The effectiveness of chitosan as a coagulant flocculant in surface water treatment has been studied. Tests were carried out in laboratory on treated and raw water. The treated water was mixed with high and low concentrations of bentonite to simulate turbid water. This treated water provides from water treatment plant of Algiers (Boudouaou site) which is supplied by both dams of Keddara and Beni Amrane. The raw water comes directly from these two dams. Chitosan with 85% degree of deacetylation and derived from crab chitin has been used. The performance of coagulation flocculation process has been assessed by measuring the supernatant turbidity for different doses of chitosan, initial turbidity, water quality and pH. The obtained results show that chitosan can be used in a large pH range. Chitosan is effective for coagulation of bentonite suspension and for raw water with high initial turbidity. Otherwise, chitosan is inefficient for raw water with very low initial turbidity. In this case, the use of chitosan as aid coagulant with aluminium sulfate (main coagulant) allows more effectiveness in removing turbidity.
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Research Article|
April 01 2011
Use of chitosan in coagulation flocculation of raw water of Keddara and Beni Amrane dams Available to Purchase
Hassiba Zemmouri;
1Laboratoire des biotechnologies Environnementales et Génie des Procédés (BIOGEP), Ecole Nationale Polytechnique, 10 Avenue Hassen Badi, BP 182, El-Harrach, Algiers, Algeria
2Center of Development of Renewable Energies, BP 62 Route de l'Observatoire, Bouzeréah, Algiers, Algeria
E-mail: [email protected]
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Slimane Kadouche;
Slimane Kadouche
1Laboratoire des biotechnologies Environnementales et Génie des Procédés (BIOGEP), Ecole Nationale Polytechnique, 10 Avenue Hassen Badi, BP 182, El-Harrach, Algiers, Algeria
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Hakim Lounici;
Hakim Lounici
1Laboratoire des biotechnologies Environnementales et Génie des Procédés (BIOGEP), Ecole Nationale Polytechnique, 10 Avenue Hassen Badi, BP 182, El-Harrach, Algiers, Algeria
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Madjid Hadioui;
Madjid Hadioui
4Laboratoire de biophysicochimie de l'Environnement, Université de Montréal, 2900 Boul. Édouard Montpetit Montréal, QC, Canada H3T 1J4
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Nabil Mameri
Nabil Mameri
3Département de Génie chimique, University of Technology of Compiegne, B.P. 20.509, 60205 Compiègne Cedex, France
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Water Supply (2011) 11 (2): 202–210.
Article history
Received:
November 01 2010
Accepted:
April 01 2011
Citation
Hassiba Zemmouri, Slimane Kadouche, Hakim Lounici, Madjid Hadioui, Nabil Mameri; Use of chitosan in coagulation flocculation of raw water of Keddara and Beni Amrane dams. Water Supply 1 April 2011; 11 (2): 202–210. doi: https://doi.org/10.2166/ws.2011.038
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