相关实验视频

Updated: Jun 19, 2025

Author Spotlight: Scaling Microalgal Biotechnology for Enhanced Biomethane Production

Author Spotlight: Scaling Microalgal Biotechnology for Enhanced Biomethane Production

Published on: March 22, 2024

在建筑湿地中优化去除以实现低C/N比率的废水处理:来自发酵液体利用的见解

Guosheng Zhang¹, Qingju Hao², Shiwen Xu¹

¹Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), College of Resources and Environment, Southwest University, Chongqing 400715, China.

|July 25, 2024

概括

甘包油发酵液 (SBFL) 通过提供关键的碳来源,有效地增强了建筑湿地 (CWs) 的除. 与传统的碳来源相比,这种方法还显著减少了温室气体排放.

科学领域:

环境工程环境工程
水处理技术水处理技术
生物修复是一种生物修复.

背景情况:

建筑湿地 (CWs) 经常面临因废水中碳比率 (C/N) 较低而造成的低效的除挑战.
需要额外的碳来源来增强CW中的脱过程.

研究的目的:

研究甘包油发酵液 (SBFL) 作为间歇空气化CW中补充碳来源的有效性,以改善去除.
评估SBFL对不同C/N比率的去除效率和温室气体 (GHG) 排放的影响.
为了比较SBFL与糖糖作为CW的碳来源.

主要方法:

使用间歇性通风的CW与SBFL作为额外的碳来源.
监管影响性C/N比率,以评估它们对去除和温室气体排放的影响.
量化物种 (NO3--N,NH4+-N) 的去除效率.
测量了氧化 (N2O) 和甲 (CH4) 的排放量.
分析了大量的脱基因 (nirK, nirS, nosZ) 和脱细菌的数量.

主要成果:

与糖糖相比,SBFL显著增强了脱和NO3-N去除.
与非气化系统相比,间歇性气化CW显示出更好的NH4+-N去除效率.
最高的总去除效率 (98.3%) 在C/N比率为5的SBFL中在间歇空气化CW中实现.
与糖糖相比,SBFL的添加减少了17.8%-43.7%的N2O排放和CH4排放.
具有SBFL的CWs表现出更高的脱基因和细菌的丰度.

结论:

SBFL是一种可行的和有效的碳来源,用于增强CW中的去除.
采用SBFL可以提高去除效率,同时减轻温室气体排放.
间歇性通风进一步提高了在使用SBFL的CW中去除的性能.

关键词:

无氧发酵是无氧发酵的方法.脱化性能表现脱化性能表现温室气体的温室气体是什么间歇性通风间歇性通风间歇性通风植物生物质碳源是植物生物质的碳源.

更多相关视频

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation

Published on: July 13, 2012

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

相关概念视频

Bioremediation

Bioremediation

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.

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...