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《Environmental Science & Technology》 2009-11
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Microbial Flocculants for Improving the Dewatering Capability of Sludge

ZHAO Ji-hong1, YANG Jin-feng1,2, WANG Qing-ning1, LIU Cong-bin1 (1.School of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001,China; 2.Research lnsititute of Environmental Protection Science of Xinyang, Xinyang 464000, China)  
A new kind of flocculants -producing bacteria was isolated from activated sludge,and microbial flocculants produced by the strain under the optimal culture conditions was named M-127,which was used to improve the dewatering capability of sludge,and compared with PAM,PAC and Al(2SO)43. Results showed that settling capability of the sludge could be improved when M-127 dose was 2mg/L. Under the optimal dewatering conditions of microbial flocculants M-127 dose 40mg/L and pH 6.5,the resulting dewatering percentage reached 96.3%,greater than individual dose of PAM,PAC and Al(2SO4)3.
【CateGory Index】: X703
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