Water resource recovery coupling microalgae wastewater treatment and sludge co-digestion for bio-wastes valorisation at industrial pilot-scale

被引：26

作者：

Avila, Romina ^{[1
]}

Justo, Alvaro ^{[1
,2
]}

Carrero, Elvira ^{[2
]}

Crivilles, Eudald ^{[2
]}

Vicent, Teresa ^{[1
]}

Blanquez, Paqui ^{[1
]}

机构：

[1] Univ Autonoma Barcelona, Escola Engn, Chem Biol & Environm Engn Dept, E-08193 Barcelona, Spain

[2] Miguel Torres SA, Miquel Torres & Carbo 6, Barcelona 08720, Spain

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 343卷

关键词：

Algae; Waste activated sludge; Biogas; Biofertilizer; Circular bioeconomy; LIFE-CYCLE ASSESSMENT; ANAEROBIC-DIGESTION; TERTIARY-TREATMENT; ACTIVATED-SLUDGE; ENERGY; CULTIVATION; INTEGRATION; NUTRIENTS; BIOMASS; GROWTH;

D O I：

10.1016/j.biortech.2021.126080

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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-NH4+ (97%) and P-PO4-3 (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 CH4 kg VS-1. Co-digestion led to the highest methane yield (225.8 NL CH4 kg VS-1). 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.

引用

页数：11

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