ES-WAMAR - Environmentally-friendly management of swine waste based on innovative technology: a demonstration project set in Aragón (Spain)

LIFE06 ENV/E/000044

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Contact details:

Project Manager: Arturo DAUDÉN IBAÑEZ
Tel: +34 976 07 00 03
Email: adauden@sodemasa.com

Project description:


In the Spanish autonomous region of Aragón, almost 10 million pigs are produced annually. Pig production and related activities have major economic and social relevance for the region.

However, pig farming generates a slurry volume of 13.5 million m3 per year in the region and is responsible for pollutant emissions from non-point sources to surface water, ground water and air. This is a particular problem in areas of highly concentrated pig-rearing where the land cannot cope with the amount of slurry generated.

Before the project started, the Regional Government of Aragón had introduced an Integrated Waste Management Plan of Aragón (GIRA). This addressed the need to find a comprehensive solution to the environmental and social problems caused by waste. The plan has aimed to reduce waste generation in all sectors and enhance reusing and recycling.


The LIFE ES-WAMAR project aimed to improve the management of pig slurry so as to minimise its environmental impact by introducing an integrated management model for the processing and distribution of pig slurry. It sought to match the needs of arable farmers for fertilisers with the need of pig farmers to dispose of their slurry appropriately and economically through collective action.

It thus planned to: reduce soil, water and air contamination - especially nitrates from non-point sources – in areas around pig farms; and maximise nutrient recycling through the valorisation of the pig slurry on arable land. The management model also aimed to improve economic efficiency and minimise the energy requirements of the waste management.

The project planned to demonstrate the feasibility and sustainability of the correct integrated management model of swine waste at three sites in Aragón: Tauste, Maestrazgo and Peñarroya. It thus showed that the same model adapted to local circumstances could respond effectively to different locations.


This ambitious project successfully demonstrated the effectiveness and notable environmental, social and economic benefits of implementing local integrated systems for managing pig slurry.

The ES-WAMAR project carried out an environmental assessment in each of the three project areas selected. Three companies were set up - Tauste CGE, SI Maestrazgo and Tastavins CGE – as dedicated pig slurry management enterprises for each pilot area. The enterprises brought together interested farmers into a collective, formalised through specific contracts. Each company was responsible for planning, organising and implementing manure collection, treatment (where needed), distribution and field application.

In Maestrazgo and Tauste, the management was based on the collection and distribution of pig slurry from pig farms either via storage tanks, or directly via road or pipeline networks to the field. In Peñarroya, the collected slurry was transported by lorry or pipeline to a treatment plant for the production of a concentrated solid fertilizer and a liquid fertiliser (waste water). This reduced the transport costs for the solid part, as it is more concentrated and allowed the liquid fertilizer to be applied to arable land locally in quantities that the ground could cope with.

These management schemes were supported by use of BATs, including IT tools. It developed software - a Global Waste Management Tool – to support and optimise slurry management, and enable continuous assessment of and improvements to the schemes. The quantity of slurry managed increased steadily during the project implementation. The total volume of managed manure exceeded 800 000 m3 by the project end. The total volume of slurry treated in the plant reached 100 000 m3.

The collective management approach was found to enable cost-sharing, improved energy efficiency and higher control of field application, as well as ensuring support and engagement with the overall environmental aims of improved waste management. This was further supported by information and training events for technicians and farmers and the creation of 16 permanent jobs. The value of pig manure as organic fertilizer was demonstrated and widely accepted by farmers.

The project did not run long enough to monitor changes in pollution levels of air, soil and water, however positive trends were felt to be evident by all the authorities engaged. The key environmental benefits of the management approach are reduced nitrogen overload of the soil surrounding pig farms – reducing diffuse pollution - and replacement of chemical fertilizers with natural fertilizer on arable land – reducing energy demand and greenhouse gas production.

Further information on the project can be found in the project's layman report(see "Read more" section).


Environmental issues addressed:


Waste - Agricultural waste
Climate change Mitigation - GHG reduction in non EU ETS sectors
Air & Noise - Air quality monitoring


waste management‚  rural area‚  manure‚  agricultural waste‚  diffuse pollution‚  animal husbandry‚  climate change mitigation

Target EU Legislation

  • Industry and Product Policy
  • Directive 96/61 - Integrated Pollution Prevention and Control (IPPC) (24.09.1996)

Natura 2000 sites

Not applicable



Coordinator SODEMASA - Sociedad de Desarrollo Rural de Aragón S. A. U.
Type of organisation Development agency
Description SODEMASA (Sociedad de Desarrollo Medio Ambiental de Aragón) is the Environmental Development Society of Aragón – a public company that works to improve environmental management and sustainable development in the Aragón region.
Partners CEMAGREF (presently IRSTEA), France Agrupación para la Defensa Sanitaria del Porcino de Tauste (ADS de Tauste), Spain Comarca del Maestrazgo, Spain Peñarroya de Tastavins, Spain Govierno de Aragón, Spain


Project reference LIFE06 ENV/E/000044
Duration 01-OCT-2006 to 31-MAR -2011
Total budget 6,899,568.00 €
EU contribution 2,564,163.00 €
Project location Aragón(España) Bretagne(France)


Read more:

Leaflet Integrated Services of Maestrazgo S.L.U.
Leaflet Folleto general del proyecto
Leaflet "Tauste CGE Treatment Plant"
Leaflet "Treatment plant for pig slurry: Tastavins CGE"
Leaflet Project's brochure in French (1.8 MB)
Leaflet Servicios Integrales del Maestrazgo S.L.U. (1.2 MB ...
Leaflet Project's brochure in English (1.7 MB)
Leaflet "Planta de tratamiento de purín: TASTAVINS CGE" (1 ...
Leaflet "Planta de tratamiento TAUSTE CGE" (1.3 MB)
Project web site Project's website (ES/EN/FR)
Publication: Guidelines-Manual "Proyecto demostrativo de gestion colectiva del pu ...
Publication: Layman report Informe layman
Publication: Layman report Layman report
Publication: Technical report Project's final technical report
Video link "Environmentally correct management of pig slurry LIFE ES-WAMAR" (15')
Video link "Gestión medioambientalmente correcta del purín. Proyecto LIFE ES-WAMAR" (15')
Video link "Gestion environmentale du lisier de porc LIFE ES-WAMAR" (15')


Project description   Environmental issues   Beneficiaries   Administrative data   Read more   Print   PDF version