Impact of Partial Backwashing to Ammonia Nitrogen Removal in Biological Aerated Filter

Ping Li; Li Long Yan; Fang Ma

doi:10.4028/www.scientific.net/AMR.183-185.720

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 183-185Impact of Partial Backwashing to Ammonia Nitrogen...

Impact of Partial Backwashing to Ammonia Nitrogen Removal in Biological Aerated Filter

Abstract:

Biological Aerated Filter has the drawback of severe plug under low temperature, and frequent back-washing would cause the bad performance of ammonia removal. To solve these shortcomings, partial backwashing experiment was carried out to test its amelioration effect on Biological Aerated Filter. The result showed that performing backwashing at the 40 cm of filter had strong protective effect on nitrifying bacteria, the ammonia removal could be improved gradually with the highest removal rate of 71.71%. Partial backwashing affected less on ammonia removal and the removal efficiency could be restored to the previous level after the backwashing completed for 2.5 h.

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Periodical:

Advanced Materials Research (Volumes 183-185)

Pages:

720-724

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.183-185.720

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Online since:

January 2011

Authors:

Ping Li, Li Long Yan, Fang Ma

Keywords:

Ammonia Nitrogen Removal, Biological Aerated Filter (BAF), Partial Backwashing

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