基于饮用水终端用户的管网水质调查及影响因素分析

第45卷第8期2019年给水排水WATER&WASTEWATERENGINEERINGVol.45No.82019・给排水管网・基于饮用水终端用户的管网水质调查及影响因素分析周晓燕任峰沈雁刘友飞陈华陈志坚陈静波（绍兴市公用事业集团水务产业有限公司，绍兴312000）摘要以浙江省绍兴市为调查对象，针对其供水辖区内所有小区的多层、高层用户，通过2年的时间，系统抽查了不同区域位置、不同用户管材、不同用水量及不同季节中的用户水质，对余氯、浊度、pH、菌落总数等管网中容易产生波动的水质参数进行检测。调查发现在绍兴市的管网条件及管理模式下，用户龙头水质除余氯合格率为94.77%,略低于国家标准外，其他3个指标合格率均在99%以上，可以达到国家规定的要求。调查同时分析了用户区域分布、用水量、用水习惯及季节变化、入住率等对用户龙头水质的影响，发现保证用水量大于5!!?/（户•月）、早晨初次用水前放水1min,高层入住率高于40%时对改善终端用户的水质具有明显的效果。关键词管网水质终端用户龙头水质水质合格率中图分类号:TU991文献标识码：A文章编号:1002-8471（2019）08-0118-06DOI：10.13789/j.cnki.wwel964.2019.08.023Investigationofwaterqualityandanalysisofinfluencingfactorsinwaterdistributionnetworksbasedondrinkingwaterend-usersZhouXiaoyan,RenFeng,ShenYan,LiuYoufei,ChenHua,ChenZhijian,ChenJingbo{ShaoxingPublicUtilitiesGroupWaterIndustryCo,,Ltd.,Shaoxing312000,China）Abstract:Thispapertookthemulti-storeyandhigh-riseresidentialusersofalltheresidentialareasinthewaterdistributionnetworksofShaoxingCityastheobjectofinvestigation.Thewaterqualityofusersindifferentregions,differentuserpipes,differentwaterconsumptionanddifferentseasonssystematicallywereinvestigatedthroughtwoyears.Thefluctuatingwaterqualityparametersinthewaterdistributionnetworkssuchasresidualchlorine,turbidity,pH,standardplate-countbacteriaweredetected.Theinves­tigationfoundthatundertheconditionandmanagementmodeofwaterdistributionnetworksinShaoxingCity,exceptthatthequalifiedrateofresidualchlorinewas94・77%,slightlylowerthanthenationalstandard,thequalifiedrateofotherthreeindicatorswereabove99%,whichcouldmeettherequirementsofthenationalstandard.Theinvestigationalsoanalyzedtheinfluenceofareadistributionofusers,waterconsumption,waterusehabits,seasonalvariationandoccupancyrateonthewaterqualityofuser'stap.Itwasfoundthatwhenthewaterconsumptionwasmorethan5m3/householdpermonthandthewaterwasdischargedfor1minutebeforethefirstuseofwaterinthemorningandtheoccupancyrateofhigh-riseres­identialareawashigherthan40%,ithadobviouseffectonimprovingthewaterqualityoftheend-users.Keywords:Waterqualityinthewaterdistribut