Paper Title:
Application of Chitosan in Removing Algae by Dissolved Air Flotation
  Abstract

Using polyaluminium chloride (PAC) and chitosan as the main coagulant and coagulant-aid respectively, the high algae-laden water was treated by coagulation/flocculation/dissolved air flotation (C/F/DAF). When the doses of PAC and chitosan were both moderate (7.0~8.4 mg Al2O3/L of PAC and 0.6~1.0 mg/L of chitosan), the removal rates of turbidity, algae cells and TOC were all increased apparently compared with adding PAC alone. Especially, the residual aluminum concentration reduced significantly in treated water with the aid of chitosan. The structrue and strength of flocs formed by coagulation aid of chitosan were improved obviously, which proved that addition of chitosan could enhance the flocculation performance of PAC. So, in C/F/DAF process for removing algae, using chitosan as coagulant-aid can improve the flotation performance and reduce residual aluminum concentration in treated water.

  Info
Periodical
Advanced Materials Research (Volumes 347-353)
Chapter
Chapter 3: Development and Utilization of Wind Energy
Edited by
Weiguo Pan, Jianxing Ren and Yongguang Li
Pages
1911-1916
DOI
10.4028/www.scientific.net/AMR.347-353.1911
Citation
Y. H. Wang, S. G. Zhuo, Y. X. Yang, N. Li, "Application of Chitosan in Removing Algae by Dissolved Air Flotation", Advanced Materials Research, Vols. 347-353, pp. 1911-1916, 2012
Online since
October 2011
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Price
$32.00
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