第页摘要本设计为拟建的西安市第六污水处理厂工艺设计，处理规模为10万m3/d，设计出水水质执行《城镇污水处理厂污染物排放标准》GB18918-2002一级B标准。经查阅资料和现场调研，通过工艺比选，确定采用卡鲁塞尔氧化沟为西安市第六污水处理厂的主体处理工艺，该工艺具有处理流程简单、操作管理方便、出水水质好、工艺可靠、建设投资省和运行费用低等优点。在此基础上，确定了污水处理流程为：进水井→粗格栅→提升泵房→细格栅→曝气沉砂池→氧化沟→二沉池→接触池；污泥处理流程为：剩余污泥泵房→浓缩池→贮泥池→脱水间。进行了各单体构筑物的工艺设计和计算，污水处理厂的平面布置，水力计算和高程设计等。在此基础上，完成了平面图、高程图以及主要构筑物的设计和图纸绘制。本工程的实施将显著改善受纳水体水质，同时间接产生经济效益，促进经济可持续发展。关键词：城市污水；卡鲁塞尔氧化沟；工艺设计AbstractTheprojectistheprocessdesignofSixthSewageTreatmentPlanttobuildinXi'an.Treatmentcapacityis100000m3/d.ThewaterqualityineffluentwillmeettherequirementoftheStateDischargingStandardofPollutantsforMunicipalWastewaterTreatmentPlant(GB18918-2002)1B.Thoughresourcingdataandinvestigationandsomecomparison,thisdesignusesCarrouseloxidationditchprocess.theprocesshassomeadvantageslikeeasyoperationandmanagement,processreliability,savinginvestment,goodtreatmenteffect,andsoon。Onthisbasis,determinedthesewagetreatmentprocessfor:wellofwater→thickgrille→aerationsinksandpool→oxidationditch→secondarysedimentationtank→contactchamber；Thesludgetreatmentprocessfor:excesssludgepumproom→concentratedtank→mudstoragepool→betweendehydration。Theplanlayoutofthestructuresofthemonomerprocessdesignandcalculation,sewagetreatmentplant,thehydrauliccalculationandelevationdesign,etc.Basedonthis,thisdesigncontainstheidentification,eachmonomerprocessofcalculation,constructiondrawingsdrawingetc.Theimplementationofthisprojectwillsignificantlyimprovethewaterqualityofreceivingwater,andindirecteconomicbenefitsandpromotesustainableeconomicdevelopment.Keywords:urbansewage;Carrouseloxidationditch;processdesign目录TOC\o"1-3"\h\uHYPERLINK\l_Toc56621前言PAGEREF_Toc56624HYPERLINK\l_Toc38961.1城市污水来源PAGEREF_Toc38964HYPERLINK\l_Toc261711.2城市污水的危害PAGEREF_Toc261714HYPERLINK\l_Toc295732设计计算PAGEREF_Toc295738HYPERLINK\l_Toc80292.1设计水量及水质PAGEREF_Toc80298HYPERLINK\l_Toc281532.1.1设计污水量PAGEREF_Toc281538HYPERLINK\l_Toc191172.1.2进水水质PAGEREF_Toc191178HYPERLINK\l_T