Roof selection for rainwater harvesting: Quantity and quality assessments in Spain

Farreny, Ramon; Morales-Pinzón, Tito; Guisasola, Albert; Tayà, Carlota; Rieradevall, Joan; Gabarrell, Xavier

doi:10.1016/j.watres.2011.03.036

Cited by 250 publications

(187 citation statements)

References 43 publications

Supporting

Mentioning

170

Contrasting

Unclassified

Order By: Relevance

“…Sophisticated modelling would be essential in case the results have to be used for urban planning strategies. In this view, several facets connected with RWHs and irrigation should be addressed, such as runoff water quality [63,69], tank water balance modelling, and performance [70][71][72] to define the suitable tank size by also taking into account other non-potable domestic water supply (e.g., WC flushing) and cost-efficiency analyses [68,73]. Guiding research efforts in this direction is of paramount importance, since water saving performance is highly affected by site-specific conditions such as the local rainfall pattern, the habits of the household dwellers, and the characteristics of the RWH and of the building [74].…”

Section: Resultsmentioning

confidence: 99%

“…We considered a conservative value of efficiency of 60% for the catchment area to compensate for the effects of leaks, wind, and rainfall rates. In this sense, the literature reports values between 70% and 95% resulting from the interaction of climatic and architectural factors [63]. High efficiency values (up to 95%) can be reached if the system is in perfect condition (no leaks) and during a period with slow gentle rain.…”

Section: Rooftop Rainwater Harvestingmentioning

confidence: 99%

See 1 more Smart Citation

Exploring Rooftop Rainwater Harvesting Potential for Food Production in Urban Areas

et al. 2017

View full text Add to dashboard Cite

Homegrown fruits and vegetables are gaining popularity in many metropolitan areas with several facets connected to the wider urban agriculture phenomenon. At the same time, the relationship between urban food production and irrigation water is pivotal in terms of resource management. In this paper, we investigated water savings through the collection and use of harvestable rainwater from buildings' rooftops to irrigate 2631 fruits and vegetables gardens in the urban area of Rome (Italy). The methodology makes use of existing geospatial data and data derived from satellite image classification to estimate food gardens' irrigation requirements and harvestable rainwater from nearby buildings' rooftops. The comparison of the annual harvestable rainwater with irrigation needs allowed for computing the proportion of water self-sufficient gardens as well as the amount of gardens whose water needs might be partially fulfilled with rainwater. Statistics were produced by land use type (horticulture, mixed crops, olive groves, orchards, and vineyards) and under the hypothesis that irrigation systems with low and high field application efficiency might be employed. We found that 19% and 33% of the gardens could be water self-sufficient for the low and high irrigation efficiency scenario, respectively. The remaining gardens, by using the available rainwater, could satisfy 22% (low efficiency) and 44% (high efficiency) of the water needs resulting in a reduction in the use of conventional water sources.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Rooftop Rainwater Harvestingmentioning

confidence: 99%

Exploring Rooftop Rainwater Harvesting Potential for Food Production in Urban Areas

et al. 2017

View full text Add to dashboard Cite

show abstract

“…This is similar to model set-ups used to analyse modern RWH systems (e.g. Farreny et al 2011;Lange et al 2012) andancient cisterns (e.g. Garbrecht 2001;Connelly and Wilson 2002;Mantellini 2015).…”

Section: Building the Modelmentioning

confidence: 86%

“…The area available for rainwater harvesting is unique for each cistern and can be elucidated based on the archaeological remains, when well preserved. Water collection is typically limited to roof tops in modern urban contexts, and this was probably also the case in ancient times considering the presence of refuse on the ground (Farreny et al 2011;Klingborg 2017).…”

Section: Supply Sidementioning

confidence: 99%

Modelling the freshwater supply of cisterns in ancient Greece

Klingborg

Finné

2018

Water Hist

View full text Add to dashboard Cite

In this paper, we model the function of rainwater harvesting cisterns in ancient Greece. The model calculates on a monthly basis: (1) the collected and stored volume of water; (2) the amount of water extracted for individual use; and (3) the potential accumulated surplus available by the end of a month. The potential of the model is explored through two case studies based on material from Olynthos in Thessaly and Dystos on ancient Euboia by running 26 consecutive annual cycles utilizing modern precipitation data from meteorological stations as a proxy for ancient precipitation and precipitation variability. Our results show that cisterns can provide ample amounts of freshwater to households and function as buffers for water stress in shorter (monthly), and longer terms (seasonally, yearly and between years). The two cisterns in this paper yield between 10.7 and 86.6 m 3 per annum with a strong variability in collected water volumes within and between years. Yet, this variability is, largely predictable and thus the use of cisterns in ancient Greece should be viewed in the light of predictable variability that required active participation from members of the household to be efficient.

