13 Jan AREMA IS AWARDED THE CONTRACT FOR THE EXECUTION OF THE WORKS FOR THE VALLMOLL WASTEWATER TREATMENT PLANT AND UPSTREAM COLLECTORS AND OPERATION.
On 29 October 2021, the Catalan Water Agency awarded the contract for the construction and operation of the upstream collectors and the new WWTP in Vallmoll (Tarragona) to the joint venture formed by the companies AREMA, RUBAU and CICLAGUA for more than 3 million euros. The purpose of the contract is to carry out the work necessary for the construction of collectors and a waste-water treatment plant to convey and treat the waste water generated in the municipality of Vallmoll.
To convey the wastewater intercepted in the municipality, a gravity sewer is planned along a length of 968.8 m in corrugated HDPE with a diameter of 400 mm SN8. The WWTP has been designed with a capacity of 400 m³/day. To cope with the high daily variability of both flow and pollutant loads and to guarantee the required pollution removal, the planned treatment solution for the water line consists of a coarse roughing, headworks pumping, pre-treatment, a homogenisation tank, a primary treatment and a biological treatment with prolonged aeration of the Anoxic/Oxic (A/O) type. As regards the sludge line, a thickener, centrifugal dewatering and storage of dry sludge in a silo are planned.
The works, which are scheduled to start in February 2021, are scheduled to be completed in March 2023. This will be followed by the start-up and operation period, which will last for a further year. This is the second joint award to AREMA and RUBAU since the Rubau Group acquired the company specialising in water, waste and the environment, AREMA, thus reinforcing its commitment to the 2030 agenda and its sustainable development and ecological transition objectives.