Changes of pH in A2O Process System and its Impact on Nitrogen and Phosphorus Removal

Yong Feng Li; Jian Yu Yang; Guo Cai Zhang

doi:10.4028/www.scientific.net/AMR.588-589.55

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 588-589Changes of pH in A2O Process System and its Impact...

Changes of pH in A²O Process System and its Impact on Nitrogen and Phosphorus Removal

Abstract:

Simulate sewage were used in an anaerobic-anoxic-aerobic biological nutrient removal system(A²O process), by observing the pHs in different compartments and its reflected changes in nitrogen and phosphorus removal, studied on the effects of different pHs on the removal of pollutants. The experiments indicates that the anaerobic phosphorus release showed the main performance of the decline of pH, denitrification in anoxic zone caused the rise of pH, uptake of phosphate in the aerobic zone mainly caused the continuous rise of pH. There is no evidently changes in COD removal, ammonia nitrogen get the highest removal as the pH value was between 8.0-8.5, when pH was at 6.5-7.5, the TN have the maximum removal rate, TP can keep in a high level when the pH was above 6.0.

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Periodical:

Advanced Materials Research (Volumes 588-589)

Pages:

55-58

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.588-589.55

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Online since:

November 2012

Authors:

Yong Feng Li, Jian Yu Yang, Guo Cai Zhang

Keywords:

A²O Process, Nitrogen Removal, pH, Phosphorus Removal, Sewage Treatment

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References

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