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I集中供水工程设计中文摘要摘要为解决丘陵区农村存在的饮水不安全问题，在设计一处集中供水工程。该工程设计规模为4000m3/d，设计解决23377人饮水问题。整个工程包括三大部分：取水工程、净水工程和输配水工程。取水工程主要是完成取水点的选择、取水方式的确定和取水泵站的设计，工程采用渗渠取水。输配水工程主要完成管网的定线和水力平差计算，保证各供水点水压满足要求。由于净水厂位于整个工程区的高处，故充分利用地形高差进行重力供水。净水工程的设计包括净水厂的位置选择、水处理工艺流程的确定、处理构筑物的设计计算以及水厂的平面和高程布置。通过技术经济比较，确定净水厂的工艺流程为：原水—→管道混合—→穿孔旋流絮凝池—→斜管沉淀池—→重力式无阀滤池—→ClO2消毒—→清水池—→管网。关键词取水工程净水工程输配水工程穿孔旋流絮凝池斜管沉淀池重力式无阀滤池II英文摘要AbstractInordertosolvetheproblemofunsafedrinkingwaterinruralareasofPengzhouhillyregion,acentralizedwatersupplyprojectwasdesignedinTongjiTownHongshanVillage.Thisprojectwasdesignedtohelp23,377peopledrinkcleanwaterwiththetotalvolumeof4thousandcubicmeters.Thewholeprojectconsistsofthreepartswhichiswaterdiversionproject,watertreatmentprojectandwaterdistributionproject.Thewaterdiversionprojectconsistsoftheselectionofwatersourcelocation,theformofwaterdiversionandthedesignofpumpstation.Andinfiltrationdrainagewasselectedtogetwaterinthisproject.Thispaperalsodemonstratesthedetailprocessofdesignforeachconstructionorapparatusinthewatertreatmentplant.Andthewaterpowerbalanceofgangofwellssystemwascompletelycaculatedwhichhelpmakethispapermoreaccurate.Thewaterallocationandclarificationprojectsarethemajorpartsinthispaper.Theformercontainsthearrangementofpipelines,thedeterminationofpipecaliberaswellaspumplifts.Butinthisproject,thereisnoneedtousepumptoliftwaterbecausegravitywatersupplyisavailablewhichismoreeconomic.Thelatteriswatertreatmentplantdesign.Andaccordingtothesurveyaboutqualityofgroundrawwater,itcanbetransmittedtotheuseronlythroughsimpledisinfection(addchlorinedioxide).Afterprogrammeswerecomparedbothtechnologicallyandeconomically,thisprocesswasselectedwhichisasfollows:rawwater→pipe-shaped→perforationcycloneflocculationtank→inclinedtubeevaporator→gravityvalvelessfilter→disinfection(addchlorinedioxide)→municipalpipenetwork.Keywordswaterdiversionprojects；watertreatmentproject；waterdistributionprojects；perforationcycloneflocculationtank；inclinedtubeevaporator；gravityvalvelessfilter1目录1综合说明..........................................................................................................11.1设计依据...................................................................................................11.2指导思想...................................................................................................11.3设计原则...................................................................................................11.4设计任务...................................................................................................12项目背景..........................................................................................................32.1农村供水基本情况...................................................................................32.1.1自然、社会、经济和水资源概况.....................................................................32.1.2农村人口饮水安全普及程度.............................................................................52.1.3农村供水设施情况及供水能力.........................................................................52.1.4制约农村供水工程建设和饮水安全的因素.....................................................62.2农村饮水安全面临的主要问题...............................................................82.2.1饮用水水质超标.................................................................................................82.2.2水源保证率、生活用水量及用水方便程度不达标.........................................82.3工程建设的必要性...................................................................................93工程方案论证................................................................................................103.1建设规模.................................................................................................103.1.1规划人口...........................................................................................................103.1.2设计水量...........................................................................................................103.1.3建设规模...........................................................................................................133.2水源选择.................................................................................................133.3取水方式.................................................................................................133.4水厂位置方案确定.................................................................................143.4.1厂址选择需考虑的几个问题...........................................................................143.4.2厂址选择的原则...............................................................................................143.4.3厂址选择方案...................................................................................................143.4.4方案比较...........................................................................................................143.5确定处理工艺流程.................................................................................153.5.1混合工艺比较...................................................................................................153.5.2絮凝工艺比较......................................................