基于三角分析法的城市污水管网入流入渗量评估

WaterPollutionandTreatment水污染及处理水污染及处理,2019,7(4),152-159PublishedOnlineOctober2019inHans.http://www.hanspub.org/journal/wpthttps://doi.org/10.12677/wpt.2019.74022文章引用文章引用:王小婷,姚越,周炜,尤岚,曾思育.基于三角分析法的城市污水管网入流入渗量评估[J].水污染及处理,2019,7(4):152-159.DOI:10.12677/wpt.2019.74022QuantificationofInflowandInfiltrationinUrbanSewerSystemsBasedonTriangleMethodXiaotingWang1,YueYao2,WeiZhou3,LanYou3,SiyuZeng1*1SchoolofEnvironment,TsinghuaUniversity,Beijing2ChinaAcademyofUrbanPlanning&Design,Beijing3SuzhouDrainageCompanyLimited,SuzhouJiangsuReceived:July24th,2019;accepted:August8th,2019;published:August15th,2019AbstractInflowandinfiltrationofexternalwaterintosewersystemsexistgenerallyintheplainrivernet-workarea,whichweakensthetransmissioncapacityofpipelinesandtheefficiencyofthewaste-watertreatmentplants.Inthisstudy,trianglemethodisappliedtoanalyzetheoutletflowofse-wagepipelinesinaspecifictimeperiod.Thescaleandcompositionoftheexternalwatervolumeareevaluatedaccordingtotheprincipleofwaterbalanceusingdailywastewatertreatmentplantinflowdataandrainfalldata.TheassessmentofthesewersysteminSuzhoucentraldistrictduringtheperiodof2014-2017showsthattheamountofexternalwateraccountsfor27%-33%ofthetotalflowcollectedannually.Averagedailyexternalflowaccountsfor22%indrydaysand43%inrainydays,amongwhichtheaverageinfiltrationandinflowratesareseparately16%and27%.Theseverityofinflowandinfiltrationinwetweatherisderivedandintensifiedbytherain.Thisstudyidentifiedtheinflowandinfiltrationcharacteristicsofthesewersystemsinthecasearea,andverifiedtheadverseeffectsofexternalwaterontheoperationofthesystems.Theanalyticalresultscanprovideabasisforthedevelopmentofthepipelinerepairprogram.KeywordsSewerSystem,InflowandInfiltration,TriangleMethod,Rainfall基于三角分析法的城市污水管网入流入渗量基于三角分析法的城市污水管网入流入渗量评估评估王小婷王小婷1，姚，姚越2，周，周炜3，尤，尤岚3，曾思育，曾思育1*1清华大学环境学院，北京*通讯作者。王小婷等DOI:10.12677/wpt.2019.74022153水污染及处理2中国城市规划设计研究院，北京3苏州市排水有限公司，江苏苏州收稿日期：2019年7月24日；录用日期：2019年8月8日；发布日期：2019年8月15日摘要平原河网地区分流制污水系统普遍存在外来水入流入渗现象，管网输送能力和污水厂处理效能均受到负平原河网地区分流制污水系统普遍存在外来水