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Experimental study on chitosan composite flocculant for treating papermaking wastewater

  • Water Treatment and Demineralization Technology
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Abstract

k]In this study, the coagulating effect of a novel composite flocculant on treating papermaking wastewater was studied and discussed. Results indicated that it achieved the best coagulating effect when this composite flocculant consisting of 60 mg/l of polymerized ferrous sulfate, 2 mg/l of polyacrylamide and 0.4 mg/l of chitosan, and pH value of wastewater was adjusted to 7.5. It also observed that the removal rate of COD and SS with this novel composite flocculant reached 72.5% and 98.5% respectively. Compared with the conventional flocculant such as polyacrylamide/polyaluminium chloride, the percentage of removing COD and SS using this composite flocculant were increased by 15.2% and 6.4% respectively, moreover, its input cost was cut down by 18.4%. So this composite flocculant has significantly environmental and economic benefits.

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Authors and Affiliations

  1. School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, P. R. China

    D. F. Zeng, D. Hu & J. Cheng

Authors
  1. D. F. Zeng
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  2. D. Hu
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  3. J. Cheng
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Additional information

Original English Text © D.F. Zeng, D. Hu, J. Cheng, 2012, published in Khimiya i Tekhnologiya Vody, 2012, Vol. 34, No.1, pp. 55–65.

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Zeng, D.F., Hu, D. & Cheng, J. Experimental study on chitosan composite flocculant for treating papermaking wastewater. J. Water Chem. Technol. 34, 35–41 (2012). https://doi.org/10.3103/S1063455X12010067

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  • DOI: https://doi.org/10.3103/S1063455X12010067

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