摘要
[目的 ]了解挥发酚类、锰、氨氮污染物在取水沟槽中自净进程的变化规律 ,为受污染水的处理提供科学依据。 [方法 ]就我市某水厂水源水污染连续监测数据 ,对挥发酚类、锰、氨氮污染物在水厂取水沟槽内浓度变化进行了动态观察 ,按环境质量指数评价方法进行分析。 [结果 ]挥发酚类指标变化迅速 ,11天达地表水环境质量标准 级 ,氨氮次之达 16天 ,锰污染指标变化迟缓达 19天。 3种污染物分指数与污染物衰减天数均呈直线回归 ,回归系数 t检验差异均有极显著性 (P<0 .0 1)。 [结论 ]3种污染物自净进程都非常缓慢。且水位变化对水体中锰污染浓度影响最明显 。
[Objective]To find out the regularity of the self-purification processes of the pollutants,such as volatile phenols,manganese and ammonia nitrogen in the water of collection ditch,and provide scientific basis for the treatment of polluted source water.[Methods]The dynamic observation on the changes of the levels of volatile phenols,managese and ammonia nitrogen in water of collection ditch was carried out based on the continuous monitoring data on pollution of source water of a water plant in Wuhan.Then the obtained data were analysed according to the method of environmental quality index (EQI) assessment.[Results]It cost 11 days to reduce pollutant concentrations to the environmental quality standard of surface water Ⅱ grade for volatile phenols,16 days for manganese and 19 days for ammonia nitrogen.The good linear regressions for 3 pollutants were observed between sub-EQIs and attenuation durations of each pollutants with a very significant regressive coefficient (P<001).[Conclusion]The speed of self-purification processes of 3 kinds of pollutants were very slow.The changes of water levels in collection ditch were the main factors affecting the pollution concentrations of manganese in waterVolatile factors were the main cause affecting the self-purification of volatile phenols and ammonia nitrogen in water of collection ditch.
出处
《环境与健康杂志》
CAS
CSCD
北大核心
2000年第6期355-357,共3页
Journal of Environment and Health
关键词
卫生水源
挥发酚类
取水口
水体污染
水厂
武汉
Sanitary of water sources
Volatile phenol
Manganese
Ammonia nitrogen
Self-purification
