摘要
以2015年7月和2016年1月对鄱阳湖周边农村饮用水实测数据为参考,分析NH_4^+-N、NO_3^--N、TN、TP的含量变化,并对周边农村饮用水进行安全评价以及污染来源进行探讨。结果表明:氮磷含量在季节上存在显著差异,NH_4^+-N、NO_3^--N、TN、TP的浓度变化范围分别为0.04~0.47,0.18~19.52,0.36~23.02,0.002~0.89mg·L^(-1);丰水期NO_3^--N、TN平均质量浓度分别达到10.85和11.82 mg·L^(-1),高于枯水期质量浓度;NH_4^+-N则是枯水期时含量更高,为0.35mg·L^(-1);TP质量浓度都较低。通过饮用水安全评价分析发现,环湖区周边农村饮用水都在Ⅲ类以内,水质合格。NO_3^--N是浅层地下水中的主要污染物,污染来源比较复杂,主要与不同土地利用类型有关,表现为水产养殖区最严重,其次为农业种植的影响;NH_4^+-N在赣江周边出现高值区,受城市污水作用明显。
Based on the measured concentration of ammoniacal nitrogen（NH4^＋-N）,nitrate nitrogen（NO3^--N）,total nitrogen（TN）,total phosphorus（TP）in rural areas of Poyang Lake in July 2015 and January 2016,the concentration variations were analyzed and the safety evaluation of the surrounding rural drinking water was carried out,and pollution sources of NH4^＋-N,NO3^--N,TN,TP are analyzed.The results show that there were significant differences in the contents of nitrogen and phosphorus in the season,the mean concentration of NH4^＋-N,NO3^--N,TN,TP were 0.04～0.47,0.18～19.52,0.36～23.02,0.002～0.89 mg·L^-1,and the mean concentration of NO3^--N and TN were higher in the wet season than that in the dry season,which the average concentrations of NO3^--N and TN in the wet season were 10.85 mg·L^-1 and 11.82 mg·L^-1.while the content of NH4^＋-N in the dry season was 0.35 mg·L^-1,which was higher than that in the wet season.TP quality concentrations are low.Through the use of water quality index analysis found that the surrounding rural drinking water in the area around Poyang Lake than ClassⅢ,which belongs to the rural drinking water quality is still good.NO3^--N is the main pollution in shallow groundwater in the study area,and the pollution sources are complicated.It is mainly related to different land use types,which the most serious pollution is aquaculture area,followed by agricultural cultivation.NH4^＋-N mainly in the Ganjiang surrounding a higher concentration,mainly affected by the impact of urban sewage.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2017年第5期470-476,共7页
Journal of Nanchang University(Natural Science)
基金
国家自然科学基金资助项目(41663002)
江西省自然科学基金资助项目(20161BAB203080)
鄱阳湖环境与资源利用重点实验室支持项目(13005879
13005870)
国家级创新创业训练项目(201701031)
关键词
农村饮用水
氮、磷
环鄱阳湖区
安全评价
rural drinking water
nitrogen and phosphorus
the district of Poyang Lake
safety evaluation
