Experimental Study on Domestic Sewage Treatment by Biological Aerated Filter

Abstract:

On the up-flow biological aerated filter to remove COD and NH₃-N were studied the effect and contrast in various stages of finding the optimal operating conditions, so as to achieve energy conservation, the purpose of reducing operating costs. Through experiment studied that the variation of air-water ratio, hydraulic loading, organic concentration in the removal of COD and NH₃-N effects, observe and analyse the change of COD and NH₃-N removal and the characteristics of microorganisms of filter’s different height. The results showed that COD and NH₃-N removal are high under the condition of air-water ratio 4:1~5:1, hydraulic loading 1~2 m³/ (m²●h), organic concentration 300~400 mg/L. The concentration of COD and NH₃-N of effluent which are treated by biological aerated filter can meet with second degree discharging standards.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 432-436
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.432
• Online since: January 2011
• Authors: Xia Wang, Yong Qiang Wu
• Keywords: Air-Water Ratio, Biological Aerated Filter (BAF), Hydraulic Loading, Organic Concentration

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