IRTA, GIRO Joint Research Unit IRTA-UPC, Torre Marimon, E-08140, Caldes de Montbui, Barcelona, Spain.
Bioresour Technol. 2016 Sep;216:362-72. doi: 10.1016/j.biortech.2016.05.085. Epub 2016 May 24.
The combination of the anaerobic digestion (AD) process with a microbial electrolysis cell (MEC) coupled to an ammonia stripping unit as a post-treatment was assessed both in series operation, to improve the quality of the effluent, and in loop configuration recirculating the effluent, to increase the AD robustness. The MEC allowed maintaining the chemical oxygen demand removal of the whole system of 46±5% despite the AD destabilization after doubling the organic and nitrogen loads, while recovering 40±3% of ammonia. The AD-MEC system, in loop configuration, helped to recover the AD (55% increase in methane productivity) and attained a more stable and robust operation. The microbial population assessment revealed an enhancement of AD methanogenic archaea numbers and a shift in eubacterial population. The AD-MEC combined system is a promising strategy for stabilizing AD against organic and nitrogen overloads, while improving the quality of the effluent and recovering nutrients for their reutilization.
将厌氧消化（AD）工艺与微生物电解池（MEC）结合，并在后处理中采用氨汽提单元，分别进行串联和循环操作，以提高出水质量和 AD 稳定性。尽管在两倍的有机和氮负荷下 AD 失稳，但 MEC 允许整个系统的化学需氧量去除率保持在 46±5%，同时回收 40±3%的氨。在循环配置中，AD-MEC 系统有助于 AD 的恢复（甲烷产率增加 55%），并实现更稳定和强大的运行。微生物种群评估显示 AD 产甲烷古菌数量增加，真细菌种群发生转变。AD-MEC 联合系统是一种很有前途的策略，可用于稳定 AD 以抵抗有机和氮超负荷，同时改善出水质量并回收养分以供再利用。
