基于集成固膜活性污泥 (IFAS) 的无氧氨氧化 (Anammox) 工艺的研究进展
Guang Li1, Yunyong Yu1, Xingyu Li1
1Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun, China.
Environmental microbiology reports
|March 6, 2024
概括
集成的固膜活性污泥 (IFAS) 与无氧氨氧化 (Anammox) 结合,可以改善废水处理. 本综述详细介绍了IFAS-Anammox的进展情况,限制因素以及改善脱化的未来方向.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 集成固定膜激活泥 (IFAS) 通过结合悬浮生长和附着生物膜,提供先进的废水处理.
- 将IFAS与无氧氧化剂 (Anammox) 结合起来,可以显著提高生物脱效率.
研究的目的:
- 审查IFAS与Anammox过程相结合的研究进展.
- 确定限制IFAS-Anammox技术发展的因素.
- 为未来的研究和工程实践提供前景.
主要方法:
- 总结了IFAS与Anammox相结合的研究,包括部分化Anammox,同时部分化Anammox和脱 (SPOR),以及部分脱Anammox.
- 分析了操作参数的影响,如溶解氧气,碳源,污泥保留时间和温度.
- 研究了微生物群落和酸盐氧化细菌抑制作用.
主要成果:
- IFAS-Anammox工艺显示出改善废水中去除的潜力.
- 影响IFAS-Anammox业绩的关键因素包括溶解氧,碳可用性,SRT和温度.
- 微生物社区结构和特定的抑制策略对于优化IFAS中的Anammox至关重要.
结论:
- IFAS-Anammox代表了高效废水处理的尖端技术.
- 需要进一步的研究来克服运营挑战,并优化微生物联盟.
- 未来的方向包括精炼过程控制和探索大规模的工程应用.
相关概念视频
Anoxygenic Photosynthesis
1.7K
Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...
1.7K
Metabolism of Chemolithotrophs
1.2K
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.
1.2K
Inorganic Nitrogen Assimilation
826
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
826
Acid Mine Drainage
64
Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten...
64
Bioreactor Design and Operational System
99
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...
99
Bioreactor Controls-II
57
In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the...
57


