Microbial electrochemical fluidized bed reactor (ME-FBR): An energy-efficient advanced solution for treating real brewery wastewater with different initial organic loading rates

被引：8

作者：

Asensio, Y. ^{[1
]}

Llorente, M. ^{[1
]}

Tejedor-Sanz, S. ^{[1
]}

Fernandez-Labrador, P. ^{[2
]}

Manchon, C. ^{[3
]}

Ortiz, J. M. ^{[3
]}

Ciriza, J. F. ^{[2
]}

Monsalvo, V ^{[4
]}

Rogalla, F. ^{[4
]}

Esteve-Nunez, A. ^{[1
,3
]}

机构：

[1] Univ Alcala, Dept Chem Engn, Ctra Madrid Barcelona,Km 33,6, Madrid 28871, Spain

[2] Mahou San Miguel, C Titan 15, Madrid 28045, Spain

[3] IMDEA WATER Inst, Punto Com 2, Madrid 28805, Spain

[4] FCC AQUALIA, Dept Innovat & Technol, Avda Camino Santiago 40, Madrid, Spain

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2021年 / 9卷 / 06期

关键词：

Fluidized bed; Wastewater treatment; Electrode nature; Electroactive bacteria; Microbial electrochemical technologies; BIOELECTROCHEMICAL SYSTEMS; FUEL-CELLS; GEOBACTER-SULFURREDUCENS; ELECTROLYSIS CELLS; CARBON-DIOXIDE; SCALING-UP; PERFORMANCE; ELECTRODES; FABRICATION; POLLUTANTS;

D O I：

10.1016/j.jece.2021.106619

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Electroactive bacteria are able to evolve strategies to transfer electrons with electroconductive materials. The boundaries of using electroactive bacteria to scale up wastewater treatments indicate the necessity to evaluate some of the most critical design and operational aspects. In this context, we have explored a concept so-called microbial electrochemical fluidized bed reactor (ME-FBR) for optimizing treatment of brewery wastewater by evaluating the anode potential, from + 200 mV to + 800 mV (vs. Ag/AgCl, 3 M reference electrode), in a vast range of Organic Loading Rate (OLR;0.23 kg COD/m(3) d(-1) to 23.60 kg COD/m(3) d(-1)). Furthermore, the impact of the cathode nature (stainless steel mesh and sponge) and the electroconductive bed volume was evaluated regarding the wastewater treatment capacity. This manuscript reveals a positive impact on the ME-FBR capacity for treating wastewater: COD removal (87%) and nutrient removal (66% of TN and 75% of TP). Finally, the treatment energy consumption was always under 0.4 kWh Kg CODremoved-1 which was 10-fold lower than the required energy for aerating bioreactors from conventional activated sludge or membrane reactors.

引用

页数：8