摘要
目的研究广州市市政供水出厂水中浑浊度特征和变化趋势,初步探索浑浊度对pH值和耗氧量的影响,为饮用水水质管理提供科学依据。方法对2003—2018年广州市政供水厂的出厂水进行抽样和检测,整理分析480份监测样品的数据。不同季度和水期出厂水的浑浊度水平采用均值±标准差表示,采用单因素方差分析比较不同季度和水期的监测值水平,采用Pearson相关性分析评估浑浊度与pH值和耗氧量之间的相关性。结果2003—2018年出厂水的浑浊度合格率为98.54%(473/480),浑浊度水平总体呈现下降趋势(r=-0.632,P<0.001),pH值总体呈上升趋势(r=0.791,P<0.001),耗氧量总体呈下降趋势(r=-0.833,P<0.001)。第一季度出厂水的浑浊度与pH值(r=-0.163,P=0.076)和耗氧量(r=0.173,P=0.134)无相关性。其余季度和不同水期的pH值与浑浊度呈负相关,其余季度和不同水期的耗氧量与浑浊度呈正相关。结论2003—2018年广州市市政供水出厂水的浑浊度水平总体呈下降趋势,浑浊度监测对pH值和耗氧量有一定的预示作用,为饮用水的监测提供参考。
Objective To examine the turbidity characteristics and their variation trend of the tap water of Guangzhou municipal water supply,and explore the influence of turbidity on pH value and oxygen consumption,so as to provide scientific basis for drinking water quality management.Methods The tap water samples of Guangzhou municipal water supply plants from 2003 to 2018 were tested,and the data of 480 monitoring samples were collated and analyzed.Means±standard deviation was used to represent the turbidity levels in tap water during different quarters and water periods.One-way ANOVA was employed to compare monitoring value levels across different quarters and water periods.Pearson correlation analysis was utilized to assess the correlation between turbidity,pH values,and oxygen consumption.Results From 2003 to 2018,the qualified rate of turbidity of the tap water was 98.54%(473/480).Turbidity levels exhibited a general decreasing trend(r=-0.632,P<0.001),while pH values showed an overall increasing trend(r=0.791,P<0.001),and the oxygen consumption showed a general downward trend(r=-0.833,P<0.001).No correlation was found between turbidity and pH values(r=-0.163,P=0.076)or oxygen consumption(r=0.173,P=0.134)in the first quarter of the tap water.However,pH values in subsequent quarters and water periods displayed a negative correlation with turbidity,while oxygen consumption in these periods showed a positive correlation with turbidity.Conclusion Turbidity levels in tap water from Guangzhou's municipal water supply generally exhibits a declining trend from 2003 to 2018.Turbidity monitoring is predictive value for pH values and oxygen consumption,providing references for monitoring drinking water.
作者
周金华
姜燕婷
时绍轩
陈怡然
钟嶷
黎晓彤
黄仁德
孙丽丽
王德东
毕华
王大虎
ZHOU Jinhua;JIANG Yanting;SHI Shaoxuan;CHEN Yiran;ZHONG Yi;LI Xiaotong;HUANG Rende;SUN Lili;WANG Dedong;BI Hua;WANG Dahu(Department of Disinfection and Vector Control,Guangzhou Center for Disease Control and Prevention,Guangzhou,Guangdong 510440,China;不详)
出处
《医学动物防制》
2024年第5期451-453,458,共4页
Journal of Medical Pest Control
基金
广东省医学科研基金项目(B2022264)
广州市卫生健康科技一般引导项目(20211A011062)。
关键词
浑浊度
PH值
耗氧量
相关性
Turbidity
pH value
Oxygen consumption
Correlation
