Condition Analysis of Nitrogen Remove from the Mixture of Municipal Wastewater and Fecal Sewage

Ming Yan Shi; Dong Hua Mo; Kang Sheng He; Jing Peng Li

doi:10.4028/www.scientific.net/AMR.418-420.717

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Condition Analysis of Nitrogen Remove from the...

Condition Analysis of Nitrogen Remove from the Mixture of Municipal Wastewater and Fecal Sewage

Abstract:

In order to ensure the stable and standard discharge of mixed nitrogen sewage, Guangzhou Datansha Wastewater Treatment Plant has made a test using an inverted A² / O process, with the actual Wastewater as entry water. When the ratio of mixed fecal sewage is 0.33%, the results showed that, extending the HRT(Hydraulic Retention Time) can help to enhance the effect of removing nitrogen, and HRT should be ensured at least 8 hours under the test conditions. And the increase of the concentration of dissolved oxygen can promote the effect of removing nitrogen ranging from 1.0 to 1.5 mg/L. And the sludge reflux ratio should be remained at 60%. Besides, the growth of sludge age has positive effect on nitrification, so the sludge age should be controlled in more than 20 days under the experimental conditions.

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Materials Processing Technology, ICAMMP2011

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

717-720

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.717

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Online since:

December 2011

Authors:

Ming Yan Shi, Dong Hua Mo, Kang Sheng He, Jing Peng Li

Keywords:

Denitrification, Dissolved Oxygen (DO), Nitrification, Nitrogen Removal, Wastewater

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