Vol 6 Issue 3 September 2019-December 2019
Hassan Adel Zaki, Khalid Zaher
Abstract:Landfill leachate is a harmful liquid, a highly concentrated mixture of organic and inorganic contaminants, including ammonia nitrogen, heavy metals, inorganic salts, and pollutant waste. Leachate is made up of rain that passes through a landfill site and liquids that are generated by the breakdown of the waste within the landfill, their quantity and quality depending on the age and type of substances in the landﬁll. Landfill leachate has high chemical oxygen demand (COD), total dissolved solids (TDS), ammonia and other toxic wastes, and, eventually, high biochemical oxygen demand (BOD5). Leachate can be an important source of contamination for groundwater and soil and must be appropriately treated before being discharged to eliminate or minimize the adverse impact of the waste on the surrounding environment. Conventional biological processes are time consuming and inefficient methods to treat leachate directly. Consequently, physicochemical processes are frequently utilized before biological action in treatment plants to pretreat this liquid waste. In this study, advanced oxidation processes (AOPs), including Fenton, UV/H2O2, and photo-Fenton processes, were investigated in laboratory-scale experiments as an effective alternative for municipal leachate treatment. A modiﬁed photo-Fenton process was found to be the most effective method, with percentage COD removal of 87.95 % and colour removal of 96.32% up to 360 min.
Keywords:Advanced Oxidation Photochemical Processes (AOPs); Treatment; Landﬁlls; Leachate.
A Comparative Study of Landfill Leachate Treatment Using Advanced Oxidation Photochemical Processes (AOPs)
Hassan Adel Zaki,Khalid Zaher
International Journal of Novel Research in Civil Structural and Earth Sciences