在食品废弃物消化剂处理的部分化/Anammox过程中提高了微生物兼容性和颗粒稳定性
Jiayao Ding1, Yunzhi Qian1, Xuanhui Lv1
1School of Environment and Spatial Informatics, China University of Mining & Technology, Xuzhou, 221116, China.
Journal of environmental management
|March 10, 2026
概括
这项研究稳定了食品废物消化剂处理的单阶段部分化/Anammox工艺. 调整载率的策略有效抑制了氧化的细菌,提高了去除效率.
科学领域:
- 环境微生物学环境微生物学
- 废水处理工程 废水处理工程
- 生物地质化学循环是什么
背景情况:
- 单阶段部分化/亚纳摩克斯 (PN/A) 工艺对于去除至关重要,但面临微生物失衡的挑战,特别是氧化细菌 (NOB) 的增殖.
- 食品废弃物消化剂 (FWD) 由于自由氨 (FA) 和有机物质的低含量,因此存在独特的处理挑战,这些物质可以抑制阿纳摩克斯细菌 (AnAOB) 并促进NOB和脱细菌 (DNB).
- 无法控制的NOB生长导致工艺不稳定,减少了去除效率 (NRE).
研究的目的:
- 调查食品废弃物消化剂 (FWD) 单阶段PN/A工艺的处理效率.
- 开发和评估通过抑制NOB扩散来稳定PN/A过程的策略.
- 评估操作调整对微生物群落结构和去除性能的影响.
主要方法:
- 使用气体提升反应堆,在持续的流入和通风下持续处理FWD.
- 实施了一项基于废水氨 (NH4+-N) 和自由氨 (FA) 度逐步调整载率 (NLR) 的战略,以控制NOB.
- 采用扫描电子显微镜 (SEM) 来分析污泥形态和微生物群落转移.
主要成果:
- 最初的治疗显示了NOB的快速扩散,并且由于FA抑制不足和有机物促进DNB,NRE降低到53.49%.
- 开发的战略成功地通过增加入的NH4+-N来抑制NOB,保持废水NH4+-N和FA分别在150 mg/L和20 mg/L,将NRE提高到73.56%.
- SEM分析显示,细菌从细丝状细菌转移到密集的颗粒型污泥,表明AnAOB活动恢复,Nitrospira显著下降,并从Ca转移到主导AnAOB. 布罗卡迪亚飞往加拿大 这就是Kuenenia.
结论:
- 基于废水NH4+-N和FA的NLR逐步调整是稳定FWD单阶段PN/A处理的有效策略.
- 这种方法成功地抑制了NOB,促进了AnAOB活动,并提高了整体的去除效率,而不需要外部COD添加.
- 该研究表明,使用Anammox工艺与优化操作控制实现FWD稳定去除的可行性.
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