关键词: Biomass kinetic models Extracellular polymeric substances Membrane bioreactors Soluble microbial products

Mesh : Extracellular Polymeric Substance Matrix Membranes, Artificial Bioreactors / microbiology Bacteria Biomass Sewage / microbiology

来  源:   DOI:10.1016/j.watres.2023.120275

Abstract:
A mathematical correlation between biomass kinetic and membrane fouling can improve the understanding and spread of Membrane Bioreactor (MBR) technology, especially in solving the membrane fouling issues. On this behalf, this paper, produced by the International Water Association (IWA) Task Group on Membrane modelling and control, reviews the current state-of-the-art regarding the modelling of kinetic processes of biomass, focusing on modelling production and utilization of soluble microbial products (SMP) and extracellular polymeric substances (EPS). The key findings of this work show that the new conceptual approaches focus on the role of different bacterial groups in the formation and degradation of SMP/EPS. Even though several studies have been published regarding SMP modelling, there still needs to be more information due to the highly complicated SMP nature to facilitate the accurate modelling of membrane fouling. The EPS group has seldom been addressed in the literature, probably due to the knowledge deficiency concerning the triggers for production and degradation pathways in MBR systems, which require further efforts. Finally, the successful model applications showed that proper estimation of SMP and EPS by modelling approaches could optimise membrane fouling, which can influence the MBR energy consumption, operating costs, and greenhouse gas emissions.
摘要:
生物质动力学和膜污染之间的数学相关性可以提高对膜生物反应器(MBR)技术的理解和推广。特别是在解决膜污染问题。代表这一点,这篇论文,由国际水协会(IWA)膜建模和控制工作组制作,回顾了目前关于生物质动力学过程建模的最新技术,专注于模拟生产和利用可溶性微生物产品(SMP)和胞外聚合物(EPS)。这项工作的关键发现表明,新的概念方法集中在不同细菌群在SMP/EPS形成和降解中的作用。尽管已经发表了一些关于SMP建模的研究,由于高度复杂的SMP性质,仍然需要更多的信息,以促进膜污染的准确建模。EPS组很少在文献中得到解决,可能是由于有关MBR系统中生产和降解途径的触发因素的知识不足,这需要进一步的努力。最后,成功的模型应用表明,通过建模方法对SMP和EPS进行适当的估计可以优化膜污染,这会影响MBR的能耗,运营成本,和温室气体排放。
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