相关实验视频

Updated: Jun 9, 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

与膜生物反应器相结合的典型异构和自身移除过程:污染行为和特征的比较

Qiushan Liu¹, Tong Zhou¹, Yuru Liu¹

¹National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Ping Leyuan No. 100, Beijing 100124, China.

|October 25, 2024

概括

部分化-安纳摩克斯 (PNA) 膜生物反应器 (MBRs) 由于微生物代谢物而显示出比无氧-氧 (AO) MBRs更严重的膜污染. 水友膜修饰对于PNA-MBR系统来减轻污染至关重要.

科学领域:

环境科学环境科学
微生物学微生物学
化学工程是化学工程的重要组成部分.

背景情况:

膜生物反应器 (MBR) 对于废水处理至关重要,但膜污染仍然是一个挑战.
关于微生物代谢物在MBR中去除过程中膜污染中的作用的研究有限.

研究的目的:

为了比较无氧-氧 (AO) 和部分化-anammox (PNA) MBR过程之间的膜污染行为.
研究微生物代谢物对这些MBR系统中的膜污染的影响.

主要方法:

在相同的载率和MLSS度下对AO-MBR和PNA-MBR进行比较分析.
监测跨膜压力 (TMP) 以评估污染.
对超浮性和细胞外聚合物质 (EPS) 的化学组成和结构性质进行分析.

主要成果:

与AO-MBR相比,PNA-MBR表现出明显更严重的膜污染,由更高的TMP表明.
PNA-MBR超含有较高度的蛋白质,多糖和低分子量湿性物质.
来自PNA-MBR污泥的EPS显示蛋白质结构较宽松,疏水性增加,含量更高,有助于污染.

结论:

微生物代谢物,特别是水的有机物和由*Candidatus* Brocadia和*Chloroflexi*等细菌产生的湿性物质,加剧了PNA-MBRs中的膜污染.
建议对水友膜进行修改,以减轻PNA-MBR系统中严重的污染.

关键词:

无毒有毒去除的过程.膜生物反应器是一个膜生物反应器.膜污染的污染膜污染微生物社区的微生物社区.部分化anammox的去除过程.

更多相关视频

Three-Dimensionally Printed Microfluidic Cross-flow System for Ultrafiltration/Nanofiltration Membrane Performance Testing

Three-Dimensionally Printed Microfluidic Cross-flow System for Ultrafiltration/Nanofiltration Membrane Performance Testing

Published on: February 13, 2016

Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater

Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater

Published on: March 6, 2017

相关概念视频

Metabolism of Chemolithotrophs

Metabolism of Chemolithotrophs

Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.

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.

Environmental Applications of Microorganisms

Environmental Applications of Microorganisms

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...