The Krustagroup Group has awarded MP’s Environ ment Area the tender for building a wastewater treatment plant in its new prawn processing plant, located in el Prat de Llobregat.

The most important conditions in terms of the design of this project are a lack of space and a minimal production of sludge. MP carried out an extensive audit of the different flows of wastewater generated in the process. The results indicated the possibility of implementing a treatment process based on an MBR-type aerobic biological reactor, a technology which fits in with the initial design conditions per fectly.

Moreover, the reactor has been constructed completely underground, with its sur face used for the movement of heavy vehicles in the loading bay area, resulting in a minimal use of useful space. In addition, after the continual operation of the plant in the month of June, no sludge was produced, meaning that expectations regarding this condition have been fully met.

During the audit, three types of wastewater were defined: wastewater from the defrosting, cooking and cooling tunnels. All the wastewater, which has a high count of suspended solids, is treated in the systems proposed by MP. The wastewater from the cleaning, cooling and sluicing processes has a moderate count of suspended solids and therefore bypasses the water treatment plant, so that the end combination fully complies with the specifications. Finally, the brine is collected and managed externally.

Subsequently, the same client, Krustagroup, again requested MP’s collaboration for the development of a water treatment plant in its new prawn and cephalopod processing plant in La Rabida, Huelva. This project is currently at the engineering stage.

Jesús Jiménez Rodríguez
Design Manager