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首页> 美国卫生研究院文献>Bioengineering >Up-Flow Anaerobic Sludge Blanket (UASB) Technology for Energy Recovery: A Review on State-of-the-Art and Recent Technological Advances
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Up-Flow Anaerobic Sludge Blanket (UASB) Technology for Energy Recovery: A Review on State-of-the-Art and Recent Technological Advances

机译：用于能量回收的上游厌氧污泥毯（UASB）技术：最新技术和最新技术进展的回顾

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Up-flow anaerobic sludge blanket (UASB) reactor belongs to high-rate systems, able to perform anaerobic reaction at reduced hydraulic retention time, if compared to traditional digesters. In this review, the most recent advances in UASB reactor applications are critically summarized and discussed, with outline on the most critical aspects for further possible future developments. Beside traditional anaerobic treatment of soluble and biodegradable substrates, research is actually focusing on the treatment of refractory and slowly degradable matrices, thanks to an improved understanding of microbial community composition and reactor hydrodynamics, together with utilization of powerful modeling tools. Innovative approaches include the use of UASB reactor for nitrogen removal, as well as for hydrogen and volatile fatty acid production. Co-digestion of complementary substrates available in the same territory is being extensively studied to increase biogas yield and provide smooth continuous operations in a circular economy perspective. Particular importance is being given to decentralized treatment, able to provide electricity and heat to local users with possible integration with other renewable energies. Proper pre-treatment application increases biogas yield, while a successive post-treatment is needed to meet required effluent standards, also from a toxicological perspective. An increased full-scale application of UASB technology is desirable to achieve circular economy and sustainability scopes, with efficient biogas exploitation, fulfilling renewable energy targets and green-house gases emission reduction, in particular in tropical countries, where limited reactor heating is required.
机译：上流式厌氧污泥层反应器（UASB）属于高速率系统，与传统的消化池相比，能够在减少的水力停留时间下进行厌氧反应。在这篇综述中，对UASB反应器应用的最新进展进行了严格的总结和讨论，并概述了未来可能进一步发展的最关键方面。除了对可溶性和可生物降解的底物进行传统的厌氧处理外，由于对微生物群落组成和反应堆流体动力学的深入理解以及强大的建模工具的运用，研究实际上也集中在难处理和缓慢降解的基质的处理上。创新的方法包括使用UASB反应器除去氮，以及生产氢气和挥发性脂肪酸。目前正在广泛研究在同一地区可利用的互补底物的共消化，以提高沼气产量并从循环经​​济的角度提供连续的平稳运行。特别重要的是分散处理，能够为当地用户提供电和热，并可能与其他可再生能源整合。从毒理学的角度来看，适当的预处理应用可提高沼气产量，同时需要进行连续的后处理才能满足所需的废水标准。为了实现循环经济和可持续发展范围，有效地利用沼气，实现可再生能源目标和减少温室气体排放，特别是在要求有限反应堆供热的热带国家中，需要增加UASB技术的全面应用以实现循环经济和可持续性范围。

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