Isabel San-Martín María, Mateos Raúl, Carracedo Begoña, Escapa Adrián, Morán Antonio
Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), Universidad de León, Avda. de Portugal 41, Leon 24009, Spain.
Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), Universidad de León, Avda. de Portugal 41, Leon 24009, Spain; Department of Electrical Engineering and Automatic Systems, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain.
J Biosci Bioeng. 2018 Dec;126(6):758-763. doi: 10.1016/j.jbiosc.2018.06.008. Epub 2018 Jul 2.
This study aims to characterize the performance of a 150 L bioelectrochemical system-based plant, during the simultaneous carbon and nitrogen removal from several waste streams of wastewater treatment plants. The bioelectrochemical system (BES) contained five electrode pairs (operated hydraulically and electrically in parallel) and was fed with either wastewater, centrate (nutrient-rich liquid stream produced during the dewatering of digested biomass), or a mixture of both over 63 days, with a hydraulic retention time of one day. Total organic carbon and total nitrogen removal rates averaged 80% and 70%, respectively, with a specific energy consumption of 0.18 kWh·m (BES + ancillary equipment). This work also underlines the challenges of using BES for nitrogen removal, highlighting the limitations of the current design, and suggesting some strategies for improvement.
本研究旨在表征一个基于150升生物电化学系统的装置在同时去除污水处理厂多种废水流中的碳和氮时的性能。该生物电化学系统（BES）包含五对电极（以液压和电气方式并联运行），在63天内用废水、浓缩液（消化生物质脱水过程中产生的富含营养的液体流）或两者的混合物进料，水力停留时间为一天。总有机碳和总氮去除率平均分别为80%和70%，特定能耗为0.18 kWh·m（BES + 辅助设备）。这项工作还强调了使用BES进行氮去除的挑战，突出了当前设计的局限性，并提出了一些改进策略。
