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Intéractions biogaz / mâchefers d’incinération d’ordures ménagères - Rétention d’H2S

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The most utilised methods for municipal waste disposal in France are landfilling and incineration. Storage of organic waste materials to landfill in anaerobic conditions produces landfill gas, which contains enough methane for combustion and energy recovery; however, landfill gas also contains trace compounds that can be corrosive, aggressive and hazardous to the environment. Among these compounds, we were particularly interested in the main sulfur compound, H2S, which in addition, causes olfactory nuisances. Incineration produces mainly one solid waste: Municipal Solid Waste Incinerator (MSWI) bottom ash, which needs to be stored or reused after treatment.This study, supported by the Novergie company, focuses on a new way of reusing MSWI bottom ash in the treatment and purification of landfill gas. The overall study concerned the purification capacities of bottom ash either alone or as a part of a mixture (with coke) towards H2S and other potentially harmful landfill gas compounds. Only results concerning H2S are discussed in this paper. A pilot experimentation unit was developed and operated at the Biovale company engineered landfill (Loire). The purification potential of bottom ash from North-Lyon incineration plant was experimented on real landfill gas. The additional study of interactions between bottom ash and the two main compounds of landfill gas (methane and carbon dioxide) is particularly interesting within the context of a full scale implementation in an engineered landfill. La majeure partie des ordures ménagères en France est éliminée via deux filières : le stockage et l’incinération. Le stockage en conditions anaérobies conduit à la formation de biogaz, riche en méthane mais qui contient des composés nuisibles et malodorants tels que H2S. L’incinération, quant à elle, génère principalement un sous-produit solide : les mâchefers d’incinération d’ordures ménagères qu’il faut stocker ou valoriser après traitement.Cette étude, menée pour le compte de la société Novergie, porte sur une nouvelle voie de valorisation des mâchefers (seuls ou en tant qu’éléments constitutifs d’un mélange) : l’épuration du biogaz de décharge. Une expérimentation de taille pilote installée sur le site de la société Biovale (Loire) a permis de quantifier le potentiel épuratoire d’un mâchefer vis-à-vis d’H2S d’un biogaz réel. L’étude complémentaire des interactions entre le mâchefer et les deux principaux composés du biogaz (méthane, dioxyde de carbone) apporte des informations particulièrement intéressantes dans le cadre d’une mise en œuvre réelle à l’échelle d’une décharge.
Title: Intéractions biogaz / mâchefers d’incinération d’ordures ménagères - Rétention d’H2S
Description:
The most utilised methods for municipal waste disposal in France are landfilling and incineration.
Storage of organic waste materials to landfill in anaerobic conditions produces landfill gas, which contains enough methane for combustion and energy recovery; however, landfill gas also contains trace compounds that can be corrosive, aggressive and hazardous to the environment.
Among these compounds, we were particularly interested in the main sulfur compound, H2S, which in addition, causes olfactory nuisances.
Incineration produces mainly one solid waste: Municipal Solid Waste Incinerator (MSWI) bottom ash, which needs to be stored or reused after treatment.
This study, supported by the Novergie company, focuses on a new way of reusing MSWI bottom ash in the treatment and purification of landfill gas.
The overall study concerned the purification capacities of bottom ash either alone or as a part of a mixture (with coke) towards H2S and other potentially harmful landfill gas compounds.
Only results concerning H2S are discussed in this paper.
A pilot experimentation unit was developed and operated at the Biovale company engineered landfill (Loire).
The purification potential of bottom ash from North-Lyon incineration plant was experimented on real landfill gas.
The additional study of interactions between bottom ash and the two main compounds of landfill gas (methane and carbon dioxide) is particularly interesting within the context of a full scale implementation in an engineered landfill.
La majeure partie des ordures ménagères en France est éliminée via deux filières : le stockage et l’incinération.
Le stockage en conditions anaérobies conduit à la formation de biogaz, riche en méthane mais qui contient des composés nuisibles et malodorants tels que H2S.
L’incinération, quant à elle, génère principalement un sous-produit solide : les mâchefers d’incinération d’ordures ménagères qu’il faut stocker ou valoriser après traitement.
Cette étude, menée pour le compte de la société Novergie, porte sur une nouvelle voie de valorisation des mâchefers (seuls ou en tant qu’éléments constitutifs d’un mélange) : l’épuration du biogaz de décharge.
Une expérimentation de taille pilote installée sur le site de la société Biovale (Loire) a permis de quantifier le potentiel épuratoire d’un mâchefer vis-à-vis d’H2S d’un biogaz réel.
L’étude complémentaire des interactions entre le mâchefer et les deux principaux composés du biogaz (méthane, dioxyde de carbone) apporte des informations particulièrement intéressantes dans le cadre d’une mise en œuvre réelle à l’échelle d’une décharge.

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