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《Environmental Science & Technology》 2010-05
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Research of Treated Wastewater Containing Phenol by the Fluidized Bed with Immobilized Cells

LIU Gui-ping,WEI Jian-feng,LIU Chang-feng,WANG Jin (School of Environmental and Biological Engineering,Shenyang Institute of Chemical Technology,Shenyang 110142,China)  
The bacterium was immobilized by using modified polyacrylamide,the fluidized bed reactors were used for degradation experiment with simulative phenol wastewater. The changes of immobilized cells degrading phenol were studied at different aeration amounts,pH and the concentration of phenol. Results show that in the effective volume of 6L of the reactors,the immobilized cells in the dosage was 1.4g/L,pH 6 ~8,aeration amounts 70L/h. Within 24 hours enable the concentration of 700mg/L phenol to degrade completely. The effective volume of 5.5L of the fluidized bed reactors were used for continuous influent degradation experiment with simulative phenol wastewater. When the concentration of phenol was less than 400mg/L,the aeration amounts 60L/h,influent amounts 0.6L/h,HRT 9.5h,the effluent concentration of phenol can be reduced to less than 20mg/L. After continuous used for 30 days,the mechanical strength and flexible of immobilized cells was still good. Compared to free cells,immobilized cells have a better ability of phenol tolerance,a high degradation rate and a wider range of pH,which can be used repeatedly.
【Fund】: 辽宁省教育厅科学技术研究项目(2008576)
【CateGory Index】: X703.1
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