hydrologycondition,meteorologicalhumanitiesetc.IdecidedtousetheprojectthattakeCASSprocessasthemainprocessingunit.Iwilltakeallmyefforttomakeiteconomicalundermeetingthestandardofprocessing.Keywordssewagecentralismprocessingratio;CASSprocess;wastewaterwaterqualityandwatervolume;wastewatertreatmentplant目录摘要..........................................................................................................................................ⅠABSTRACT...................................................................................................................................Ⅱ第一章前言............................................................................................................................11.1设计背景..........................................................................................................................11.2设计资料..........................................................................................................................11.3自然状况................................................................