Suchergebnisse

International audience ; Several mechanisms, well known with the collective term « de novo-synthesis », are leading to the formation of polychlorinated dibenzo(p)dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in the flue gas downstream from combustion processes. Due to the harmonization of the EC legislation, the limit value of 0.1 ng l-TEQ/m3 has to be met for the clean gas of hazardous waste incinerators and likely coming up as a limit for municipal waste incinerators as well.Since a recent time new sampling's methods have been developed. The AMESA system is one of them. It gives the possibility to realize a long time sampling with a result which is representative of a few weeks of incineration and emission. The signification of the value has been improved. ; Différents mécanismes, regroupés et connus sous le terme de « Synthèse de Novo » conduisent dans la phase de refroidissement d'un process d'incinération à la reformation de dioxines et de furanes présents dans les gaz d'émission. Dans le cadre de l'harmonisation des réglementations européennes, le législateur a introduit une valeur limite supérieure de 0,1 ng l-TEQ/m3 pour le secteur de l'incinération.A côté des méthodes classiques de prélèvement discontinu, de nouvelles techniques voient aujourd'hui le jour. Le dispositif AMESA offre ainsi la possibilité d'un contrôle longue durée, représentatif de plusieurs semaines de fonctionnement d'une usine d'incinération, améliorant d'autant la signification du résultat obtenu.

Different mechanisms, grouped together and known as the Novo Synthesis, lead to the cooling of an incineration process to the reformation of dioxins and furans present in the emission gases. As part of the harmonisation of European legislation, the legislator has introduced an upper limit value of 0,1 ng l-TEQ/m³ for the incineration.In addition to conventional discontinuous sampling methods, new techniques are now emerging. The AMESA system thus offers the possibility of long-term monitoring, representative of several weeks of operation of an incineration plant, thus improving the significance of the result obtained. ; International audience Several mechanisms, well known with the collective term « de novo-synthesis », are leading to the formation of polychlorinated dibenzo(p)dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in the flue gas downstream from combustion processes. Due to the harmonization of the EC legislation, the limit value of 0.1 ng l-TEQ/m3 has to be met for the clean gas of hazardous waste incinerators and likely coming up as a limit for municipal waste incinerators as well.Since a recent time new sampling's methods have been developed. The AMESA system is one of them. It gives the possibility to realize a long time sampling with a result which is representative of a few weeks of incineration and emission. The signification of the value has been improved. ; Different mechanisms, grouped together and known as the Novo Synthesis, lead to the cooling of an incineration process to the reformation of dioxins and furans present in the emission gases. As part of the harmonisation of European legislation, the legislator has introduced an upper limit value of 0,1 ng l-TEQ/m³ for the incineration.In addition to conventional discontinuous sampling methods, new techniques are now emerging. The AMESA system thus offers the possibility of long-term monitoring, representative of several weeks of operation of an incineration plant, thus improving the significance of the result obtained. ; Différents ...

International audience ; Several mechanisms, well known with the collective term « de novo-synthesis », are leading to the formation of polychlorinated dibenzo (p) dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in the flue gas downstream from combustion processes. Due to the harmonization of the EC legislation the limit value of 0.1 ng I-TEQ/m3 has to be met for the clean gas of hazardous waste incinerators and is likely coming up as a limit for municipal waste incinerators as well. This demands a lot of requirements not only referring to the flue gas cleaning devices but also to the sampling techniques, the analysis of PCDD/F and at least the overall quality assurance of the obtained results. The high reproducibility of the so called « combustion profiles » in the flue gas from municipal waste incinerators supplies an important contribution as a part aspect of the quality assurance. ; Différents mécanismes, regroupés et connus sous le terme de « Synthèse de Novo » conduisent dans la phase de refroidissement d'un process d'incinération à la reformation de polychloro- di-benzo(p) dioxines(PCDDs) et polychloro- di-benzo furannes (PCDFs), présents dans les gaz d'émission. Dans le cadre de l'harmonisation des réglementations européennes, le législateur a introduit une valeur limite supérieure de 0,1 ng I-TEQ/m3 pour le secteur de l'incinération. Cette valeur engendre à côté des efforts nécessaires d'épuration des rejets gazeux, des exigences techniques fortes pour le prélèvement des échantillons et leur analyse, ainsi que pour assurer la qualité du résultat obtenu. La très bonne reproductibilité des dénommés « profils d'incinération » obtenus pour des rejets gazeux d'usine d'incinération d'ordures ménagères offre en cela une bonne possibilité de vérifier la plausibilité du résultat obtenu et constitue donc un aspect important de l'assurance qualité de la mesure.

Different mechanisms, grouped together and known as the Novo Synthesis, lead in the cooling phase of an incineration process to the reformation of polychloro- di-benzo (p) dioxins (PCDDs) and polychloro- di-benzo furannes (PCDFs), present in the emission gases. As part of the harmonisation of European legislation, the legislator introduced an upper limit value of 0,1 ng I-TEQ/m³ for the incineration sector. This value also creates the necessary efforts to purify gaseous discharges, high technical requirements for sampling and analysis, and for ensuring the quality of the result obtained. The very good reproducibility of the so-called 'incineration profiles' obtained for gaseous discharges from a household waste incineration plant offers a good opportunity to verify the plausibility of the result obtained and is therefore an important aspect of the quality assurance of the measure. ; International audience Several mechanisms, well known with the collective term « de novo-synthesis », are leading to the formation of polychlorinated dibenzo (p) dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in the flue gas downstream from combustion processes. Due to the harmonization of the EC legislation the limit value of 0.1 ng I-TEQ/m3 has to be met for the clean gas of hazardous waste incinerators and is likely coming up as a limit for municipal waste incinerators as well. This demands a lot of requirements not only referring to the flue gas cleaning devices but also to the sampling techniques, the analysis of PCDD/F and at least the overall quality assurance of the obtained results. The high reproducibility of the so called « combustion profiles » in the flue gas from municipal waste incinerators supplies an important contribution as a part aspect of the quality assurance. ; Different mechanisms, grouped together and known as the Novo Synthesis, lead in the cooling phase of an incineration process to the reformation of polychloro- di-benzo (p) dioxins (PCDDs) and polychloro- di-benzo furannes (PCDFs), present in ...