Flocculation property of composite flocculants PAC/CPAM for polluted landscape water pretreatment

In this paper, we investigate the flocculation performance of composite coagulants polyaluminium chloride (PAC) and cationic polyacrylamide (CPAM) for landscape water treatment. The flocculant CPAM was synthesized through low-pressure UV initiation in our laboratory. This method was an environment-f...

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Published in:Desalination and water treatment 2018-12, Vol.136, p.212-225
Main Authors: Ma, Jiangya, Jiang, Liyan, Fu, Xue, Ding, Lei, Zhou, Shun, Wang, Qiongjie, Fu, Kun, Shi, Jun, Ding, Houcheng, Liao, Yi
Format: Article
Language:English
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Cationic polyacrylamide
Flocculation
Landscape water
Low-pressure ultraviolet
Polyaluminium chloride
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container_title Desalination and water treatment
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creator Ma, Jiangya
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description In this paper, we investigate the flocculation performance of composite coagulants polyaluminium chloride (PAC) and cationic polyacrylamide (CPAM) for landscape water treatment. The flocculant CPAM was synthesized through low-pressure UV initiation in our laboratory. This method was an environment-friendly and efficient approach. The flocculation mechanism of the combined flocculant was further analyzed by Fourier-transform infrared spectroscopy, three-dimensional fluorescence analysis, zeta potential and microscopic observation. Results indicated that turbidity, UV254, phosphorus, and algae were effectively removed using PAC/CPAM flocculants. Humus and protein were easily removed from landscape water through flocculation. Moreover, electrical neutralization of PAC and the adsorption bridging effect of CPAM were found to be dominant in flocculation. The flocs from using PAC/CPAM were more compacted and stabilized than those from using PAC or CPAM alone. In addition, the appropriate divided addition of PAC was favorable for flocculation.
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subjects Cationic polyacrylamide
Flocculation
Landscape water
Low-pressure ultraviolet
Polyaluminium chloride
title Flocculation property of composite flocculants PAC/CPAM for polluted landscape water pretreatment
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