Impact of the greenhouse effect on sewerage systems - Lund case study

نویسندگان

  • JANUSZ NIEMCZYNOWICZ
  • Janusz Niemczynowicz
چکیده

The possible impacts of modifications in rainfall patterns due to the greenhouse effect on the function of a sewerage system are studied based on a case study of the city of Lund, Sweden. The Storm Water Management Model is used to simulate changes in the runoff pattern. The paper lists the possible effects of increases in rainfall intensity on the urban water cycle, quantifies changes in the runoff pattern, and discusses the significance of detected changes in terms of economic and environmental consequences and the possibilities to undertake preventative measures. For the purpose of the present study, 10%, 20% and 30% levels of rainfall increase were assumed. In spite of considerable uncertainty regarding the potential future rate of hydrological changes, the examples given of possible impacts of the greenhouse effect on the function of the sewerage system bear witness to the great vulnerability of sewerage systems to the results of climate changes. Consequences de l'effet de serre sur les systèmes d'égouts étude de cas à Lund Résumé Les impacts possibles sur les systèmes d'égouts des modifications des précipitations dues à l'effet de serre ont été étudiées en tant qu'étude de cas dans la ville de Lund. A cet effet, a été utilisé un programme d'ordinateur "The Storm Water Management Model" afin de simuler les modifications de chûtes de pluie. L'étude analyse les effets possibles sur le cycle des eaux urbaines, en augmentant l'intensité des précipitations et le diagramme des intensités des pluies, et discute l'importance de la détection des changements dans un contexte économique et des conséquences sur l'environnement. Pour cet objectif, le niveau des précipitations a été augmenté de 10%, 20% et 30%. Bien que l'on ne soit pas très fixé sur le taux potentiel futur des changements hydrologiques, les exemples retenus, en considération de l'effet de serre sur les systèmes d'égouts, montrent que les changements climatiques rendent les systèmes d'égouts très vulnérables.

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تاریخ انتشار 2007