Study on the Application of Square Activated Coke Adsorption Tank in Sewage Treatment Plants
Activated coke is widely used in the field of wastewater treatment due to its strong adsorption capacity.In this experiment,a square adsorption tank pilot plant is successfully constructed(231 d of continuous operation),scanning electron microscopy,specific surface area,and microporous analyzer are used to analyze the surface structure,pore size,and pore volume of activated coke,and the deep purification effect of activated coke on urban sewage treatment plant effluent is studied.The experimental results show that after the adsorption of activated coke in the fixed bed filter,the concentration of Chemical Oxygen Demand(COD)in the effluent is basically less than 13 mg/L,and in some periods it is less than 10 mg/L;the chromaticity of the effluent is generally less than 8 degrees,and in some periods it is less than 5 degrees;the adsorption of Total Nitrogen(TN)and Total Phosphorus(TP)by activated coke reaches saturation within one month;the effluent quality complies with the Discharge Standards for Water Pollutants in the Jialu River Basin(DB 41/908-2014),with indicators COD and TN both exceeding the Class A standard of the Pollutant Discharge Standards for Urban Sewage Treatment Plants(GB 18918-2002),and basically meeting the Class Ⅲ water quality requirements of the Environmental Quality Standards for Surface Water(GB 3838-2002).
sewage treatmentactivated cokeadsorbentdeep processingsurface waterclass Ⅲ water quality
万方数据
维普
