The Prediction of Partial-Nitrification-Anammox Performance in Real Industrial Wastewater based on Granular Size
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URI: http://hdl.handle.net/10835/14869
DOI: https://doi.org/10.1016/j.jenvman.2021.112255
DOI: https://doi.org/10.1016/j.jenvman.2021.112255
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Guzmán Fierro, Víctor; Sanhueza, José; Arriaga, Constanza; Pereira, Luis; Campos, Víctor; [et al.]Fecha
2021-02-27Resumen
To date, the partial nitrification-Anammox (PN-A) granular sludge size has been exclusively analyzed in synthetic substrates. In this work, different ranges of granular size of PN-A sludge were studied at low oxygen concentration using real industrial wastewater as, well as a synthetic substrate. The granular sludge was characterized by the specific nitrification activity (SNA), specific anammox activity (SAA), and granule sedimentation rate. The relative abundance of the bacterial consortium was assessed for each range of diameters through the fluorescence in situ hybridization (FISH) technique. SNA exhibits a direct association with the specific surface of granules, which proves the importance of the outer layer in the nitrification process. Even more critical, the flocculent sludge allowed the stability of the nitrifying activity. The SAA showed different performances faced the real industrial and synthetic substrates. With the synthetic substrate, the SAA decreased at higher diamet...
Palabra/s clave
granular
sludge
Anammox
size
diameter