The Phosphorous Removal after Anaerobic Stages of Different Durations and under Different Organic Loadings in the Reversed A2/O Process

Feng Zhang; Chang Qing Liu; Zhong Qiao; Gong Fa Chang; Yan Hui Qu; Xue Jun Bi

doi:10.4028/www.scientific.net/AMR.183-185.1195

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 183-185The Phosphorous Removal after Anaerobic Stages of...

The Phosphorous Removal after Anaerobic Stages of Different Durations and under Different Organic Loadings in the Reversed A²/O Process

Abstract:

The phosphorous removal behaviors under higher and moderate organic loading and after different durations of anaerobic stages were studied in the reversed A2/O process. Under both loading, the length of anaerobic stages did not significantly affect the subsequent aerobic phosphorus uptake efficiencies. Under higher loading, the available carbon sources are adequate, prolonging anaerobic stages led to more released phosphorus from phosphate accumulating organisms (PAOs). However, the phosphorus uptake rate in aerobic stage was almost the same as that of lower loading. At an anaerobic reaction time of 2.0 h, the corresponding specific aerobic phosphorus uptake rate achieved the highest value (6.13 mg/(L.h)). These results can help to determine the anaerobic hydraulic retention time in the reversed A2/O process.

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Periodical:

Advanced Materials Research (Volumes 183-185)

Pages:

1195-1199

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.183-185.1195

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Online since:

January 2011

Authors:

Feng Zhang, Chang Qing Liu, Zhong Qiao, Gong Fa Chang, Yan Hui Qu, Xue Jun Bi

Keywords:

Length of Anaerobic Stage, Loading, Phosphorus Removal, Reversed A²/O Process

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References

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