城市废水处理的混合膜生物反应器中的营养物质去除性能和微生物组成分析
Kamran Tari1, Mohammad Reza Samarghandi2, Reza Shokoohi3
1Department of Environmental Health Engineering, School of Public Health, North Khorasan University of Medical Sciences, Bojnurd, Iran.
Bioprocess and biosystems engineering
|February 16, 2025
概括
这项研究表明,集成移动床膜生物反应器 (IMBMBR) 系统有效地从废水中去除营养物质,改善废水质量. 混合系统增强了微生物多样性,以便在紧的处理设施中更好地化和去除营养.
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:
- 在废水处理中去除营养物质需要大量的空气,无氧和有氧阶段的空间.
- 密集的混合处理系统通过在较小的足迹中提高营养物质去除效率来提供解决方案.
- 了解混合系统中的微生物社区相互作用对于优化性能至关重要.
研究的目的:
- 为了研究集成移动床膜生物反应器 (IMBMBR) 系统的微生物社区结构.
- 评估IMBMBR系统对城市废水中营养物质去除的影响.
- 为了将微生物社区组成与增强的营养物质去除效率相关联.
主要方法:
- 实现一个集成的移动床膜生物反应器 (IMBMBR) 系统.
- 在生物反应器内分析微生物社区结构.
- 对营养物质去除的关键性能指标的监测 (COD,BOD5,氨,酸盐).
主要成果:
- IMBMBR系统显著改善了废水质量.
- 获得了高的去除效率:91%的COD,95%的BOD5,99%的氨和24%的化物.
- 观察到蛋白质菌,细菌菌和尼特洛斯皮拉的多样性和丰富性增加,增强了化.
结论:
- IMBMBR系统是一种有效的营养去除过程,符合严格的废水质量标准.
- 增强的微生物群落,包括氨氧化细菌 (AOB) 和氧化细菌 (NOB),推动了改善的营养物质去除.
- IMBMBR为现有的废水处理厂提供了节省空间的升级.
相关概念视频
Environmental Applications of Microorganisms
1.5K
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...
1.5K
Microbial Mats
59
Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
59
Microbial Bioremediation of Uranium
71
Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella,...
71
Microbial Bioremediation of Hydrocarbons
83
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
83
Bioreactor Design and Operational System
140
Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
140
Bioreactor Controls-I
72
Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly...
72


