一个试点规模的SNAD-MBBR工艺用于处理猪废水的无氧消化液:性能和微生物社区
Liang Zhou1,2, Fangzheng Guo2, Yongwei Jiang2
1Jiangsu Provincial Key Laboratory of Environmental Engineering, Nanjing, 210000, People's Republic of China.
Environmental science and pollution research international
|November 7, 2023
概括
这项研究成功地在用于猪废水处理的移动床生物膜反应堆 (MBBR) 中实现了同时进行部分化,亚纳摩克斯和脱 (SNAD) 过程,实现了高去除率.
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
- 生物反应器技术技术
背景情况:
- 来自猪废水的无氧消化器液体对污染构成了重大挑战.
- 有效的除对于环境保护和可持续农业至关重要.
研究的目的:
- 研究在移动床生物膜反应堆 (MBBR) 中同时进行部分化,anammox和脱 (SNAD) 过程的可行性和效率.
- 优化运营参数和确定关键的微生物群落来处理猪废水.
主要方法:
- 一个试验规模的移动床生物膜反应堆 (MBBR) 运行了95天,用于处理猪废水.
- 通过测量加载和去除率以及去除效率来监测工艺性能.
- 确定了最佳的pH值,温度和溶解氧水平.
- 微生物社区分析使用16SrRNA测序进行.
主要成果:
- 在SNAD-MBBR过程中,在1.09kg TN/m3 /day的负载速度下,实现了0.87kg TN/m3 /day的总去除率.
- 观察到氨 (92.0%) 和总 (79.7%) 的高去除效率.
- 最佳条件包括pH8.5,温度35°C,以及0.30 mg/L (SNAD1) 和0.07 mg/L (SNAD2) 的溶氧水平.
- 发现的关键的去除的细菌是Candidatus Kuenenia,Candidatus Brocadia,Nitrosomonas和Denitratisoma,其他细菌支持这些细菌.
结论:
- SNAD-MBBR工艺是一种高效,节能,具有成本效益的方法,用于从猪废水中去除.
- 该研究提供了用于工业应用的SNAD过程扩展的关键操作参数.
- 已确定的微生物联盟在具有挑战性的条件下,在有效的除中发挥着至关重要的作用.
相关概念视频
01:30Environmental Applications of Microorganisms
29
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
29
01:23Microbial Fermentation
35
Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...
35