Treatment of landfill leachate by the Fenton process

• Published in: Water research (Oxford) Vol. 40; no. 20; pp. 3683 - 3694
• Main Authors: Deng, Yang, Englehardt, James D.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.12.2006; Elsevier Science
• Subjects: aeration; Applied sciences; biodegradation; chemical degradation; Coagulation; color; electrical treatment; equipment performance; Exact sciences and technology; Fenton process; Fenton treatment; hydrogen peroxide; Hydrogen Peroxide - chemistry; iron; Iron - chemistry; Landfill leachate; landfill leachates; literature reviews; organic compounds; Other industrial wastes. Sewage sludge; Oxidation; Oxidation-Reduction; Pollution; pollution control; radiation treatment; temperature; ultraviolet radiation; Waste Disposal, Fluid - methods; Wastes; Water Pollutants, Chemical - chemistry; Water treatment and pollution; Oxidation; Landfill leachate; Fenton treatment; Coagulation; Waste dumping; Pollutant behavior; Treatment efficiency; Fenton treatment Landfill leachate Oxidation Coagulation; Aeration; Pollution; Ultraviolet radiation; Flocculation; Fenton reaction; Physicochemical purification; Leachate; Photooxidation; Photochemical degradation
• ISSN: 0043-1354; 1879-2448
• DOI: 10.1016/j.watres.2006.08.009

In recent years, studies of leachate treatment by conventional Fenton, photo-Fenton and electro-Fenton processes have indicated that these methods can effectively reduce concentrations of organic contaminants and color. In addition, the process can increase the biodegradable fraction of organic constituents in leachate, particularly in mature or biologically recalcitrant leachate. Oxidation and coagulation both play important roles in the removal of organics. Initial pH, dosages of Fenton reagents, aeration, final pH, reagent addition mode, temperature, and UV irradiation may influence final treatment efficiency. In this paper, current knowledge of performance and economics of Fenton processes for treatment of landfill leachate as reported for laboratory, pilot and full-scale studies is reviewed, with the conclusion that the Fenton process is an important and competitive technology for the treatment or pretreatment of landfill leachate.