Experimental study on A2/O sewage treatment process enhanced by fixed bed plate filler
In view of the characteristics of the influent water of a sewage treatment plant such as:large fluctuation of water quantity,high NH3-N concentration,low COD concentration and so on,a fixed bed plate filler was added to the biochemical pond in A2/O process to enhance the treatment effect.The experimental re-sults showed that,the wastewater treatment plant with fixed bed plate filler added to the biochemical pond in A2/O process can maintain a stable COD and NH3-N removal rates of about 90％and 95％respectively.The effluent water quality met the requirement of level A grade 1 in GB 3838-2002 Environmental quality standards for surface water.
enhancementsecondary treatmentfixed bed plate fillerA2/O processbiochemical pondbiomembranedenitrification performance
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