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1.
Chinese Journal of Biotechnology ; (12): 1889-1900, 2014.
Artículo en Chino | WPRIM | ID: wpr-345533

RESUMEN

In order to broaden the application area of the new nitrogen removal technology, a full-scale system for short-cut nitrification and anaerobic ammonium oxidation (Anammox) was investigated in the nitrogen removal from a strong-ammonium pharmaceutical wastewater. When the influent ammonium concentration was (430.40 ± 55.43) mg/L, ammonia removal efficiency was (81.75 ± 9.10)%. The short-cut nitrification and Anammox system could successfully remove nitrogen from the pharmaceutical wastewater. The start-up of short-cut nitrification system took about 74 d and the nitrite accumulation efficiency was (52.11 ± 9.13)%, the two-step mode using synthetic wastewater and actual wastewater was suitable for the start-up of short-cut nitrification system. The start-up of Anammox system took about 145 d and the maximum volumetric nitrogen removal rate was 6.35 kg N/(m3·d), dozens of times higher than those for the conventional nitrification-denitrification process. The strategy achieving Anammox sludge by self-growth and biocatalyst addition was suitable for the start-up of Anammox system.


Asunto(s)
Amoníaco , Química , Reactores Biológicos , Industria Farmacéutica , Nitrificación , Nitritos , Química , Nitrógeno , Química , Aguas del Alcantarillado , Microbiología , Eliminación de Residuos Líquidos , Métodos , Aguas Residuales , Química
2.
Chinese Journal of Biotechnology ; (12): 1347-1354, 2011.
Artículo en Chino | WPRIM | ID: wpr-304569

RESUMEN

Early-warning of compartmentalized anaerobic reactor (CAR) was investigated in lab-scale. The performance stability of CAR at high loading rate was worse than that at common loading rate. At high loading rate, the fluctuation of effluent chemical oxygen demand (COD) concentration and volatile fatty acids (VFA) concentration was larger than that of influent COD concentration. The average relative standard deviation of effluent COD concentration and VFA concentration was 32.95% and 40.46% respectively, while that of influent COD concentration was 8.08%. The saturation of volumetric loading rate (S(VLR)) and VFA (S(VFA)) could be used to alarm the performance of anaerobic reactors. The working performance was good when the CAR was operated at normal organic loading rate (OLR), in which S(VLR) and S(VFA) were below 0.89 and 0.40 respectively. The fluctuation of performance became larger when the CAR was operated at OLR near saturation, in which S(VLR) and S(VFA) were close to 1. The performance of CAR was deteriorated when the S(VLR) and S(VFA) were more than 1.


Asunto(s)
Anaerobiosis , Análisis de la Demanda Biológica de Oxígeno , Reactores Biológicos , Microbiología , Ácidos Grasos Volátiles , Aguas del Alcantarillado , Eliminación de Residuos Líquidos , Métodos
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