Chemical, Biological and Environmental Engineering Department, Escola d'Enginyeria, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain.
Chemical, Biological and Environmental Engineering Department, Escola d'Enginyeria, Universitat Autònoma de Barcelona, E-08193, Bellaterra, Barcelona, Spain; Miguel Torres S.A., Miquel Torres i Carbó 6, 08720, Villafranca del Penedès, Barcelona, Spain.
Bioresour Technol. 2022 Jan;343:126080. doi: 10.1016/j.biortech.2021.126080. Epub 2021 Oct 7.
This case study is part of a circular bioeconomy project for a winery company aiming to integrate a microalgae-based system within the existing facilities of the winery WWTP, promoting nutrient recovery and transformation into valuable products and bioenergy. Microalgae were used for wastewater treatment, removing N-NH (97%) and P-PO (93%). A pilot anaerobic reactor was used for batch anaerobic mono-digestion of secondary sludge (WAS) and for co-digestion of WAS and algal biomass. The methane yield using WAS from two different wine production seasons was 155.4 and 132.9 NL CH kg VS. Co-digestion led to the highest methane yield (225.8 NL CH kg VS). The application of the bio-wastes for fertilization was assessed through plant growth bioassays: mono- and co-digestion digestates and dry algal biomass enhanced plant biomass accumulation (growth indexes of 163%, 155% and 121% relative to those of the control - commercial amendment, respectively), demonstrating a lack of phytotoxicity.
本案例研究是一家酿酒公司循环生物经济项目的一部分，该项目旨在将基于微藻的系统整合到酿酒厂 WWTP 的现有设施中，促进营养物质的回收和转化为有价值的产品和生物能源。微藻用于处理废水，去除 N-NH（97%）和 P-PO（93%）。采用一个小型厌氧反应器分批进行二级污泥（WAS）的厌氧单消化和 WAS 与藻生物质的共消化。使用来自两个不同葡萄酒生产季节的 WAS 的甲烷产率分别为 155.4 和 132.9 NL CH kg VS。共消化导致最高的甲烷产率（225.8 NL CH kg VS）。通过植物生长生物测定评估了生物废物的施肥应用：单消化和共消化的消化物以及干藻生物质增强了植物生物量的积累（相对于对照-商业添加剂，生长指数分别为 163%、155%和 121%），表明没有植物毒性。
