相关实验视频

Updated: Jun 2, 2025

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities

Published on: December 25, 2015

秋季氨波动对移动床生物膜反应堆冬季化的影响

Yanan Ren¹, Jan A Oleszkiewicz¹, Miguel Uyaguari²

¹Department of Civil Engineering, University of Manitoba, 75 Chancellors Circle, Winnipeg, Manitoba R3T 5V6, Canada.

The Science of the total environment

|January 16, 2025

概括

保持秋季氨水平对于移动床生物膜反应堆 (MBBR) 的冬季有效化至关重要. 秋季更高的氨的可用性导致冬季更好的氨去除和冷气候中的生物膜性能.

科学领域:

环境工程环境工程
微生物学微生物学
废水处理废水处理

背景情况:

废水处理中的化是对温度敏感的,在寒冷的气候中构成挑战.
移动床生物膜反应器 (MBBR) 用于化,但它们的全年性能,特别是在冬季,需要优化.
季节性氨的波动会影响生物膜活性和整体处理效率.

研究的目的:

调查季节性氨波动对冬季化在试点规模化MBBR的影响.
评估秋季氨在提高冬季化性能方面的作用.
确定关键因素并开发模型,以优化MBBR在寒冷气候中的性能.

主要方法:

在两年的试点规模研究中,在海后的设置中使用化MBBR.
监测氨去除效率,表面氨去除率 (SARR) 和生物膜特性.
微生物群落转移的分析,化细菌 (Nitrosomonadaceae,Nitrospiraceae) 的鉴定.
开发线性模型,将冬季的氨去除与流入的氨和温度的比率联系起来.

主要成果:

具有足够秋季氨的反应堆显示冬季氨去除 (97.2%) 和SARR (0.69gN/m2·d) 与氨饥饿 (63.7%的去除,0.35gN/m2·d) 相比显著更高.
第二年的生物膜更薄,更密集,生物质度更高,表明活动有所改善.
在微生物群体中观察到季节性变化和多样性丧失,鉴定出属于Nitrosomonadaceae和Nitrospiraceae的化物.
建模表明,尽量减少秋季低氨期,最大限度地提高冬季前的氨度,可以提高冬季的性能.

结论:

秋季氨的可用性对于积累足够的活性生物质至关重要,以便在MBBR中进行强大的冬季化.
优化秋季养策略,特别是保持足够的氨度,对于冷气候废水处理至关重要.
该研究为提高生物基化系统全年性能提供了实用见解.

关键词:

影响氨的可用性.移动床生物薄膜反应堆 (MBBR) 的使用季节性微生物变化冬季化过程中的化.

更多相关视频

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Published on: March 21, 2016

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

相关概念视频

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...

The Nitrogen Cycle

The Nitrogen Cycle

Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...