Trend of municipal landfill leachate treatment via a combination of ozone with various physic-chemical techniques
by Hamidi Abdul Aziz; Salem S. Abu Amr; Mohammed J.K. Bashir
International Journal of Environmental Engineering (IJEE), Vol. 8, No. 2/3, 2016

Abstract: The risk of groundwater pollution due to municipal landfill leachate seepage has become a major environmental concern worldwide. Various types of physico-chemical treatment processes have been employed to achieve a satisfactory removal of refractory pollutants from the landfill leachate. Ozone has recently received much attention because of its highly powerful oxidation potential in landfill leachate treatment. The present study investigated ozonation process reaction, performance and limitation in landfill leachate treatment. Furthermore, the effectiveness of using a combination of various processes such as; coagulation-ozonation, Fenton-ozonation, adsorption-ozonation, and biological-ozonation) in leachate treatment are compared and evaluated. A literature survey indicated that an insufficient performance in term of pollutants removal efficiencies has been obtained when landfill leachate was treated via ozone alone. However, a combination of ozone and other processes achieved a considerable improvement in term of treatment efficiency; however, several stages and long treatment time are required.

Online publication date: Sat, 18-Feb-2017

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