使用菌根颗粒将氨氧化细菌固定:化的制备,特征和应用
Ming Chen1, Lei Jin1, Xiaoying Liu2
1School of Civil Engineering, Southeast University, Nanjing 210096, China.
Bioresource technology
|January 17, 2025
概括
菌根颗粒有效地使有氧颗粒污泥中的氨氧化细菌 (AOB) 不动,提高了化性能. 这些复合材料在实际废水处理应用中表现出卓越的稳定性和效率.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 污水处理 污水处理 污水处理
背景情况:
- 氨氧化细菌 (AOB) 对于废水处理中的化至关重要.
- 有氧颗粒污泥 (AGS) 工艺是有效的,但可以通过AOB稳定性来限制.
- 开发有效的AOB固定方法是提高治疗效率的关键.
研究的目的:
- 调查使用Cladosporium菌根颗粒作为固定AOB的载体.
- 为了评估菌根颗粒/AOB复合材料的化性能和稳定性.
- 为了比较固定AOB与自由AOB在废水处理中的有效性.
主要方法:
- 在氨负载增加的情况下,从AGS中快速丰富AOB.
- 克拉多斯波里亚的分离和菌株颗粒的形成.
- 丰富的AOB被固定在菌根颗粒上,形成复合材料.
- 使用静态和多重循环试验评估氨氧化率.
主要成果:
- 丰富的AOB获得了高的Nitrosomonas丰富度 (20.7%) 和酸盐积累 (> 80%).
- 菌颗粒/AOB复合材料表现出增强的细胞外聚合物质 (EPS) 和微生物殖民.
- 复合材料的最大氨氧化率为17.7 mg/gMLVSS·h),明显高于自由AOB (8.5 mg/gMLVSS·h)).
- 复合材料表现出极好的稳定性,在多个循环中保持96.6%的氨氧化.
结论:
- 菌根颗粒作为有效的生物相容载体,用于固定AOB.
- 与传统方法相比,开发的复合材料提供了更好的化性能和稳定性.
- 这些发现表明,对于实用且持久的废水处理系统来说,这是一个有希望的方法.
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