INRAE, Univ Montpellier, Bio2E, 102 avenue des Etangs, 11100 Narbonne, France; ELSA Research Group, Montpellier, France.
ELSA Research Group, Montpellier, France; INRAE, Univ Montpellier, LBE, Narbonne, France.
Bioresour Technol. 2021 Jan;319:124204. doi: 10.1016/j.biortech.2020.124204. Epub 2020 Oct 1.
The Life Cycle Assessment (LCA) methodology was applied to assess the environmental feasibility of a novel wastewater treatment technology based on oxygenic photogranules (OPG) biomass in comparison to a conventional activated sludge (CAS) system. LCA using laboratory scale experimental data allowed for eco-design of the process during the early stage of process development at laboratory scale. Electricity consumption related to artificial lighting, the fate of the generated biomass (renewable energy and replacement of mineral fertilizer), and the nitrogen flows in the OPG system were identified as major contributors to the potential environmental impact of the OPG treatment system. These factors require optimization in order to reduce the environmental impact of the overall OPG system. Nonetheless, the environmental impact of a non-optimized OPG scenario was generally lower than for a CAS reference system. With an optimization of the artificial lighting system, an energy neutral treatment system may be within reach.
生命周期评估 (LCA) 方法被应用于评估一种新型基于好氧光颗粒 (OPG) 生物量的废水处理技术的环境可行性，与传统的活性污泥 (CAS) 系统相比。使用实验室规模的实验数据进行 LCA 可以在实验室规模的工艺开发早期阶段进行工艺的生态设计。与人工照明相关的电力消耗、产生的生物量的命运（可再生能源和矿物肥料的替代）以及 OPG 系统中的氮流动被确定为 OPG 处理系统潜在环境影响的主要因素。为了降低整个 OPG 系统的环境影响，这些因素需要进行优化。尽管如此，未优化的 OPG 方案的环境影响通常低于 CAS 参考系统。通过优化人工照明系统，可能实现能量中性处理系统。
