创新:在超热友性有氧发酵过程中,污水污泥的化三阶段
Xin Li1, Xinru Zhong1, Zao Yang1
1School of Environmental Science and Engineering. Tongji University, Shanghai, 200092, PR China.
Environmental research
|October 8, 2023
概括
超热友性有氧发酵 (HAF) 通过增强有机物降解和湿土合成,显著加快了污水污泥的湿化. 这一过程涉及前体形成和复杂聚合物发展的不同阶段,性能优于传统方法.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 土壤科学 土壤科学
背景情况:
- 与传统的有氧发酵 (CAF) 相比,在污水污泥化中对高热性有氧发酵 (HAF) 的理解有限.
- 需要阐明HAF驱动的化所涉及的机制和阶段.
研究的目的:
- 为了比较HAF和CAF之间的有机降解,前体形成,功能组,细菌群体和湿土合成机制.
- 识别和描述HAF中新的谦卑阶段.
主要方法:
- 对HAF (>80°C) 和CAF过程进行实验比较.
- 对有机物降解,氨,水溶性有机碳和,纤维素,半纤维素,降解糖和氨基酸的分析.
- 湿土性质的表征,包括酸C含量和酸 (HA) 和酸 (FA) 的芳香度.
主要成果:
- HAF迅速降解有机物,在第一阶段完成了68%,并且显著增加了氨,水溶性有机碳和总.
- 纤维素和半纤维素降解在HAF中增强,降低糖和有效纤维素降解率显著增加.
- HAF III 阶段显示阿里尔 C 的增加,湿土的聚合,HA 和 FA 的芳香化,表明复杂的有机宏分子聚合物的形成.
结论:
- 高热性条件 (>80°C) 和细菌的占主导地位通过快速的有机物降解加速了污泥的湿化.
- 糖胺凝结被确定为HAF中主要的化机制.
- 这项研究提供了对HAF过程中化合成的三个阶段的新见解,扩大了对该过程的当前理解.
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