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Barcelona, Spain

Hernandez M.,Water Technology Center | Tobella J.,Water Technology Center | Ortuno F.,ACA | Armenter J.Ll.,Aguas de Barcelona
Water Science and Technology | Year: 2011

The Llobregat Delta Aquifer has historically been a strategic water supply resource to the Barcelona metropolitan area. The use of river water combined with the exploitation of groundwater resources during dry periods has enabled the demographic and economic growth of the Barcelona area during the last fifty years. The aquifer overexploitation has entailed the decrease of groundwater level and the penetration inland of seawater intrusion. The main consequences have been the salinization of several wells and the deterioration of the groundwater quality. In this context, aquifer recharge has been practiced during nearly 40 years with the following objectives: (i) storing excess of water for times of less water availability, (ii) introducing an additional barrier for purification of water for a specific use and (iii) preventing the degradation of groundwater resources due to overexploitation or seawater intrusion. These methods, jointly with an efficient management of well extractions, have enabled to recover groundwater quality and therefore to guarantee the sustainable exploitation of such a vulnerable aquifer. © IWA Publishing 2011.


Piriou P.,Suez Environnement Cirsee | Devesa R.,Aguas de Barcelona | Puget S.,University of Burgundy | Thomas - Danguin T.,University of Burgundy | And 2 more authors.
Water Quality Technology Conference and Exposition 2010 | Year: 2010

Chlorinous flavors are one of the leading cause of customers' complaints and dissatisfaction with drinking water. To investigate potential regional differences in chlorine perception, sensory testing experiments were conducted in France and in Spain to assess consumers' sensory sensitivity (chlorine flavor detection threshold) as well as their liking and acceptance for chlorinated solutions. The chlorine flavor detection threshold was found to vary depending on countries (0.17 mg/LCl2 in France and 0.56 mg/LCl2 in Spain). According to the relation found between chlorine practices and average flavor detection thresholds, it is likely that habituation may support sensory differences rather than actual sensory sensitivity differences between countries. In addition, consumers' liking and acceptance for chlorinated water was found to be in agreement to their sensory sensitivity: the higher the detection threshold, the higher the acceptability for chlorinated waters. 2010 © American Water Works Association WQTC Conference Proceedings. All Rights Reserved.


Piriou P.,Suez Environnement | Devesa R.,Aguas de Barcelona | Puget S.,University of Burgundy | Thomas-Danguin T.,University of Burgundy | Zraick F.,Suez Environnement
Journal of Water Supply: Research and Technology - AQUA | Year: 2015

Chlorinous flavors are a leading cause of customers' dissatisfaction with drinking water. Potential differences in chlorine perception were investigated by conducting sensory testing experiments in France and Spain to assess consumers' sensory sensitivity (chlorine flavor detection threshold and supra-threshold intensity) as well as their liking of and acceptability for chlorinated solutions. In both countries, two groups of panelists were constituted based on their water drinking habits (tap vs. bottled water). Chlorine flavor detection threshold was found to vary depending on countries (0.17 mg/L Cl2 in France and 0.56 mg/L Cl2 in Spain). Taking into account that mean flavor detection thresholds were found in agreement with chlorine residuals delivered at tap, it is likely that habituation may explain sensitivity differences between countries. This hypothesis is supported by results showing no significant sensitivity difference at detection threshold levels, but significant differences between tap water and bottled water consumers at supra-threshold levels (flavor intensity). In addition, consumers' liking and acceptability for chlorinated water was found to be in agreement with sensitivity: the higher the sensitivity the lower the acceptability for chlorinated waters. Thus, French consumers or bottled water drinkers showed a lower appreciation of chlorinated water solutions and were especially less inclined to accept chlorinated water as drinking water delivered at tap. © IWA Publishing Journal of Water Supply: Research and Technology-AQUA 2015.


Marti M.G.,Aguas de Barcelona | Alonso J.M.,Aguas de Barcelona | Faus M.P.,Aguas de Barcelona | Ribot L.M.,Aguas de Barcelona
Tecnologia del Agua | Year: 2011

Since December 2009, Aguas de Barcelona is working through its Water Safety Plan (WSP) or Drinking Water Risk Management Plan (DWRMP) certified by the ISO 22000 standard. Thescope of the DWRMP covers the catchment and treatment in Sant Joan Despi waterworks and Barcelona's distribution network. The main benefits consist of emphasizing the monitoring of the critical points identified to keep the system under continuous control, as well as the development of indicators and tools to demonstrate that Aguas de Barcelona delivers safe drinking water continuously to almost 3 million consumers. Keywords: Drinking water, Water Safety Plan (WSP), Drinking Water Risk Management Plan (DWRMP), Hazard Analysis Critical Control Points (HACCP), ISO 22000 standard, Critical Control Points (CCP), health risk, critical limit.

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