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Application of anaerobic dynamic membrane bioreactor (AnDMBR) for the successful enrichment of Anammox bacteria using mixed anaerobic and aerobic seed sludge

TitleApplication of anaerobic dynamic membrane bioreactor (AnDMBR) for the successful enrichment of Anammox bacteria using mixed anaerobic and aerobic seed sludge
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2018
AuthorsSaleem, M., Lavagnolo M.C., Concheri G., Stevanato P., Squartini A., and Spagni A.
JournalBioresource Technology
Volume266
Pagination532-540
ISSN09608524
Abstract

This study investigated a novel bioreactor configuration coupled with a side-stream dynamic membrane (DM) for Anammox enrichment as an alternative for conventional membrane. Bioreactor was fed with synthetic feed and seeded with a mix of anaerobic and aerobic sludge. In situ mechanical cleaning was employed for DM cleaning. DM development and performance was analysed over two polyamide-nylon meshes (200 and 52 µm). Solid-liquid separation of 52 µm mesh outperformed 200 µm with an average effluent turbidity of 2.4 ± 0.1 NTU. The system was operated at a maximum nitrogen loading rate of 696 mg-N L−1 d−1 and achieved a maximum nitrogen removal rate of 611.6 mg-N L−1 d−1. At steady state, the average ammonium, nitrite and total nitrogen removal efficiencies were 87 ± 0.6%, 98.5 ± 0.15% and 87.5 ± 0.56% respectively. Digital realtime PCR Sequence analysis showed that Planctomycetales belonging to ascertained Anammox-specific genera progressively increased their presence in the reactor consistently with its nitrogen removal performance. © 2018 Elsevier Ltd

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85049617880&doi=10.1016%2fj.biortech.2018.06.100&partnerID=40&md5=677dee9b7aa1aad2d3ef9678d44c2da6
DOI10.1016/j.biortech.2018.06.100
Citation KeySaleem2018532