RESUMENLa reutilización de aguas depuradas constituye una fuente alternativa y sostenible para atender demandas agrarias, urbanas y de ocio. Además, su empleo permite liberar los recursos de agua de mayor calidad para garantizar usos prioritarios, como el urbanoturístico. En regiones con elevada vulnerabilidad frente a las sequías y con problemas de escasez hídrica, como son Murcia y Valencia, la reutilización de aguas regeneradas se ha afianzado durante las dos últimas décadas para garantizar suministros agrícolas, urbanos (jardines y baldeo de calles), recreativos (campos de golf) e industriales. Ello se ha visto favorecido por una mejora de las tecnologías de depuración, mediante tratamientos terciarios avanzados que incluyen desalinización. Este trabajo ofrece un balance de las iniciativas más destacadas de reutilización de aguas depuradas en las regiones de Murcia y Valencia, algunas de ellas pioneras a escala internacional.
I n the course of the centuries the urban space has changed, in the viewer, the idea of the compact and defined city turning it into a series of elements that have invalidated the symmetries, the profiles, the topological and architectural overlays, giving rise to a fragmented and often without recognizable boundaries landscape. Infact the actual national and international debate concerns the need for a new and critical sensitivity in dealing with new projects, often more like art installations out of context than to work at a reasonable initial situation environment, not only from a structural point of view and in relation to formal and responsible one. From these considerations, comes the need to a project of knowledge that sees the theme of the survey drawing representation of anthropic spaces as inescapable planning act. The task of recognition and choice of the levels of analysis, of the representation scales, of the forms of the landscape drawing is, in itself, the first step of a critical operation of complex systems in order to identify the origin and transformation matrix, in fact we need to make a sort of deconstructivism in order to recompose the guidelines of the new design of urban spaces, through the conservation and preservation of social and cultural values related to the place of analysis. The project of knowledge is articulated through various techniques of digital representation through direct and indirect surveys, direct observation, reading and manipulation of images, comparison between historical and actual maps, with the aim to critically consider the project as an action in progress in place and time through evaluations of possible future scenarios, even and especially through digital three-dimensional representations. Is, however, evident that, to be safeguarded in the correct way, the landscape should be used in an equally suitable. Therefore the protection, without a program for a more updated reuse results in the exclusion of the Cultural Heritage of the local context and social. The design should be approached as an opportunity interaction between the science of restoration, architectural design and all the knowledge and techniques designed to ensure comfort levels, sustainability, accessibility and security, updated by the standards of European Landscape Convention (Florence, 2000) and Decree of the President of the Council of Ministers of December 12, 2005 Identification of the necessary documentation to verify the landscape compatibility of the proposed actions, pursuant to Article 146, paragraph 3, of the Code of Cultural Heritage and Landscape in the legislative decree of 22 January 2004 and 42.
Abstract:The Spanish Mediterranean regions have been affected by several factors over the years (climatic conditions of aridity, high demands, quick and intense urban and population growth, climate change), which that have generated a negative water balance in which water contributions are unable to meet the demands. The aim of this paper is to evaluate the adaptation strategies that have been developed in these cities in order to adjust their hydrosocial cycles to development and future scenarios. Diversifying supply sources by resorting to new resources has been a necessity that has stimulated the expansion and integration of non-conventional water sources (desalination and the reuse of reclaimed water) and sustainable solutions. The theoretical analysis developed in this paper is corroborated by the study of the hydrosocial cycle evolution of three cities in the Southeast of Spain, and the adaptive measures that the different actors involved in the cycle have developed in each of them. The input and output are taken into account in this system thanks to the information provided by the management companies in each of the phases (urban consumption, treated and reused volumes, desalinated volumes), which highlight how the diversification of resources and the incorporation of non-conventional resources have been essential for adaptation.
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