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UNIVERSIDADE DE TRÁS-OS-MONTES E ALTO DOURO (2009)

Reutilização de Água : Utilização de águas cinzentas in situ

Coutinho, Ana Cristina Ribeiro Afonso de Matos

Titre : Reutilização de Água : Utilização de águas cinzentas in situ

Auteur : Coutinho, Ana Cristina Ribeiro Afonso de Matos

Université de soutenance : UNIVERSIDADE DE TRÁS-OS-MONTES E ALTO DOURO

Grade : Tese de Doutoramento em Ciências de Engenharia - Engenharia Civil 2009

Résumé
Water reuse in our country has been going through the reuse of water in the irrigation of outdoor spaces, golf courses and gardens, after treatment in a wastewater treatment plant. This centralized practice can, though, not be revealed as the most advantageous one. In situ water reuse, that eliminates the costs associated to the facilities of pumping wastewater from the central treatment plant for the distribution networks, can be less expensive and more favorable to the environment. On the other hand, it allows the use of the less polluted waters, namely the greywater, what will facilitate its treatment. However, in this perspective, some important issues can rise, namely the ones that have to do with the protection of the public health and with the warranty of viability of this practice. The aim of this work is to give a contribution for the knowledge of the qualitative and quantitative characteristics of greywater, and show the results obtained in a system of a simplified treatment, considering in situ reuse of water. In a first phase, several sampling campaigns were made to analyze greywater quality. Simultaneously it has been performed several campaigns to measure the amount of water used in the houses and was also made an inquiry for the study of the discharges distribution along the day, of the several sanitary devices. Later, with the financial supports of Martifer II INOX, a system was built where the bentonite application was tested as a process of simplified treatment.

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