This study investigates the efficacy of conventional and modified bio-sand filters as a low-cost filtering device for treatment groundwater contaminated with food waste leachate. Two kinds materials, areca nut husk water hyacinth stems, have been selected to alter filter. In filters, ashes these wastes are used filter medium. The ashes' physical characteristics, such pH, ash content, moisture m...

The details of a semi-aerobic landfill type are described and compared with an aerobic landfill type, particularly related to the characteristics of the solid waste stabilization and the stabilization mechanism. Semi-aerobic landfill is an attempt to lay the leachate collection pipe, comprising the perforated main and branch pipes and gravel, at the bottom of the landfill to discharge leachate ...

background: untreated leachate is being discharged into the environment in many countries worldwide. leachate treatment methods have not been unified so far due to the variable composition of leachate. moreover, the lack of appropriate treatment and disposal of leachate causes environmental pollution. this study aimed to compare removal efficiency of chemical oxygen demand (cod) and total suspe...

The main objective of this work was to evaluate an effectiveness of removing organic and inorganic pollutants from landfill leachate in a long-term reverse osmosis (RO) study. Investigations were carried out during the first year of RO exploitation since February till September 2013. Over 20 parameters were analysed both in leachate and permeate samples. In the first 1-year operation, the treat...

Various adverse effects related to landfill leachate have made leachates an important issue in past decades, and it has been demonstrated that landfill leachate is an important source of environmental estrogens. In this study, we employed chemical analysis of some already evaluated estrogenic substances, in combination with a bioassay using several specific biomarkers (e.g., plasma vitellogenin...

Landfills are the final repository for most of the discarded material from human society and its "built environments." Microorganisms subsequently degrade this discarded material in the landfill, releasing gases (largely CH4 and CO2) and a complex mixture of soluble chemical compounds in leachate. Characterization of "landfill microbiomes" and their comparison across several landfills should al...

background: leachatecontaining high levels of organic pollution with ammonia, halogenatedhydrocarbons, heavy metals and inorganic salts. among the various methods fortreating leachate, has been developed membrane processes so that a morebiological process of membrane processes is used for separation of solid -liquid. the aimof this study was to evaluate the efficiency of membrane bioreactor eff...