摘要
目的了解山东日照市东港区农村各类型饮水中硝酸盐分布状况,为农村改水和水质管理提供科学依据。方法对辖区内25处小型集中式供水地表水源点(各取水源水和末稍水),40处自备井的末稍水,实施监测并进行统计分析。结果2013年农村各类型水中以井水中的硝酸盐含量最高,均值达15.6,接近GB 5749-2006《生活饮用水卫生标准》中小型集中式供水限值(≤20mg/L),不合格率为20.00%;总计90份样品中,12份不合格,不合格率为13.33%,作为水源的地表水和末稍水的硝酸盐含量非常接近,经水厂处理后,硝酸盐的平均去除率为0.49%。结论各类型水硝酸盐都有超标情况,应选好水源,加强管理。
Objectives To understand the distribution of nitrate in different types of water in our district and provide evidence for a need to improve water quality and water quality control in the rural area.Methods Surface water of 25 small central water supply systems（including source water and tap water） and tap water of 40 wells were collected.Monitoring and statistical analysis were performed.Results Among all types of rural area water in 2013,well water had the highest nitrate content.The average nitrate content was 15.6 mg / L,close to the ≤20mg / L standard for daily drinking water middle and small-sized central water supply systems（GB 5749-2006）.The failure rate standard is ≤20.00%.Among the 90 water samples,12 failed to meet the standard,a failure rate of 13.33%.Though it is a water source,surface water had a similar nitrate content to tap water.Water treatment yielded an average nitrate removal rate of 0.49%.Conclusion The nitrate content of all types of water was excessive.Water sources should be carefully selected and water management should be strengthened.
出处
《公共卫生与预防医学》
2015年第2期35-36,共2页
Journal of Public Health and Preventive Medicine
作者简介
焦淑波，检验师，主要研究方向：卫生检验
