摘要
目的了解丰台农村地区自备井水质总硬度、硝酸盐氮分布特征和变化趋势,为农村改水和水质管理提供科学依据。方法采用普查方法对全部在用自备井的末梢水进行监测,检测依据生活饮用水卫生标准检验方法(GB5750-2006),结果判定依据生活饮用水卫生标准(GB5749-2006)。结果 2011年农村地区自备井水质总硬度和硝酸盐氮平均浓度分别为576±137 mg/L、22.0±10.6 mg/L,超标率分别为83.1%、90.0%,二者均具有明显的区域分布特征;深水井和浅水井总硬度差异无统计学意义,浅水井硝酸盐氮水平远高于深水井。结论丰台农村地区自备井水质总硬度、硝酸盐氮总体水平偏高,浅水井水质应是农村改水和监测重点,水源应尽量选取深水井。
Objective To explore the distribution and developing trend of total hardness and nitrates in drinking water of rural self-sufficient wells in Fengtai district and to provide scientific evidence for rural water renovation and water quality management.Methods All the terminal water in rural self-sufficent wells were detected according to the standard examination methods for drinking water（GB5750-2006）,the examination were evaluated according to the standards for drinking water quality（GB5749-2006）.Results The average concentration of total hardness and nitrates in drinking water were 576±137 mg/L and 22.0±10.6 mg/L respectively,83.1% and 90.0% of them exceeded the standard respectively,either of them has significient areal distribution.No significient difference was found in the concentration of total hardness in drinking water between deep wells and shallow wells,the concentration of nitrates in drinking water in shallow wells was higher than that of deep wells.Conclusion The level of total hardness and nitrates in drinking water of rural self-sufficient wells in Fengtai district were higher,shallow wells should be the keypoint of rural water renovation and water quality management,deep wells should be taken into consideration while selecting water source.
出处
《预防医学情报杂志》
CAS
2012年第4期276-278,共3页
Journal of Preventive Medicine Information
关键词
自备井
总硬度
硝酸盐氮
self-sufficient well
total hardness
nitrates
