ACCIONA completes a new pumping system in the Palma II wastewater treatment plant

ACCIONA completes a new pumping system in the Palma II wastewater treatment plant

In November, a new pumping system was implemented in the Palma II wastewater treatment plant built by ACCIONA. The opening ceremony was attended by the President of the Government of the Balearics, Francina Armengol, the Regional Minister for the Environment and Territory, Miquel Mir, and the Mayor of Palma, José Hila.

It is a new pumping system incorporating pretreatment, a standby tank and a grease trap/interceptor located next to the Coll d’en Rabassa (WWTP II) plant in Palma de Mallorca.

The project was awarded by the Municipal Water and Drainage Company (EMAYA) for €27 million, the aim being to continue improving water quality in the Bay of Palma.

The pumping station has a capacity of 29,500 m3/hour and is divided into two different sections: one for the pretreatment phase of the current WWTP -consisting of three pumps with a maximum capacity of 9,000 m3/hour – and the other to the stormwater tank, made up of five 4,100 m3/hour pumps with a total capacity of 20,500 m3/hour.

The standby tank has a total capacity of 50,000 m3. It is divided into two parts, retaining rainwater at times of high precipitation to avoid large discharges of untreated water. It has also been designed to take the transition between the old and new treatment plants into account, which means that the construction work can be carried out without releasing waste into the environment.

The grease trap/interceptor collects wastewater and rainwater from Ricardo Ortega street and Avenida Gabriel Alomar (eastern part of Palma) and directs it over 3,046 metres to the Palma II WWTP or the standby tank.


ACCIONA has designed these new infrastructures to achieve the highest positive impact, thereby demonstrating its environmental commitment. Thanks to the project 90% of current discharges will be avoided, contributing to an improvement of the environment in the city of Palma and the beaches in the area.

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