Seawater intrusion control by means of a reclaimed water injection barrier in the Llobregat delta, near Barcelona, Catalonia, Spain

2012 ◽  
pp. 217-228 ◽  
2012 ◽  
Vol 66 (10) ◽  
pp. 2083-2089 ◽  
Author(s):  
F. Ortuño ◽  
J. Molinero ◽  
T. Garrido ◽  
E. Custodio

The main aquifer of the Llobregat delta (Barcelona, Spain) has been affected by seawater intrusion since the 1960s. The Catalan Water Agency (ACA) has sponsored the construction of a positive hydraulic barrier in order to stop the progress of seawater intrusion advance due to the intensive aquifer development. The hydraulic barrier consists of 15 wells into which highly treated reclaimed water from the waste water treatment plant of the Baix Llobregat is injected. Water is subjected, prior to the distribution to the injection wells, to secondary and tertiary treatments, and later to ultrafiltration, UV disinfection without chlorination, and salinity reduction through reverse osmosis. A preliminary pilot phase of the project was started in late 2007, with highly positive results, and the second phase started in mid 2010. Hydrogeological and hydrochemical monitoring data indicate an efficient performance and aquifer improvement. The evaluation of such efficiency and operational costs has been analyzed and discussed.


Water ◽  
2017 ◽  
Vol 9 (4) ◽  
pp. 263 ◽  
Author(s):  
Pere Camprovin ◽  
Marta Hernández ◽  
Sonia Fernández ◽  
Jordi Martín-Alonso ◽  
Belén Galofré ◽  
...  

2011 ◽  
Vol 63 (2) ◽  
pp. 220-226 ◽  
Author(s):  
M. Hernández ◽  
J. Tobella ◽  
F. Ortuño ◽  
J. Ll. Armenter

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.


1997 ◽  
Vol 198 (1-4) ◽  
pp. 226-244 ◽  
Author(s):  
V Iribar ◽  
J Carrera ◽  
E Custodio ◽  
A Medina

2008 ◽  
Vol 57 (4) ◽  
pp. 567-574 ◽  
Author(s):  
R. Mujeriego ◽  
J. Compte ◽  
T. Cazurra ◽  
M. Gullón

Water reclamation and reuse have become essential components of water resources management in the Metropolitan Area of Barcelona, by helping to develop additional water resources in the lower Llobregat River, one of its main sources of water supply. By generating a reliable flow of 300,000 m3/day of high quality reclaimed water, the options available for integrated water resources management have widely expanded to allow in-stream river water substitution, restoration of natural wetland areas, agricultural irrigation, and supply to a seawater intrusion barrier. Those management options have been possible thanks to the implementation of an extensive water distribution system that allows distribution of reclaimed water to a point 15 km upstream of the reclamation facility, and to a seawater intrusion barrier within a few kilometres of the plant. The cost of producing reclaimed water using a physico-chemical process (0.05 €/m3) and the investment required for such a facility (0.21 €/m3 annual capacity) are very close to those of similar large scale projects in Spain. However, higher degrees of treatment, such as demineralization for agricultural irrigation and for injection into a seawater intrusion barrier, result in considerable increases of both water reclamation cost and investment costs.


Author(s):  
Hyun Sun Park ◽  
Norihiro Yamano ◽  
Kiyofumi Moriyama ◽  
Yu Maruyama ◽  
Yanhua Yang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document