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宿州市埇桥区乡镇水厂重金属含量与水质评价

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为探究宿州市埇桥区各乡镇自来水厂供水端重金属含量状况,于2021 年7-8月对24 个乡镇自来水厂进行水样采集,测定了水中砷(As)、镉(Cd)、铬(Cr)、铜(Cu)、铁(Fe)、锰(Mn)、镍(Ni)、铅(Pb)和锌(Zn)的质量浓度,并利用单因子指数法和内梅罗综合污染指数法对各水厂重金属污染水平进行评价.结果表明:重金属的平均质量浓度从大到小依次为:Mn＞Zn＞Fe＞Cu＞Cr＞As＞Ni＞Pb＞Cd;与《生活饮用水卫生标准》(GB 5749-2022)相比,Mn的超标率最高,为4.17%;其他 8 种重金属质量浓度均低于相应的标准限值;单因子污染指数(Pi)平均值从大到小排序为:Mn(0.248)＞As(0.063)＞Pb(0.041)＞Cr(0.028)＞Ni(0.023)＞Fe(0.020)＞Zn(0.010)＞Cd(0.005)＞Cu(0.002);从综合污染指数(Pn)看,仅桃沟水厂达到轻度污染,其他水厂均在安全范围内;从空间分布上看,Pn 和Mn的单因子污染指数的高值中心区主要分布在桃沟和朱仙庄水厂附近.Mn为研究区水厂的优控污染重金属.研究结果可为埇桥区水厂重金属污染防控与优化水处理工艺提供依据.
Heavy Metal Content and Water Quality Assessment of Township Water Plants in Yongqiao District,Suzhou City
To investigate the heavy metal content in the tap water of Yongqiao District,Suzhou City,water samples from 24 towns were collected during the period from July to August 2021.The contents of As,Cd,Cr,Cu,Fe,Mn,Ni,Pb,and Zn in the water were measured,and the pollution level of heavy metals was evaluated by the single factor index method and Nemerow comprehensive pollution index method.The results showed that the average concentration of heavy metals in descending order was:Mn＞Zn＞Fe＞Cu＞Cr＞As＞Ni＞Pb＞Cd.Compared with the"Standards for drinking water quality"(GB 5749-2022),Mn has the highest exceeding rate(up to 4.17%),and the concentration of the other 8 heavy metals are all below the value set by the above standard;The average of the single factor pollution index(Pi)in descending order is as follows:Mn(0.248)＞As(0.063)＞Pb(0.041)＞Cr(0.028)＞Ni(0.023)＞Fe(0.020)＞Zn(0.010)＞Cd(0.005)＞Cu(0.002);The comprehensive pollution index(Pn)showed only the water plant in Taogou Town has mild pollution,while others are within the safe range.From a spatial distribution perspective,the high values of Pn and Mn single factor pollution index are mainly distributed near Taogou and Zhuxianzhuang.Among the measured heavy metals,Mn is the priority pollution control heavy metal for the water plant.This study can provide a basis for the prevention and control of heavy metal pollution and the optimization of the water treatment process for township waterworks in Yongqiao District.

Heavy metalsPollution assessmentTownship water plantWater quality assessmentSuzhou

程梦敏、彭位华、张新蕾、林曼利、余浩

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宿州学院,资源与土木工程学院,安徽 宿州 234000

宿州学院,矿井水资源化利用安徽普通高校重点实验室,安徽 宿州 234000

重金属 污染评价 乡镇水厂 水质评价 宿州

安徽省高等学校优秀青年人才支持计划重点项目宿州学院科研发展基金安徽省大学生创新创业训练计划国家级大学生创新创业训练计划宿州学院大学生创新创业训练计划

gxyqZD20211342021fzjj28S202310379193202310379030YBXM23-034

2024

10.3969/j.issn.1674-6732.2024.02.014

环境监控与预警
江苏省环境监测中心

环境监控与预警

CSTPCD
影响因子：0.788
ISSN：1674-6732
年,卷(期)：2024.16(2)
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