Study on the Short-Cut Nitrification which in a Sequencing Batch Reactor (SBR) under the Effect of Sludge Age

Hui Yang; Hui Hui Cui; Yu Zhang; Yue Xu

doi:10.4028/www.scientific.net/AMR.243-249.4817

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Operation and Maintenance of Wastewater Treatment Plants: Case Studies in China
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Treatment of Refractory Pharmaceutical Wastewater with Combined Bio-Technologies
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Regulating Strategies of Strengthening Nitrogen Removal for Low-Carbon Wastewater in Reversed A²/O Process
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Study on the Short-Cut Nitrification which in a Sequencing Batch Reactor (SBR) under the Effect of Sludge Age
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Phosphorus Removal in Biological Aerated Filters by Chemically Enhanced
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Fractal Dimension of Floc Growth in Micro-Coagulation Stage II: Some Normal Influencing Factors
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Fractal Dimension of Floc Growth in Micro-Coagulation Stage I: Using to Forecast Water Quality of Settled Water
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Effect of pH and Temperature on Coagulation Efficiency in a North-China Water Treatment Plant
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249Study on the Short-Cut Nitrification which in a...

Study on the Short-Cut Nitrification which in a Sequencing Batch Reactor (SBR) under the Effect of Sludge Age

Abstract:

Sludge age (SRT) is one of the primary influencing factors in the system of short-cut nitrification, in order to select a suitable SRT, in the stable operation of SBR, with the simulated wastewater as treatment object, the response effect and the sludge floc characteristics of short-cut nitrification are investigated by changing the SRT. Experiment has proved that the longer SRT the more complete nitrification. When the SRT for the 10d time, the NO₂^--N accumulation rate was maximum. When the SRT is short, the biological floc phase composed mainly by bacilli, and the surface of the sludge floc is rough and structure is loose. When the SRT is longer, the reactor's biological floc phase mainly composed by the coccus and has got relatively smooth surface with a compact structure. Rod-shaped bacteria are the good characteristics of the phenomenon of the short-cut nitrification.