Development of cold-climate bioelectrochemical wastewater treatment systems

寒冷气候生物电化学废水处理系统的开发

• 批准号: RGPIN-2021-02860
• 负责人: Huang, Wendy
• 金额: $ 1.89万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=742251
• 关键词: Development; cold; climate; bioelectrochemical; wastewater

This research presents a novel approach to advance knowledge of bioelectrochemical systems (BESs) for wastewater treatment in Canada. It will involve (a) examining the utilization and transformation of contaminants in bioelectrochemical treatment using state-of-the-art characterization technologies, and (b) developing next-generation wastewater treatment technologies for applications under cold Canadian climate. While there were advances in BES for wastewater treatment in the last two decades, there is yet much to be improved towards their viable implementation and engineering application, due to the associated limitations in microbial energetics, temperature control, and substrate availability. The objective of this research is to develop innovative BES technologies for alternative wastewater treatment under cold climate, involving microbial fuel and electrolysis cells. This entails (a) assessing the bioavailability, transformation, and removal of emerging and toxic organic contaminants to BES biofilms, (b) developing high-performance cold-climate biodegradation methods based on the revealed mechanisms, and (c) applying the developed BES technologies for in-situ treatment in Canadian communities. In detail, contaminant transformation at a molecular level will be examined through investigation of the relevant variations in chemical bonds. In-situ synchrotron-based analysis methods will be developed for revealing high-resolution chemical structures of compounds present in BES at the Canadian Light Source. Approaches for analyzing organic contaminants in BES will be established through synchrotron-based Fourier transform infrared technology where the related chemical bonds will be revealed through spectra analysis. Advanced microbial communities will be engineered through cultivation of psychrophilic biofilms that maintain favourable reaction rates under cold climate. The synchrotron-based research will support the development of innovative bioelectrode materials for enhancing electron transfer, extending durability, and improving treatment efficiency under cold climates. The effects of environmental and operational factors on the performance of BES, as well as their interactive relationships, will be evaluated through multi-factorial analysis, such that improved insight of the related microbiological and biophysical mechanisms will be obtained. This research presents a novel approach for wastewater treatment through BES. The utilization and transformation of contaminants will be investigated at a molecular level to advance insight of the related physical and biological processes during contaminant removal. The revealed mechanisms will aid in the design of low-cost treatment technologies with resource recovery as alternatives to supplement the existing approaches. The developed BES will help significantly improve the wastewater treatment efficiency under cold Canadian climatic conditions.

这项研究提出了一种新的方法，可以提高对加拿大废水处理的生物电化学系统（BES）的了解。它将涉及（a）检查使用最先进的特征技术在生物电化学处理中污染物的利用和转化，以及（b）开发下一代废水处理技术，以在冷加拿大气候下应用。尽管在过去的二十年中，BES的废水处理取得了进步，但由于微生物能量学，温度控制和底物的可用性有相关的限制，因此仍有很大的改善在其可行的实施和工程应用方面有很多改善。这项研究的目的是在寒冷的气候下开发用于替代废水处理的创新BE技术，涉及微生物燃料和电解细胞。这需要（a）评估新兴和有毒的有机污染物对BES生物膜的生物利用度，转化和去除，（b）基于揭示的机制开发高性能冷气候生物降解方法，以及（c）将发达的BES技术应用于加拿大canadian社区的内在治疗。 详细说明，将通过研究化学键的相关变化来检查分子水平的污染物转化。将开发基于原位同步加速器的分析方法，用于揭示加拿大光源中存在的化合物的高分辨率化学结构。在BES中分析有机污染物的方法将通过基于同步加速器的傅立叶变换红外技术建立，其中将通过光谱分析揭示相关的化学键。先进的微生物群落将通过在寒冷气候下保持有利反应率的良好反应速率的培养来设计。基于同步加速器的研究将支持创新的生物电极材料的开发，以增强电子传输，扩展耐用性并在寒冷的气候下提高治疗效率。环境和操作因素对BES及其互动关系的性能的影响将通过多因素分析进行​​评估，从而改善对相关微生物和生物物理机制的见解。这项研究为通过BES提供了一种新颖的废水处理方法。污染物的利用和转化将在分子水平上研究，以提高对污染物去除过程中相关物理和生物过程的见解。揭示的机制将有助于设计低成本治疗技术，并以资源恢复为补充现有方法的替代方法。在寒冷的气候条件下，开发的BES将有助于显着提高废水处理效率。