Volume 11, Issue 2 (9-2012)                   TB 2012, 11(2): 83-97 | Back to browse issues page

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Zazouli M, Yousefi Z, Eslami A, Bagheri Ardebilian M. Evaluation of the Different Fenton Processes Combined with Coagulation- Flocculation Pretreatment in Landfill Leachate Treatment. TB. 2012; 11 (2) :83-97
URL: http://tbj.ssu.ac.ir/article-1-185-en.html
Mazandaran University of Medical Sciences , z.yousefi2004@gmail.com
Abstract:   (14524 Views)

 Background: Advanced oxidation processes such as Fenton and photo-Fenton that have been applied effectively to oxide the persistent organic compounds in leachate and converts them to unharmful materials and final products. However, there are a few data about application of Fenton-like process in leachate treatment. Therefore, the aim of this study was to treat the municipal landfill leachate by above processes..

 Methods: This study was an experimental study that was conducted with set up a pilot system. The used leachate collected from a municipal unsanitary landfill of Qaem-shahr city that located in Mazandaran province. All examinations and samples were analyzed according to Stndard Methods for the Examination of Water and Wastewater.

 Results: The results showed that the conventional coagulation & flocculation process with chloride ferric removed about 45% of COD in optimum conditions. The combining of pretratment with AOPs significantly increased removal efficiency so that the removal efficiency COD for Fenton, photo-Fenton and modified fenton processes was 89, 85.45 and 81.82 percent in the same conditions, respectively. After all processes, the biodegradability (BOD5/COD ratio) of treated leachate compared to raw leachate was increased and the highest increasing of BOD5/COD ratio was in the photo-Fenton process.

 Conclusion: The efficiency of the Fenton-like process is less than Fenton and photo-Fenton processes. Instead, the Fenton-like process was done at the higher pH and will not have these problems.

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Type of Study: Research | Subject: Special
Received: 2012/09/18 | Published: 2012/09/15

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