Up-scaling aquaculture wastewater treatment by microalgal bacterial flocs: From lab reactors to an outdoor raceway pond

被引：115

作者：

Van den Hende, Sofie ^{[1
,2
]}

Beelen, Veerle ^{[1
]}

Bore, Gaelle ^{[1
,3
]}

Boon, Nico ^{[2
]}

Vervaeren, Han ^{[1
]}

机构：

[1] Univ Ghent, Fac Biosci Engn, Enbichem, Lab Ind Water & Ecotechnol LIWET, B-8500 Kortrijk, Belgium

[2] Univ Ghent, Fac Biosci Engn, Lab Microbial Ecol & Technol LabMET, B-9000 Ghent, Belgium

[3] EME, F-35170 Bruz, France

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 159卷

关键词：

Algae; Bioflocculation; Raceway pond; Aquaculture wastewater; Biomass; ALGAE; RECOVERY;

D O I：

10.1016/j.biortech.2014.02.113

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Sequencing batch reactors with microalgal bacterial flocs (MaB-floc SBRs) are a novel approach for photosynthetic aerated wastewater treatment based on bioflocculation. To assess their technical potential for aquaculture wastewater treatment in Northwest Europe, MaB-floc SBRs were up-scaled from indoor photobioreactors of 4 L over 40 and 400 L to a 12 m(3) outdoor raceway pond. Scale-up decreased the nutrient removal efficiencies with a factor 1-3 and the volumetric biomass productivities with a factor 10-13. Effluents met current discharge norms, except for nitrite and nitrate. Flue gas sparging was needed to decrease the effluent pH. Outdoor MaB-flocs showed enhanced settling properties and an increased ash and chlorophyll a content. Bioflocculation enabled successful harvesting by gravity settling and dewatering by filtering at 150-250 lm. Optimisation of nitrogen removal and biomass valorisation are future challenges towards industrial implementation of MaB-floc SBRs for aquaculture wastewater treatment. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：342 / 354

页数：13

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