The Spanish Ministry for Ecological Transition and Demographic Challenge (MITECO) has concluded work on the new Wastewater Treatment Plant (WWTP), pipelines and marine outfall in Addaia (Es Mercadal, Menorca).
With investment of €8.15 million, the infrastructure will serve a population equivalent of 21,667. It will prevent the adverse effects of discharges on the Son Saura and d’en Castell sandbanks and improve their conservation. These sandbanks feature in the Natura 2000 network and house posidonia oceanica meadows.
The work carried out includes the construction of the WWTP and the Wastewater Pumping Stations (WPS) in Addaia, Coves Noves and Son Parc, as well as the work required to put the respective wastewater pipelines into operation.
The new WWTP features a biological process based on extended aeration with nutrient removal and sludge treatment. The treated wastewater is discharged into the sea by means of a marine outfall, which has a terrestrial section of 3,185 metres and a subsea section of 2,163 metres. The water discharged is compliant with all legal and environmental legislation and does not affect the marine environment in any way.
Following official acceptance of the work, procedures have commenced for the delivery of the WWTP to the Department of the Environment and Territorial Planning of the Government of the Balearic Islands, for the purpose of use, maintenance and operation. On completion of these procedures, the Government will, in turn, deliver the facility to the Balearic Islands Water and Environmental Quality Agency.