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Electrochemically and Bioelectrochemically Induced Ammonium Recovery
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利用代谢途径调节和多种内源驱动力,从含有大量氨的极低C/N比率的废水中可持续地去除
Pengcheng Wang1, Jieying Zhou1, Bin Lu1
1State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
Environmental research
|July 27, 2025
概括
一个新的脱-双阶段的同时化-亚纳摩克斯-脱 (DDS) 工艺有效地从废水中去除高氨,碳比较低. 这种可持续的方法大大减少了能源消耗,并消除了对外部碳来源的需求.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 微生物生态学 微生物生态学
背景情况:
- 高氨废水处理与低化学氧需求 (COD) 与总 (C/N) 的比率提出了诸如高能源使用和依赖外部碳来源等挑战.
- 当C/N比率极低时,现有的方法在效率和可持续性方面扎.
研究的目的:
- 开发和评估一种新型的脱-双阶段同时化-亚氧-脱 (DDS) 工艺,用于处理具有极低C/N比率的高氨废水.
- 评估DDS工艺的除效率,适应性和机械基础.
- 为了比较DDS工艺的能源消耗和碳补充要求与传统方法.
主要方法:
- 实施一种新型的脱-双阶段的同时化-亚纳摩克斯-脱 (DDS) 过程.
- 废水的特征是度高的氨 (1000 mg/L) 和低的C/N比率 (1:1-3:1).
- 使用脱驱动力分析和元基因组学的机制研究.
主要成果:
- 在1000mg/L氨和C/N比率为1:1的废水中,达到98.44±0.14%的高去除效率.
- 在C/N比率从1:1到3:1之间表现出适应性,符合严格的排放标准 (TN ≤15 mg/L).
- 通过部分化-anammox和部分化-脱的同时发生,通过内源碳动员的支持,确定了协同作用的去除.
结论:
- DDS工艺为高氨废水处理提供了一个可持续的解决方案,具有较低的C/N比率,减少了处理难度和环境风险.
- 与传统工艺相比,观察到大约50%的通风能量和100%的外源碳料的显著节约.
- DDS过程提供了更低的碳足迹,支持废水处理厂实现碳中和可持续发展目标.
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