2017—2020年齐齐哈尔市管网末梢水监测结果分析  

Analysis on monitoring results of tap water network of Qiqihaer City from 2017 to 2020

作　　者：张蕾[1] 杜华楠 范雯谡[1] 王姣[1] 朱吉凯[1] ZHANG Lei;DU Hua-nan;FAN Wen-su;WANG Jiao;ZHU Ji-kai(Qiqihaer Center for Disease Control and Prevention,Qiqihaer 161000,Heilongjiang Province,China)

机构地区：[1]齐齐哈尔市疾病预防控制中心,黑龙江齐齐哈尔161000

出　　处：《职业卫生与病伤》2022年第1期45-48,共4页Occupational Health and Damage

摘　　要：目的了解齐齐哈尔市生活饮用水的卫生状况,为水质监督管理及改善居民饮水健康提供科学依据。方法2017—2020年根据各区人口数量设置监测点,按照GB/T 5750-2006《生活饮用水标准检验方法》对样品进行采集、保存、运输和检测,检测结果按照GB 5749-2006《生活饮用水卫生标准》进行卫生学评价。率的比较采用χ^(2)检验,以P<0.05为差异有统计学意义。结果2017—2020年共监测末梢水样2058件,合格1706件,总体合格率82.90%,其中2017年合格率为78.12%,2018年为78.65%,2019年为85.42%,2020年为90.91%,各年水质合格率差异有统计学意义(χ^(2)=32.89,P<0.01)。建华区总合格率最高,(96.19%),昂昂溪区总合格率最低(55.88%)。每件样品检测13项指标,共监测指标26754个,合格指标26363个,合格率98.54%,主要不合格指标为铁、锰、消毒剂、菌落总数和总大肠菌群。丰水期检测水样796件,合格率86.56%,枯水期检测686件,合格率80.24%,枯水期总合格率高于丰水期,差异有统计学意义(χ^(2)=4.70,P<0.05)。结论齐齐哈尔市市政管网末梢水总体情况较好,但仍存在部分地区、部分指标不合格现象,建议进一步加强饮用水安全卫生管理和监督工作。Objective To understand the sanitary condition of drinking water in Qiqihar city,and to provide a scientific basis for supervising water quality and to improve the quality of drinking water of residents.Methods The monitoring stations were set up according to the population of each district.The samples were collected,stored,transported and tested according to the Standard Examination Methods for Drinking Water(GB/T 5750-2006),and the results were evaluated according to the Drinking Water Sanitary Standard(GB 5749-2006).Chi-square test was adopted and the test level wasα=0.05.Results A total of 2058 samples of tap water were analyzed,and1706 of them were qualified with the total qualified rate of 82.90%.The qualified rate was 78.12%in 2017,78.65%in 2018,85.42%in 2019 and 90.91%in 2020,and there was a significant difference in the qualified rate of water quality in each year(χ^(2)=32.89,P<0.01).Among them,the total qualified rate of Jianhua district was the highest with 96.19%,and that of Angangxi district was the lowest with 55.88%.Each sample were detected 13 indicators,a total of 26754indicators were analyzed,26363 of them were qualified with the qualified rate of 98.54%.The main unqualified indicators were iron,manganese,disinfectant,total bacterial count,and total coliform 796 water samples were tested in wet season with a qualified rate of 86.56%,and 686water samples were tested in dry season with a qualified rate of 80.24%.The total qualified rate in the dry season was higher than that in the wet season,and the difference was statistically significant(χ^(2)=4.70,P<0.05).Conclusions The terminal tap water quality is good in general in Qiqihar,but there are still abnormal results of some districts and indicators,and it is suggestted to further strengthen the management and supervision of drinking water safety and sanitation.

关 键 词：末梢水 水质监测 结果分析 

分 类 号：R123.1[医药卫生—环境卫生学]