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The present research aims to characterize from biochemical point of view leachate samples from the urban waste storage facility located in Glina, Ilfov County. The measurements were focused on the concentrations in nitrates, nitrites, ammonium, phosphorus and other characteristics like pH, biochemical oxygen consumption and chemical oxygen consumption on samples taken at the entrance and the exit of the aeration lagoon. The methods used in the laboratory analysis for the leachate samples were in accordance with the methodology applied for wastewater treatment. The high CBO5 yield, between 62% and 78%, confirmed the ability of microorganisms present in leachate to decompose pollutants, to absorb the decomposed material and finally to eliminate them from the leachate in a high rate. Concerning the chemical consumption of oxygen, there was also high efficiency, i.e. values between 54% and 71%, which evolved simultaneously with the CBO5 variation.

Evolution of chemical and biological characteristics of Glina Landfill between August 2017 and June 2019. Biochimical evolution of Glina Landfill