水源和水处理方式对辽宁省农村集中式供水硝酸盐含量影响分析  

Analysis on the influence of nitrate in drinking water of central water supply among different types of underground water and treatments

作　　者：李继芳[1] 纪忠义[1] 李景洲[1] 张聿为[1] 

机构地区：[1]辽宁省疾病预防控制中心环境卫生安全所,辽宁沈阳110005

出　　处：《中国卫生工程学》2016年第2期125-126,129,共3页Chinese Journal of Public Health Engineering

摘　　要：目的分析辽宁省农村集中式供水不同地下水源类型和水处理方式对饮用水中硝酸盐的影响,为改善水质提供科学依据。方法采用分层随机抽样方法,对819个监测点使用统一调查表进行基本信息收集,每个监测点枯水期（3~4月）和丰水期（7~8月）采集出厂水样进行检测。采用SPSS 20.0软件进行统计分析。结果地下水源类型中,泉水水源饮用水硝酸盐含量均合格;深井水源的超标率低于浅井水源,分别为7.10%和7.90%。水处理方式中,未处理的超标率（8.10%）最高,其次为仅消毒（4.20%）,沉淀、过滤（0.60%）,完全处理的（100.00%）。结论不同地下水源类型和水处理方式对饮用水中硝酸盐含量有影响。Objective To analyze the influence of nitrate in rural drinking water among different types of underground water and water treatments in Liaoning province,to provide scientific evidence for improving water quality. Methods Stratified random sampling method was adopted; and uniform questionnaire was used to collect essential information in 819 monitoring stations. During dry season（ March,April） and wet season（ July,August）,water were collected for testing in each monitoring stations. Data was analyzed with SPSS 20. 0 software. Results Nitrate contents of spring drinking water were all qualified; ratio of nitrate contents exceed standard of deep well water was lower than the shallow well water,which were7. 10% and 7. 90%,respectively. In different water treatments,ratio of nitrate contents exceed standard with unprocessed was the highest（ 8. 10%）,followed by disinfection only（ 4. 20%）,precipitation and filtration（ 0. 60%）,total treatment were all qualified. Conclusion Different types of underground water and water treatments will influence nitrate content in drinking water.

关 键 词：水源 水处理方式 农村 集中式供水 饮用水 硝酸盐 

分 类 号：R123[医药卫生—环境卫生学]