曝气生物滤池处理城镇污水分析研究 生物环境专业VIP专享VIP免费

曝气生物滤池处理城镇污水摘要城镇污水主要为生活污水和工业废水的混合污水。目前城镇污水的排放已造成了对水环境生态系统的严重污染，做好城镇污水的处理及再生利用是主要任务之一，解决城镇污水对水环境污染的重要途径之一就是修建污水处理厂。本设计对SBR法、A2/O法、曝气生物滤池法工艺进行了比较，最终确定选用处理效果好、运行管理方便、投资省的曝气生物滤池工艺。该工艺中污水经过粗格栅、细格栅、旋流沉砂池、水解酸化池的一级处理，进入曝气生物滤池进行二级处理后。排出的污泥经过了生化处理较稳定，不需消化浓缩脱水外运，节省了投资。设计过程中通过对各构筑物的设计计算及附属构（建）筑物的设计选型，完成了主要构筑物旋流沉砂池、水解酸化池、曝气生物滤池出图及整个工厂的平面、高程布置，进而完成了污水厂的设计。关键词：城镇污水；水解酸化；上向流曝气生物滤池TheFormatCriterionofMaster’sDegreePaperofDUTAbstractUrbansewageasthemainsewageandindustrialeffluentofsewagemixed.AtpresenturbansewagedischargehascausedthewaterenvironmentecosystemsseriouspollutionanddoagoodjobofurbansewagetreatmentandrecyclingisoneofthemaintasksandsolvetheurbansewagewaterpollutionisoneimportantwaytotheconstructionofsewageWatertreatmentplants.ThedesignoftheSBR,A2/O,BiologicalAeratedFiltertechnologyofthelaw,thefinalchoiceoftreatmenteffect,andfacilitatetheoperationandmanagement,investmentintheBiologicalAeratedFilterTechnology.Theprocessofsewagethroughroughgrid,smallgrille,swirldesiltingpool,poolacidhydrolysisoftheprimarytreatment,intotheBiologicalAeratedFilteraftersecondarytreatment.Afterthesludgefromthebiologicaltreatmentmorestable,notdigestcondenseddirectlydehydrationSinotrans,asavingofinvestment.ThroughtheprocessofeffluenttreatmentcanbeachievedGB18918-2002inaBstandards,andremovalofthewaterqualityindicatorswereCODcr:76%,BOD:86.7%,SS:86.7%,NH3-N:80%,TN:50%,TP:62.5%.Throughthevariousstructuresofthedesignandcalculationandsubsidiarystructure(built)tobuildthedesignselection,completedthemainstructureswirldesiltingpool,poolacidhydrolysis,BiologicalAeratedFiltertoplanandplantthewholeplane,elevationlayoutandthencompletedawastewatertreatmentplantdesign.KeyWords：BiologicalAeratedFiltertechnologyofthelaw；Urbansewage；facilitatetheoperation目录摘要........................................................................................................................................IIAbstract.....................................................................................................................................III引言....................................................................................................................................-1-1绪论.....................................................................................................................................-2-1.1研究的目的和意义..................................................................................................-2-1.2国内外污水处理现状及发展..................................................................................-3-1.2.1国外城市污水处理发展状况...............................................................................-3-1.2.2我国城市污水处理发展状况...............................................................................-4-2设计概述.............................................................................................................................-6-2.1污水处理厂设计资料........................................................