ABSTRACT

The present study reports a detailed life cycle assessment and cost–benefit analysis of a commercially viable Internal-Stack-Trickling Bio-Electrochemical Reactor (IS-TrickBER). IS-TrickBER used wastewater as a feedstock and converted that wastewater through electrochemical methods into low-grade fertilizer and produced electricity. IS-TrickBER was observed for its performance in terms of power output and wastewater treatment. IS-TrickBER exhibited up to 4.2 Wh net energy yield while treating 84.84L wastewater per day along with 92.17% COD removal and 38.23% Columbic efficiency during the operational run with real municipal wastewater. Based on daily net energy yield, up to 1457.6Wh yearly net energy yield can be expected. A comprehensive start-to-end life cycle assessment study associated with the manufacturing, and operational phases of IS-TrickBER was also conducted to ascertain its impact on the environment. The environmental impact through air emissions during the manufacturing stage can be minimized by changing the plastic balls used as packing material in the reactor. A detailed cost–benefit analysis was also conducted to understand its economic viability. Cost–benefit analysis of IS-TrickBER, based on net energy yield, shows that IS-TrickBER could compensate its installation cost within a few years. IS-TrickBER performed well in eliminating the chemical load of wastewater and simultaneous electricity generation. Due to its scalability, compactness, and low maintenance, IS-TrickBER can be a suitable candidate in real-time wastewater treatment.

摘要

本研究报告了商业上可行的内部堆叠滴流生物电化学 R的详细生命周期评估和成本效益分析反应器（IS-TrickBER）。IS-TrickBER 以废水为原料，通过电化学方法将废水转化为劣质肥料并发电。IS-TrickBER 因其在功率输出和废水处理方面的性能而受到关注。IS-TrickBER 在处理实际市政废水的运行过程中，每天处理 84.84 升废水以及 92.17% 的 COD 去除率和 38.23% 的库仑效率时，净能量产量高达 4.2 Wh。根据每日净能源产量，预计每年净能源产量高达 1457.6Wh。还进行了与 IS-TrickBER 的制造和运营阶段相关的全面的从开始到结束的生命周期评估研究，以确定其对环境的影响。通过更换反应器中用作填充材料的塑料球，可以最大限度地减少制造阶段空气排放对环境的影响。还进行了详细的成本效益分析，以了解其经济可行性。基于净能量产出的 IS-TrickBER 成本效益分析表明，IS-TrickBER 可以在几年内补偿其安装成本。IS-TrickBER 在消除废水的化学负荷和同时发电方面表现良好。由于其可扩展性、紧凑性和低维护性，IS-TrickBER 可以成为实时废水处理的合适候选者。基于净能量产量，表明 IS-TrickBER 可以在几年内补偿其安装成本。IS-TrickBER 在消除废水的化学负荷和同时发电方面表现良好。由于其可扩展性、紧凑性和低维护性，IS-TrickBER 可以成为实时废水处理的合适候选者。基于净能量产量，表明 IS-TrickBER 可以在几年内补偿其安装成本。IS-TrickBER 在消除废水的化学负荷和同时发电方面表现良好。由于其可扩展性、紧凑性和低维护性，IS-TrickBER 可以成为实时废水处理的合适候选者。