Evaluation of Al sub(30) Polynuclear Species in Polyaluminum Solutions as Coagulant for Water Treatment

The coagulation performances by studying the rate of flocs development, the turbidity removal efficiency, and charge neutralization capacity under fixed pH conditions and uncontrolled pH conditions were investigated. The effect of pH on coagulation was also studied. The development of flocs size dur...

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Published inChemosphere (Oxford) Vol. 64; no. 6; p. 912
Main Authors Chen, Zhaoyang, Fan, Bin, Peng, Xianjia, Zhang, Zhongguo, Fan, Jinghua, Luan, Zhaokun
Format Journal Article
LanguageEnglish
Published 01.08.2006
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Summary:The coagulation performances by studying the rate of flocs development, the turbidity removal efficiency, and charge neutralization capacity under fixed pH conditions and uncontrolled pH conditions were investigated. The effect of pH on coagulation was also studied. The development of flocs size during coagulation period was measured on a modified laser particle size analyzer. Coagulation experiments were carried out at 25 degree C using jar test on a six-paddle gang stirrer. The pH value of working solution was depressed by the acidity and hydrolysis of coagulants after dosing. It was found that the Zeta potential of colloids decreased monotonically with the increase of pH value.
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ISSN:0045-6535
DOI:10.1016/j.chemosphere.2006.01.038