Anammox cultivation in a closed sponge-bed trickling filter. (June 2015)

• Record Type: Journal Article
• Authors: Sánchez Guillén, J.A.; Cuéllar Guardado, P.R.; Lopez Vazquez, C.M.; de Oliveira Cruz, L.M.; Brdjanovic, D.; van Lier, J.B.
• Is Part Of: Bioresource technology. Volume 186(2015)
• Page Start: 252
• Page End: 260
• Publication Date: 2015-06
• Subjects: Anammox -- DHS -- Closed sponge-bed trickling filter -- Immobilized biomass -- Mainstream nitrogen removal; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.03.073
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Anammox were cultivated in closed sponge-bed trickling filters at 20 °C and 30 °C. The reactor at 30 °C achieved an early stability in terms of nitrogen removal. Both reactors reached a nitrogen removal above 80% with an HRT of only 1 h. This technology can be used for post-treatment nitrogen removal in mainstreams. Abstract: A feasibility study was carried out to assess the cultivation of Anammox bacteria in lab-scale closed sponge-bed trickling filter (CSTF) reactors, namely: CSTF-1 at 20 °C and CSTF-2 at 30 °C. Stable conditions were reached from day 66 in CSTF-2 and from day 104 in CSTF-1. The early stability of CSTF-2 is attributable to the influence of temperature; nevertheless, by day 405, the nitrogen removal performed by CSTF-1 increased up to similar values of CSTF-2. The maximum total nitrogen removal efficiency was 82% in CSTF-1 and 84% in CSTF-2. After more than 400 days of operation, CSTF-1 and CSTF-2 were capable to attain a total nitrogen removal efficiency of 74 ± 5% and 78 ± 4% with a total nitrogen conversion rate of 1.52 and 1.60 kg-N/msponge 3 d, respectively. The proposed technology could be a suitable alternative for mainstream nitrogen removal in post-treatment units via the Anammox conversion pathway.