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01-08-2022 | Original Article

Green roof drained rainwater quality assessment: a physicochemical analysis from a case study in Northeastern Brazil

Authors: Sylvana Melo dos Santos, Érika Pinto Marinho, Glenda Cordeiro de Oliveira Lima, Everton Santos de Barros, Yan Ranny Machado Gomes

Published in: Sustainable Water Resources Management | Issue 4/2022

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Abstract

Green roofs have attracted a lot of attention from architects and engineers based on the benefits associated with their use. This research was carried out in a Brazilian semiarid region, where water is first needed for drinking and food preparation. This paper investigates the water quality drained from two green roof systems and one roof with tiles; the physical–chemical parameters were investigated. Rainwater and water percolating separately through each portion of the substrate were analysed. The results show that the water that drains from green roofs has undergone major changes in its parameters, compared to water draining from the conventional roof. It was observed that the change in water quality parameters depends on the vegetation used. In comparison with national standards for water reuse, it was concluded that the water from the green roofs was not suitable for non-potable uses, such as landscape irrigation and toilet flushing.

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Title: Green roof drained rainwater quality assessment: a physicochemical analysis from a case study in Northeastern Brazil
Authors: Sylvana Melo dos Santos
Érika Pinto Marinho
Glenda Cordeiro de Oliveira Lima
Everton Santos de Barros
Yan Ranny Machado Gomes
Publication date: 01-08-2022
Publisher: Springer International Publishing
Published in: Sustainable Water Resources Management / Issue 4/2022
Print ISSN: 2363-5037
Electronic ISSN: 2363-5045
DOI: https://doi.org/10.1007/s40899-022-00698-x

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