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Analysis of the changing trend of groundwater hardness in the middle-upper area of the Yongding River, Beijing, China
Cui, Y
Shao, J
Liu, Y
12th International Symposium on Water-Rock Interaction (WRI-12), 2007-7-31 ~ 2007-8-5, pp 1033-1036, 2007
Groundwater hardness is an important index for judging the quality of water environments. A soil-column test and correlation analysis of experiment data show that rising groundwater hardness has a direct linear relationship with the pollution by nitrate nitrogen; a soak test also shows that the trend of soak hardness declines with the lowering of nitrate nitrogen by denitrification.
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