Environment & Sustainability
- Environment at ANA
- Our airports
- Our commitments
- Our environmental management
Water supply management.
Water is a precious resource that is becoming scarcer and scarcer. Water quality is essential for the pursuit of human activities and maintaining biodiversity, progressively threatened by global warming.
Responsible management of this resource is a strategic priority for the environmental management system at ANA airports. The company uses smart metering to manage and control water consumption in the airport facilities. This includes restaurants, sanitary facilities, irrigation of green spaces, washing vehicles, pavements and buildings, as well as consumption associated with firefighting drills. At ANA airports, the water supply comes from specialised suppliers and/or own facilities.
Also of note is how the company monitors the quality of water for human consumption, aimed at ensuring the health of users of all ANA airports and improving consumption efficiency.
Therefore, the company began the Water Footprint project in 2011, placing itself in the forefront in comparison to other national companies, as was the case with the Carbon Footprint. Using and adaptation of the methodology presented in The Water Footprint Assessment Manual”, ANA calculated the water footprint of its airports up to 2015.
Currently, as has already been done for the energy area, ANA has started carrying out water audits in the different airports it manages.
Water Efficiency: Impactful projects
Pursuing the aim of reducing consumption and increasing water efficiency, the company has highlighted some of the many measures and projects implemented and underway:
Did you know that at the Azores airports...
• Because of the rainfall in the islands, artificial irrigation of the green areas at the airports is rarely needed?
• In the green areas at Ponta Delgada Airport, we plant species adapted to the region according to their lower water needs?
Did you know that at Faro Airport...
• We dry wash our vehicles, which gives an average 85% reduction of water consumption compared to conventional washing?
• A project aimed at reusing the water from washing aircraft and testing the Airport Firefighting Service vehicles is under development, aimed at reducing water consumption? This Portuguese project is a candidate for the VINCI Environment Award?
• In the green areas at Faro Airport, we plant species adapted to the region according to their lower water needs?
• We give the water from the noria (waterwheel) at Faro Airport to Algarve University for use in the Ramalhete Research Station for breeding seahorses and other species of fish of commercial interest (sea bream , turbot, etc.) in captivity?
Did you know that at Lisbon Airport...
• We receive data via WATERBEEP (contract with EPAL) that also allow us to detect anomalous consumption and act rapidly in the event of disruption of the water supply network?
• We are adapting the system created at Porto Airport, which comprises reusing the water used during testing of the pumping system of the firefighting vehicles, for use in the future Lisbon Airport fire station, where rainwater will also be reused?
• In the green areas at the airport, we plant species adapted to the region according to their lower water needs?
• We have optimised watering of the green areas on the ground side of the airport using the Trigger system, with virtual sensors that control the humidity according to soil conditions and the real needs of the plants, permitting average savings of 30%?
• Estamos a adaptar o sistema criado no Aeroporto do Porto, que compreende o reaproveitamento da água utilizada durante os testes ao sistema de bombagem das viaturas de combate a incêndios, para integrar no futuro quartel de bombeiros do Aeroporto em Lisboa, no qual serão também aproveitadas as águas pluviais?
• Plantamos, nas áreas verdes do Aeroporto, espécies adaptadas à região, selecionadas em função da sua menor exigência hídrica?
Did you know that at Beja Airport...
• We have implemented EPAL's ultrasound WONE system, which allows leaks in the water supply network to be detected and resolved and reduces water consumption by around 43%?
• We water almost 90% of the green spaces at Beja Airport using the drop-by-drop system?
Did you know that at the Madeira airports...
• In the green areas at Madeira Airport, we plant species adapted to the region according to their lower water needs?
• We have channelled the runoff water from the runway and the parking apron at Porto Santo Airport to the reservoir, located in an area close to the airport? This is the largest irrigation water storage structure on the island. The reservoir water, as well as water from other sources, is used for watering the landscaped areas in the airport and in other parts of the island.
• We have installed a drop-by-drop watering system in the green areas at Madeira airport?
• The green spaces at Madeira Airport are partially watered using water from the “levadas” – irrigation channels that guide the available water from the highest places to lower lying land?
Did you know that at Porto Airport...
• We reuse the water collected from the disposal points for bottles of liquids near the security checkpoint for cleaning and watering in the airport?
• We were able to reduce water consumption by 40% thanks to a system that allows some of the water used for testing the pumping system on firefighting vehicles to be reused? This project won the VINCI Innovation Award and is being replicated in other airports.
• We have reduced the water used for flushing toilets by 75% by using a vacuum drainage system?
ANA’s activities generate three different types of effluents:
• effluent from run-off from paved areas, potentially contaminated with hydrocarbons – rainwater;
• effluent from the containment of spillages and domestic wastewater;
• domestic wastewater.
To deal with rainwater, which has a higher potential impact, systems are being installed for pre-treating the water before it is discharged into public collectors or the water environment. Thus, albeit not exhaustively, there are hydrocarbon separators on the aircraft parking aprons, the vehicle refuelling areas and in the garages and workshops.
Over the last decade, ANA has been investing in improving the wastewater and rainwater drainage systems at its airports, in some cases remodelling the existing networks (Lisbon, Porto, Faro, Ponta Delgada and Horta) and introducing programmes for monitoring the quality of the wastewater, rainwater and the run-off produced.
The effluent produced by the company is sent to the following places:
• Porto and Beja airports: Own wastewater treatment plants, with one being in the implementation phase at Ponta Delgada Airport;
• Lisbon and Faro airports: connection to the municipal collector;
• Santa Maria Airport: connection to a septic tank followed by a filtering trench run by the Municipal Council;
• Flores and Horta airports: septic tank followed by an absorption tank operated by ANA.
The results obtained from the monitoring programmes underway showed that, in the case of some wastewater, rainwater and run-off, the parameters established by law have been fully complied with at ANA airports.
With regard to the management of industrial effluent, of note is the manual at Humberto Delgado Airport (Lisbon), which establishes the terms for the occurrence of the emission of this effluent in the network of collectors. Read it here.
Gestão da água