A mathematical approach to find long-term strategies for the implementation of resource-orientated sanitation.
Water Sci Technol
; 67(7): 1442-54, 2013.
Article
en En
| MEDLINE
| ID: mdl-23552231
In the present discussion of sustainability centralised water infrastructures are exposed to new challenges, which may cause a conceptual alteration in urban water management. If technologies for closing urban water and nutrient cycles are to at least partially replace existing systems, then intensive reconstruction work becomes essential. The paper presents the development and implementation of a mathematical approach to minimise environmental impact and economic costs on the way to more source-controlled future states in urban water management. To find an optimal transformation strategy, a simultaneous project scheduling and network flow problem was defined as a bi-criteria mixed-integer program. An optimal solution is found by minimising two objective functions concurrently - the economic costs and 'ecologic costs' for the period of consideration. This paper discusses the influence of the weighting of these two costs on optimal transformation strategies for a real catchment in Germany. The results show that the approach can very well support decision makers when showing all impacts of transformation processes in detail. All in all, the developed model can be seen as a first step in strategy-finding for transformations in existing urban water systems.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Abastecimiento de Agua
/
Saneamiento
/
Administración de Residuos
/
Modelos Teóricos
Tipo de estudio:
Prognostic_studies
Aspecto:
Determinantes_sociais_saude
Idioma:
En
Revista:
Water Sci Technol
Asunto de la revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2013
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Reino Unido