The effect of sanitary landfill leachate aging on the biological treatment and assessment of photoelectrooxidation as a pre-treatment process

Employing TiO 2 photocatalysis to deal with landfill leachate: Current status and development

“…Pera-Titus et al [87] has remarked that by increasing light intensity, the photon quantity emitted by the system into the solution also increases; hence more TiO 2 particles are activated. Treating municipal landfill leachate, at constant density of 31.5 mA cm -1 , a maximum of 57.3 % COD was degraded with a 400 W lamp, while only 37.7 % removal was achieved when 125 W UV lamp was employed [14]. Uyguner and Bekbolet [88] investigated the photocatalytic mineralisation of humic acids (HA) at low radiant power from 0.98 to 3.44×10 -6 Einstein min -1 and concluded that the photocatalytic HA degradation rate was a linear function of irradiance.…”

“…Conventional biological treatment is hindered by the presence of certain bio-recalcitrant compounds, especially in the case of mature leachate [14]. Similarly, physicochemical techniques such as membrane separation [15], air stripping [16], coagulation-flocculation [17] etc.…”

Treatment of landfill leachate using ASBR combined with zeolite adsorption technology

“…Numerous studies have been conducted for the treatment of landfill leachate using different approaches such as photoelectrooxidation, modified sequencing batch reactor, microalgae, vermiconversion and so on (Bakar et al 2015; Miao et al 2015; Muller et al 2015; Richards et al 2013; Wang et al 2013). Thus, in this study, the application of biological approach for the treatment of landfill leachate will be investigated since it is more effective, environmental friendly and cost-effective, a locally obtained bacterial strain capable of treating landfill leachate will be applied in a designated ASBR system for the treatment of landfill leachate in terms of ammoniacal nitrogen, COD and heavy metal removal.…”

The Biological Treatment of Young Leachate Using an Anaerobic-Aerobic Process

“…Leachate will not release from disposed waste before the water holding capacity of the waste is exceeded that contains high organic concentration, inorganic macro components, heavy metals, and xenobiotic organic compounds [2]. Leachate formation conditions and their composition are highly complex and varied depending on a number of factors like environmental conditions, waste characteristics, operations of the landfill, especially the dynamics of the decomposition process occurring within the disposed waste cell [3]. When refuse is buried in a landfill, a complex of biological and chemical reactions occur as the refuse decomposes.…”