污水管网系统提质增效目标可达性分析研究

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中图分类号：X522 文献标志码：A 文章编号：1004-4345（2025）04-0052-06

AbstractAddresing theisueoflowinfluentpollutantconcentrationsaturbansewage treatment plantsdespite hightreatment rates，thisstudytakes theservice areaofasewage treatment plant in Chenzou City，Hunan Provinceas theresearcharea.Using a waterbalancemodelandaone-dimensionalwaterqualitytransportmodelthataccountsforpolutantmigrationandlos，thestudy simulatesandevaluatestheefuentconcentrationoftheexistingpipenetworksystemandanalyzes thereasons foritslow concentrations.Basedontheregion’sproposedwaterqualityassessmenttargets，theimplementationefectsofmeasuresonthe improvementinqualityandeficiencyarepredicted.Theresultsindicatethattheresearchareasimultaneouslyfacesproblemsof external waterintrusioninmanpipesandlowefluentconcentrationsfromsourceareas.Merelyexcludingtheexteralwaterintrusion the total effuent COD can be increased from 59.2 mg/L to 62.1mg/L .To achieve the target of 100mg/L total effluent COD， simultaeousrenovationofsourceareasisrequired.Afterrenovating66sourceaeas，thepredictedtotalfuentCODcaninceaseto 110.2mg/L.Thisstudyprovidesamodelingbasisforefectevaluationanddecision-makinginqualityandeficiencyimprovement projects for sewage network systems.

Keywordsdrainagenetwork simulation;waterbalancemodel;waterqualitytransport model；improvementinqualityand effciency; target accessibility analysis and prediction

城市排水管网是收集与输送城市生产生活污水的重要通道，也是维护城市生态环境安全、保障公共卫生及提升水环境治理能力的关键基础设施之一随着我国城市化进程的快速推进，城市排水管网建设规模持续扩大。（剩余6635字）