Augas de Galicia awards Tedagua the contract for the design and construction of the Gandarío WWTP
The Council for the Environment, Territory and Infrastructure of the Regional Government of Galicia, through Augas de Galicia, has awarded TEDAGUA, as part of a joint venture with Constructora San José, the contract for the design and construction of the general drainage collection at Gandarío Waste Water Treatment Plant (WWTP) in the municipality of Bergondo (A Coruña). The project has a completion deadline of 38 months and a contract budget of 3,810,650.85 euros. The work will be 80% co-financed by the European Regional Development Fund (ERDF).
This project will resolve deficiencies in the drainage and wastewater treatment infrastructure in the Gandarío area. Specifically, the towns that will benefit from the project are Gandarío, Moruxo, Bergondiño, Cangas, O Casal, and Vilanova. The current situation is complicated by its location in a beach area that receives a massive influx of holiday-makers in the summer, with sewage discharged directly to the Betanzos inlet.
The following infrastructure will be built:
- A 4,340-metre network of PVC collectors Ø 315 and 400 mm for household sewage which will operate by gravity, collecting the effluents from the existing and future collectors and sending them to the new Gandarío WWTP.
- Three intermediate pump stations on the general collection network, with the corresponding delivery sections.
- A biological urban waste water treatment plant (WWTP) with final disinfection by ultraviolet rays. The biological treatment will consist of a suspended biomass process using activated sludge with extended aeration with nitrification-denitrification. In order to minimize both the visual impact and noise and odours, the elements of the WWTP that could potentially generate odours are located in closed buildings equipped with a deodorizing system with activated carbon filters. It will have a capacity to treat an average flow of 2,250 m3/day, with peaks up to 2,700 m3/day to handle an estimated equivalent population of 6,000.
- A drainage conduit for treated effluents from the WWTP to the discharge point in the Betanzos inlet, almost one kilometre from the coastline.