增强的生物废水处理,补充了初级污泥的无氧发酵液
Lin Li1, Qiqi Liao1, Caihong Liu1
1Key laboratory of the Three Gorges Reservoir Region's Eco-environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, PR China.
Journal of environmental management
|October 6, 2023
概括
使用初级污泥发酵液作为废水处理中的碳来源,增强了生物和的去除. 这种可持续的方法被证明是有效的,丰富了有益的微生物群落,以改善废水质量.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 水处理 处理水的方法
背景情况:
- 传统的废水处理依赖于外部碳来源,以加强营养物质的去除.
- 初级污泥发酵为生物营养物去除过程提供了潜在的现场,可持续的碳来源.
研究的目的:
- 评估初级污泥发酵液作为废水处理反转无氧无氧氧 (A2/O) 反应堆中的碳来源的有效性.
- 将其性能与商业碳来源 (如酸和葡萄糖) 进行比较,重点关注营养物质的去除和微生物社区动态.
主要方法:
- 一个倒置的A2/O反应堆使用三个不同的碳来源运行:初级污泥发酵液,酸和葡萄糖.
- 通过测量化学氧气需求 (COD),和去除效率来评估废水处理性能.
- 进行了微生物社区分析,以确定主导类和特定的功能性微生物,包括非化积累生物 (PAO).
主要成果:
- 所有的碳来源都实现了类似的COD去除率,符合排放标准.
- 初级污泥发酵液和酸与葡萄糖相比,表现出更高的去除能力.
- 发酵液产生了最高的生物去除效率,废水含量接近排放限制.
- 微生物分析显示,在发酵液处理中,蛋白质细菌和关键PAO属 (Dechloromonas,未分类_f__Rhodocyclaceae) 的丰富.
- 预计对于和去除至关重要的酶在发酵液中更为丰富.
结论:
- 初级污泥发酵液是一种可行的和有效的碳来源,可以增强A2/O反应堆中的营养物质去除,特别是生物去除.
- 这种可持续的方法促进了专门微生物群落的生长,从而提高了废水处理性能.
- 使用发酵液为商业碳来源提供了一个环保的替代方案,为废水管理中的循环经济原则做出了贡献.
相关概念视频
Environmental Applications of Microorganisms
34
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...
34
Bioremediation
18.7K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.7K
Microbial Fermentation
39
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...
39


