REMOVAL OF PHENOL AND SURFACTANT FROM LANDFILL LEACHATE BY
COAGULATION-FLOCCULATION PROCESS
H. BAKRAOUY 1, S. SOUABI 1*, K. DIGUA 1, A. PALA 2 1. Hassan II University, Faculty of Sciences and Techniques, Laboratory of Water and Environmental Engineering, BP 146, Mohammedia, Maroc
2. Dokuz EylĂŒl Universisty, Faculty of Engineering, Environmental Engineering Department (ĂEVMER), IZMIR, Turkey
*Corresponding author: salah.souabi@gmail.com
Following the action of rainfall and natural fermentation, the stored waste produces a liquid fraction called leachate. This leachate is rich in organic matter (biodegradable but also refractory) and trace elements. There are many techniques of treating the leachate, in particular, biological, physicochemical, membrane processes. The choice of a technique instead of another depends on several parameters including: the age of the leachate, composition... In this work we applied a coagulation-flocculation process to treat intermediate landfill leachate of Rabat city with a combined ferric chloride coagulant and a polymer flocculant. We were inspired by full factorial design, including twenty five experiments, to determine optimal dosages of coagulant and ïŹocculant. We operate at pH 8.4, the best removal efficiencies obtained were 88 % for Turbidity, 98 % for Phenol and 82 % for surfactant. The optimum dosages values determined by this study were 13.2 gâL-1 of coagulant, 62 mLâL-1 of ïŹocculant.
