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    王金玉, 李盛, 李守禹, 常旭红, 王龄庆, 贾清, 成震香, 刘琼, 余加琳, 张英. 2013年—2015年兰州市农村集中式供水卫生状况分析[J]. 环境卫生学杂志, 2017, 7(1): 6-9, 14. DOI: 10.13421/j.cnki.hjwsxzz.2017.01.002
    引用本文: 王金玉, 李盛, 李守禹, 常旭红, 王龄庆, 贾清, 成震香, 刘琼, 余加琳, 张英. 2013年—2015年兰州市农村集中式供水卫生状况分析[J]. 环境卫生学杂志, 2017, 7(1): 6-9, 14. DOI: 10.13421/j.cnki.hjwsxzz.2017.01.002
    shu
    WANG Jinyu, LI Sheng, LI Shouyu, CHANG Xuhong, WANG Lingqing, JIA Qing, CHENG Zhenxiang, LIU Qiong, YU Jialin, ZHANG Ying. Investigation on Centralized Water Supplies in Rural Areas of Lanzhou in 2013—2015[J]. Journal of Environmental Hygiene, 2017, 7(1): 6-9, 14. DOI: 10.13421/j.cnki.hjwsxzz.2017.01.002
    Citation: WANG Jinyu, LI Sheng, LI Shouyu, CHANG Xuhong, WANG Lingqing, JIA Qing, CHENG Zhenxiang, LIU Qiong, YU Jialin, ZHANG Ying. Investigation on Centralized Water Supplies in Rural Areas of Lanzhou in 2013—2015[J]. Journal of Environmental Hygiene, 2017, 7(1): 6-9, 14. DOI: 10.13421/j.cnki.hjwsxzz.2017.01.002
    shu

    2013年—2015年兰州市农村集中式供水卫生状况分析

    Investigation on Centralized Water Supplies in Rural Areas of Lanzhou in 2013—2015

      摘要
    • 摘要:
      目的 了解兰州市农村集中式供水卫生现状。
      方法  2013年—2015年随机整群选取兰州市农村集中式供水工程471个，分别于枯水期和丰水期采集出厂水、末梢水水样进行水质检测分析。水样的采集和检验按照《生活饮用水标准检验方法》 (GB/T 5750-2006) 进行。水样的评价按照《生活饮用水卫生标准》 (GB/T 5749-2006) 进行。采用SPSS 18.0统计软件包进行χ2检验。
      结果 共采集水样941份，合格率47.7%。2013年— 2015年水样合格率波动下降，地下水高于地表水 (P < 0.05);丰水期和枯水期比较，出厂水和末梢水比较，差异均无统计学意义。35项检测指标中，合格率低于90%的指标包括总大肠菌群、耐热大肠菌群、菌落总数、浑浊度、硫酸盐、溶解性总固体和总硬度7项，其中以总大肠菌群合格率最低 (74.7%)。
      结论  兰州市农村集中式供水水质合格率较低且波动下降; 微生物、感官性状和一般化学指标是水质合格率较低的重要原因。

       

      Abstract:
      Objective  To analyze the present situation on drinking-water quality of centralized water supplies in rural areas of Lanzhou.
      Methods  A total of 471 rural centralized water supplies in the city were selected by random sampling. The finished water and terminal piped-water samples were collected and examined in dry season (from March to April) and rainy reason (July to August) of 2013 to 2015. Water samples were collected and examined in accordance with the Standard Examination Methods for Drinking Water (GB/T 5750-2006). The evaluation of water samples was carried out according to the Standards for Drinking Water Quality (GB/T 5749-2006). SPSS 18.0 software package was used to perform chi-square test.
      Results The overall qualified rate of water samples was 47.7%. The qualified rate ground water (54.0%) was significantly higher than that of surface water (41.6%, P < 0.05). The water qualities between finished water and terminal piped-water and those between dry and rainy seasons were not significantly different. The qualified rates of 7 indicators, including total coliforms, heat reistant coliform, total numbers of colony, turbidity, sulfates, total dissolved solids and total hardness were less than 90%. In addition, the qualified rate of total coliform (74.7%) was the lowest in this study.
      Conclusions The qualified rate of centralized water supplies in Lanzhou was low, and showed a downward fluctuation trend. The main reason caused the low qualified rates was microbial, chemical and acceptability indicators in drinking-water.

       

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