高的有机体积载荷率引发了废水生物营养去除系统中的异质化
Mengya Guo1, Xiangnan Zheng1, Shaokui Zheng1
1School of Environment, MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation, Beijing Normal University, Beijing 100875, China.
Bioresource technology
|February 3, 2025
概括
较高的化学氧需求 (COD) 加载率显著提高了废水处理中的异质化. 这一过程通过增加细菌活动,增强无氧/微空气系统中的氨去除.
科学领域:
- 环境微生物学 环境微生物学
- 水处理工程水处理工程
- 生物化学工程 生物化学工程
背景情况:
- 生物营养去除系统对于污水处理至关重要.
- 异质化为氨去除提供了一个有前途的途径.
- 优化异质化条件对于系统效率至关重要.
研究的目的:
- 为了研究化学氧气需求 (COD) 体积负载率 (CODLR) 对异构化的影响.
- 在不同的CODLR下量化异质化对氨氧化的贡献.
- 了解有机碳供应在刺激异质化中的作用.
主要方法:
- 实验室规模的无氧/微空气生物营养去除系统.
- 对氨氧化活动和质量平衡的分析.
- 在不同的CODLR水平 (0.501.50公斤COD m-3 d-1) 上,氨氧化细菌群体的表征.
主要成果:
- 增加的CODLR显著增强了潜在的异质化活性.
- 异质化对总氨氧化的贡献高达21%.
- 平衡证实了异构化细菌的作用,从4%增加到12%,CODLR更高.
结论:
- 较高的CODLR对于触发和增强污水处理中的异质化至关重要.
- 在微空气区域中足够的有机碳供应刺激了异构化.
- 这项研究验证了异质化作为在先进的废水处理中去除氨的关键过程.
更多相关视频
11:31Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation
Published on: July 13, 2012
33.7K
08:05Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
6.1K
相关概念视频
Overview of Nitrogen Metabolism
7.8K
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 largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
7.8K
The Nitrogen Cycle
51.5K
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...
51.5K
Bioremediation
18.1K
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.
18.1K