show abstract

“…É preciso observar o tipo de telhado e condições ambientais, pois interfere na qualidade da água recolhida [22]. A telha de metal, telhas de concreto e telhados frios são adequadas para captação da água pluvial, no entanto, os telhados verdes produz uma alta concentração de carbono orgânico dissolvido, que poderia levar a altas concentrações de subprodutos de desinfecção [23]. Quanto maior o volume de precipitação, menor a carga de poluição nas amostras [24].…”

Section: Ii5 Reservatórios De áGua Pluvialunclassified

Proposal for a rainwater utilization project for non-potable purposes in vertical tank

Silva¹,

Jimenez²,

Andrade³

2016

ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA)

View full text Add to dashboard Cite

Water is essential for human survival and also for the entire ecosystem of the planet. The lack of this precious asset will cause irreversible damage to the planet. Many countries are having various problems with the scarcity of drinking water. Some regions of Brazil are facing a water crisis of its natural resource. As an example the city of São Paulo, which recently presented a historic decrease in its reservoirs. Humanity must be aware of the importance of water and its waste. This new culture must be taken immediately, through sustainable renovation of actions to ensure the maintenance and regeneration under appropriate conditions for future generations. The objective of this article is to enable a rainwater collection system, easy to handle, practical for installation, occupying little space and economically viable for the final consumer. The materials presented in a major way was polyvinyl choride (PVC), it is a lightweight material, easy to handle, has a high durability relevant to other materials such as metal pipes and is not reagente to no other kind of material, keeping integrates water quality, without changing it. The methods applied were the steps to progress the proposed project identifying the six steps whose implementation procedures in accordance with current regulations. The expected results are presented as a contribution proposed for sanitation and environmental management, in order to enable solutions that promote the use of rainwater for non-potable purposes with storage vertical tanks for the cities that have monthly precipitation in min (60 mm).Keywords: Rainwater, use, water resources, vertical tank Proposta de projeto de aproveitamento de águas pluviais para fins não potáveis em cisterna vertical RESUMO A água é fundamental para a sobrevivência humana e também para todo o ecossistema do planeta. A falta desse bem tão precioso acarretará prejuízos irreversíveis ao planeta. Muitos países estão tendo diversos problemas com a escassez de água potável. Algumas regiões do Brasil estão enfrentando uma crise hídrica do seu recurso natural, exemplo disso foi à cidade de São Paulo, que recentemente apresentou uma baixa histórica em seus reservatórios. A humanidade precisa se conscientizar da importância da água e do seu desperdício. Essa nova cultura, deve ser tomada de imediato, através de ações de renovação sustentável que garanta a manutenção e regeneração em condições adequadas para as futuras gerações. O objetivo do artigo é viabilizar um sistema de captação de água pluvial, de fácil manuseio, prático na sua instalação, ocupando pouco espaço e viável economicamente para o consumidor final. O material apresentado de forma principal foi o policloreto de polivinila (PVC), pois é um material leve, de fácil manejo, possui uma alta durabilidade pertinente aos outros materiais, como os tubos metálicos e não é reagente a nenhum outro material da natureza, mantendo integra a qualidade da água, sem alterá-la. Os métodos aplicados foram às etapas para evolução do projeto proposto identificando...

show abstract

Roof selection for rainwater harvesting: Quantity and quality assessments in Spain

Cited by 250 publications

References 43 publications

Exploring Rooftop Rainwater Harvesting Potential for Food Production in Urban Areas

Exploring Rooftop Rainwater Harvesting Potential for Food Production in Urban Areas

Modelling the freshwater supply of cisterns in ancient Greece

Proposal for a rainwater utilization project for non-potable purposes in vertical tank

Contact Info

Product

Resources

About