在生产水的生物处理方面有新的见解:预氧化为微生物社区的基质选择铺平了一条快速的途径
Jianhua Lei1, Chuanfu Zhao1, Shuhui Zhang1
1School of Civil Engineering, Shandong University, Jinan, Shandong, PR China, 250000; Laboratory of water-sediment regulation and eco-decontamination, Jinan, Shandong, PR China, 250000.
Journal of hazardous materials
|November 14, 2024
概括
这项研究使用预氧化合异质氨同化 (PHAA) 系统增强了生产的水处理. 精制的PHAA工艺实现了96.2%的总有机碳去除,并改善了微生物对有机载荷冲击的抵抗力.
科学领域:
- 环境科学 环境科学
- 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:
- 由于碳化合物和耐火有机物等复杂污染物,生产水 (PW) 处理具有挑战性.
- 现有的方法难以应对PW的高有机负载和反抗性质.
- 预氧化合异质氨同化 (PHAA) 为先进的PW处理提供了一个潜在的解决方案.
研究的目的:
- 改进一个预氧化合异质氨同化 (PHAA) 系统,以提高产生的水处理.
- 研究前氧化对微生物群落动态和有机降解效率的影响.
- 评估系统在波动的有机载荷条件下的性能,并确定降解途径.
主要方法:
- 在PHAA系统中优化催化剂选择和减少液压保留时间.
- 模拟有机载荷波动以评估系统稳定性和弹性.
- 分析微生物群落结构和碳化合物酶活性.
- 确定中长链基的潜在降解途径.
主要成果:
- 精炼的PHAA系统实现了96.2%的总有机碳 (TOC) 的稳定去除.
- 预氧化显著提高了微生物群落应对负载冲击的能力,并改善了长期的有机降解.
- 该系统有效地去除了C24以上的基,氧化前改变了微生物的基质可用性.
- 前氧化丰富了微生物的多样性,并促进了功能性微生物的积累.
结论:
- 优化的PHAA系统在生产的水处理中表现出高效率和稳定性.
- 在PW处理中,预氧化对于改善微生物适应性和整体有机降解性能至关重要.
- 这项研究提供了有关碳化合物降解途径和微生物社区因氧化前反应而发生的转变的见解.
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