Physicochemical and bacteriological characterization of discharges leachate of Kenitra in Morocco

摘要

The Public discharge of kénitra city of Morocco receives a around 120 000 tonne / year of waste which generate a large volumes of leachate. The objective of this study is to determine the physicochemical and bacteriological characteristics of this leachate so as to evaluate the impact on the environment and water resources. The results shows a very high levels in terms of mineral matter (Cond = 29 ms / cm) and suspended solids (SS = 584mg / l). More or less significant levels of organic matter (BOD5 = 126 mg / l) were also detected. Concentrations recorded chlorides are very high relative to other values usually reported in the literature (Cl- max = 7323 mg / l). Concerning the heavy metals, the results shows a high concentrations of iron (200 000 mg / l), Cu (1100 mg / l), Ni (834 mg / l) and Pb (432 mcg / l). Regarding the evaluation of bacteriological characterization, the results show a very poor microbiological quality compared to the existing standards. The high toxicity of this type of leachate without any prior treatment present a real risk to the environment and water resources.