English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study is based on monthly (1998-1999) sampling of domestic landfill leachates situated in Etueffont (Belfort, France). The results show that rain flows and water flows are not correlated. Overall, the measurements carried out monthly on leachates demonstrated a seasonal evolution of some chemical parameters all over the year. During summer, the rise of the ambient temperature resulted in an increase of the overall bacterial activity as shown by the decrease of the BOD (Biological Oxygen Demand), COD (Chemical Oxygen Demand) parameters and a rise of pH (8). Therefore, the BOD/COD ratio which describes the biodegradability of the medium reaches 0.18. Chloride concentrations are high (700 mg. l-1) and concentrations of total nitogen (NT) and ammonia (NNH4+) increase. During winter, the dilution induced by the rain flow points out a reversed pattern. This resulted in a decrease of the chloride concentrations (100 mg. l-1) and that of NT (198 mg. l-1). Consequently, the BOD and the zinc concentrations increase. The variation of zinc concentrations are well correlated with precipitations. This is mainly due to the heterogenous distribution of the zinc in the landfill. L’examen des analyses du lixiviat d’une décharge d’ordures ménagères broyées située à Etueffont (Territoire de Belfort, France) selon un pas d’échantillonnage mensuel sur un cycle hydrologique montre l’impact saisonnier des précipitations et de la température sur la composition du lixiviat. L’évolution saisonnière met en évidence la présence de deux facteurs physiques qui gèrent la composition des lixiviats (la température et les pluies). Les épisodes estivaux mettent en évidence une diminution de la DBO en raison du développement du compartiment bactérien. Ce phénomène s’inverse en hiver, et c’est la dilution par les pluies qui provoque des fluctuations importantes dans la composition du lixiviat.

Évolution temporelle de la composition du lixiviat d’une décharge à ciel ouvert: Effets des précipitations