up flow anaerobic sludge blanket (uasb) treatment has proved its efficiency among other treatment methods especially for hardly degradable wastewaters such as industrial wastewaters and leachate. uasb is a widely used reactor with a resistance biomass. waste landfills' leachate is one of the most polluted wastewaters which cause great concerns due to landfill implementations for municipal ...

In a bioreactor landfill, waste biodegradation, generation of gas and leachate, two-phase flow mechanical deformation closely couple with each other. Recirculated leachate can accelerate biodegradation landfill gas. A significant occurs due to suction change, the increase in both pressure could affect slope stability decrease effective stress. this paper, full coupled hydro-mechanical-biodegrad...

The occurrence of Gram-negative pathogenic and opportunistic species, was studied for two years on air. soil and leachate from the San Nicolás Landfill. Aguascalientes, Mexico. For soil and leachate four samplings were done, two during the dry season and two during the rainy season. For soil there were 15 sampling points, the leachate samples were taken on the leachate tank. For air, twelve sam...

We conducted experiments to evaluate the effects of soluble components in senescent leaf material on the growth and development of the eastern tree hole mosquito, Aedes triseriatus (Say). Oak leaves that were either leached for three days to remove the labile nutrient fraction, or were not leached, served as basal nutrient inputs in each experiment.Mosquito performance in microcosms containing ...

In order to identify the effect of P. arachnoideum, we studied 11 native tree species commonly used in reforestation projects. Bioassays were conducted in laboratory to evaluate the effect of bracken leachate on the germination and morphology of seedlings. Juveniles of some of these species were planted in two adjacent but contrasting areas in relation to the dominance of P. arachnoideum. The e...

since treatment of landfill leachate is quite complicated, there is a need to develop a system thatis capable of providing high treatment efficiencies. in this study, the treatment performance of a jet - loopmembrane bioreactor (jlmb) operated at different organic loading rates was investigated by observing thechanges in chemical oxygen demand (cod), total kjehldahl nitrogen (tkn) and total amm...

This paper provides an alternative treatment system for landfill gas and leachate control in order to reduce the energy consumption and disposal cost, using the recycled landfill gas as the combustion promoter for incineration of the leachate. This study starts by providing a literature review to summarize and analyze different approaches being applied to landfill leachate treatment. Subsequent...

Fragmentation grenades contain Composition B (RDX and TNT) within a steel shell casing. There is the potential for off-site migration of high explosives and metals from hand grenade training ranges by transport in surface water and subsurface transport in leachate. This treatability study used bench-scale columns and mesocosm-scale laboratory lysimeters to investigate the potential of hydrated ...