涉及氨输入,微生物化和化溶解的合工艺控制了在平山区 (中国青水河) 的河流酸盐污染
Jun Li1, Haoyang Liu1, Hongwei Pei1
1Hebei Key Laboratory of Water Quality Engineering and Comprehensive Utilization of Water Resources, Hebei University of Architecture, Zhangjiakou 075000, China.
The Science of the total environment
|May 5, 2024
概括
河流中的分散酸盐污染是由氨输入,微生物化和酸诱导的岩溶解在皮埃蒙特地区驱动的. 管理氨排放是缓解这种广泛的农业污染的关键.
科学领域:
- 环境化学环境化学
- 水文学的水文学
- 生物地质化学生物地质化学
背景情况:
- 农业地区的河流面临着严重的分散酸盐 (NO) 污染.
- 与皮埃蒙特地区矿物溶解相关的河流酸盐污染机制尚不清楚.
研究的目的:
- 在典型的皮埃蒙特地区调查河流酸盐的来源,生物地化学进化和自然减弱.
- 阐明酸盐污染的驱动机制,特别是矿物溶解的作用.
主要方法:
- 液体地质化学分析
- 稳定同位素分析 (δ18O-NO3-, δ15N-NO3-, δ18O-H2O, δ2H-H2O) 是一个非常简单的方法.
- 分子生物信息是分子生物信息.
主要成果:
- 在农业用河流流域观察到高酸盐度,其中一些超过饮用水限制.
- 酸盐主要来源于含的污染物 (,污水,肥料,土壤).
- 微生物化将转化为酸 (HNO),从而加速酸溶解和酸盐释放.
结论:
- 氨输入,微生物化和HNO诱导的岩溶解是皮埃蒙特地区河流酸盐污染的关键驱动因素.
- 微生物化是酸盐污染的重要,以前被低估的因素.
- 缓解策略应侧重于氨排放管理,考虑到HNO驱动的矿物溶解的作用.
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