通过碳-脱和封装生物填充剂实现的低污泥部分化
Siqi Li1, Xiangyang Wang2, Hefeng Zhang1
1Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China.
Environmental research
|February 5, 2026
概括
在废水处理中,稳定的部分化 (PN) 可以在最小的污泥产量下实现. 这项研究使用封装的生物填充剂和碳-脱来增强低C/N家庭废水的化.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 废水处理 废水处理
背景情况:
- 过度的污泥生产和酸盐氧化细菌 (NOB) 的不稳定性阻碍了活性污泥系统中可持续的部分化 (PN).
- 实现稳定的化与减少污泥产量对于高效的家用废水处理至关重要.
研究的目的:
- 展示使用封装生物填充剂和碳-脱的主流PN反应堆战略.
- 为了实现低C/N的家用废水,以最小的污泥产量实现稳定的化.
主要方法:
- 使用水解-酸化和脱 (HA-DN) 模块进行碳管理,创建碳有限的影响 (C/N ≈ 0.8-1.2).
- 在PN反应堆中使用封装的生物填充剂,以创建高密度,长SRT自的利基.
- 在高溶解氧 (DO) 和缺乏碳的条件下运行,以选择性地丰富氨氧化细菌 (AOB) 并洗掉NOB.
主要成果:
- 实现稳定的化,酸盐积累率>98%,即使在氨荷载增加的情况下.
- 污泥产量显著降低至0.013kgMLSS/kgCOD,与传统活性污泥 (CAS) 相比下降了93%以上.
- 成功地将异质型细菌 (HB) 限制在低丰度,以维护为导向的协会中,将它们转移到内源呼吸.
结论:
- 通过封装,缺乏碳的PN位进行碳-脱,为稳定的主流部分化提供了可通用的策略.
- 这种方法可以显著降低低C/N的家用废水处理中的污泥产量.
- 该方法有效地抑制NOB并增强AOB活动,从而导致高效的化.
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