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Comparative study of leachate treatment by coagulation-flocculation process using iron-based coagulants: A case study on Souk-Ahras city

Publish place: Journal of Applied Research in Water and Wastewater، Vol: 8، Issue: 1
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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لینک ثابت به این Paper:
https://civilica.com/doc/1265185

شناسه ملی سند علمی:

JR_ARWW-8-1_011

تاریخ نمایه سازی: 15 شهریور 1400

Abstract:

The objective of this study was to evaluate the coagulation-flocculation process inthe clarification of leachate from the landfill Technical Center of Souk-Ahras cityusing three coagulants based on iron: ferrous sulfate FeSO۴.۷H۲O; ferrous chlorideFeCl۲.۴H۲O and ferric chloride FeCl۳. The influence of some parameters namelypH leachate, dose and nature of coagulant and nature of flocculant was studied.The best treatment efficiency was obtained at ۲۰ % of FeCl۳ giving a turbidity of۴.۰۹ NTU with pH adjustment of the raw leachate at acidic pH (۳.۵ ± ۰.۲) beforecoagulant addition and at a basic pH (۷.۵ ± ۰.۲) after addition of coagulant. Theiron valence and the nature of anion at which is linked, played a determinant rolein the clarification of leachate. The treatments made with ferric chloride in thepresence of a flocculant have proved that the starch was more efficient than limegiving abatement rates of ۹۹ % for COD and ۸۵ % for BOD۵.

Keywords:

Coagulation-Flocculation , Leachate , Iron , Starch , Lime

Authors

Saliha Bouranene

۱Faculty of Sciences and Technology, Department of process engineering, University of Mohamed Chérif Messaadia, Souk-Ahras, Algeria. ۲Laboratory of Science and Technology of Water and Environment LST۲E, Mohammed Chérif Messaadia

Khaled Djeffal

۱Faculty of Sciences and Technology, Department of process engineering, University of Mohamed Chérif Messaadia, Souk-Ahras, Algeria. ۳Faculty of Sciences and Technology, Department of civil engineering, University of Abbès Laghrour,

Lotfi Zeghadnia

۱Faculty of Sciences and Technology, Department of process engineering, University of Mohamed Chérif Messaadia, Souk-Ahras, Algeria. ۴Laboratory of Modeling and Socio-Economic Analysis in Water Science MASESE, Mohammed Chérif Messaadia

Abdalhak Gheid

۱Faculty of Sciences and Technology, Department of process engineering, University of Mohamed Chérif Messaadia, Souk-Ahras, Algeria. ۲Laboratory of Science and Technology of Water and Environment LST۲E, Mohammed Chérif Messaadia

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