在超的条件下,化反应堆的氧化排放量
Samah Abasi1, Sheldon Tarre1, Michal Green1
1Faculty of Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel.
控制散装氨和酸盐度可以显著减少氧化物 (N2O) 在高盐化和化过程中的排放. 降低氨量低于1毫克N/L,将N2O减少了90%.
科学领域:
- 环境微生物学环境微生物学
- 污水处理 污水处理 污水处理
- 温室气体排放量排放量 温室气体排放量
背景情况:
- 氧化 (N2O) 是一种强大的温室气体.
- 化和化是废水处理中的关键过程.
- 超的条件对微生物过程带来了独特的挑战.
研究的目的:
- 为了研究在高盐化过程中的N2O排放.
- 确定控制固定床反应堆N2O生产的因素.
- 评估减轻N2O排放的战略.
主要方法:
- 使用了连续养和混合固定床反应堆.
- 实验是在4%的盐度下进行的.
- 对溶解氧 (DO),和酸盐度进行了监测.
主要成果:
- 随着DO的增加,N2O的排放量下降,但即使在15 mg/L的情况下也持续存在.
- 大量氨度是控制N2O排放的主要因素.
- 减少氨的含量低于1毫克N/L,使N2O减少了90%左右.
- 在完全化下,将酸盐降低到0.3毫克N/L以下,将N2O降低了60%左右.
结论:
- 大量氨度是化和化过程中N2O排放的关键控制点.
- 和亚酸盐的有针对性的减少可以显著减轻高盐废水处理中的N2O生产.
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