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The Adsorption-Flocculation Method Using Bentonite for Treatment of Heavy Metal-Containing Wastewater

HANG Hu;HU Bolu;MA Bing;ZhAO Xiaofan(Dept,of Chem ,Qingdao Univ.Qingdao 266071)YU Jijin(Dept.of Environ. Sci.Qingdao Univ ,Qingdao 266071)  
The adsorption of Pb ̄(2+), Cd ̄(2+)and Cr ̄(3+)ions respectively on the raw be ntonite and theconditions of flocculation of bentonite are studied in this paper.Combining the adsorption andflocculation,a new technology for treating wastewater is thus presented.When 0.04%of ben-tonite and 0.006%of PAC are added,93%of Pb ̄(2+) iOn can be removed from the low concentra-tion wastewater.
【CateGory Index】: X703
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