Study on Biological Aerated Filter as Enhanced Pretreatment Process of Coagulation and Sedimentation

Liang Shen; Han Xiao; Wan Qiu Yang; De Ren Miao; Xiao Ming Li

doi:10.4028/www.scientific.net/AMR.726-731.1940

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731Study on Biological Aerated Filter as Enhanced...

Study on Biological Aerated Filter as Enhanced Pretreatment Process of Coagulation and Sedimentation

Abstract:

Using coagulation and sedimentation process in the advanced treatment of urban secondary effluent which can be recycled to circulating cooling water system in power plant is only perform well on COD_Cr and turbidity removal. But the concentrations of organic matter and NH₃ in effluent can not meet the requirements of circulating cooling water. Therefore, in this study, the feasibility of biological aerated filter (BAF) as a pretreatment enhancing coagulation and sedimentation process was discussed. Achieved by controlling the two operating modes: (1) secondary effluentcoagulation and sedimentationeffluent; (2) secondary effluent BAFcoagulation and sedimentation effluent.The results show that the BAF pretreatment removes ammonia nitrogen effectively, and the turbidity and COD_Cr of effluent of BAF-coagulation sedimentation process is much lower than individual coagulation and sedimentation process. The final effluent qualities meet the requirements of circulating cooling water system in power plant.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

1940-1944

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.1940

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Online since:

August 2013

Authors:

Liang Shen, Han Xiao, Wan Qiu Yang, De Ren Miao, Xiao Ming Li

Keywords:

Biological Aerated Filter (BAF), Circulating Cooling Water, Coagulation and Sedimentation, Pretreatment, Secondary Effluent

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