The contract calls for improvements to the physical-chemical treatment lines and sludge dewatering.

The Balearic Water Agency has put out to tender a contract for the supply of several pieces of equipment to improve the physical-chemical treatment and sludge dehydration lines at the Eivissa Wastewater Treatment Plant (WWTP). The works are valued at 1.3 million euros, including VAT.

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The constant delays in the construction of the new Sa Coma wastewater treatment plant make improvements necessary at the Vila WWTP, which will improve the quality of the municipal wastewater treated and will be useful when the Sa Coma WWTP comes into operation and the Vila WWTP is integrated into the pumping system of the new facilities.

The actions to improve the sludge line include the replacement of the dry sludge pumps, the sludge silo and two centrifuges; the installation of new pumps to transfer the thickened sludge to the centrifuges; the installation of a new thickening bridge and new equipment to add polyelectrolyte to the thickened sludge.

With regard to improvements in the physical-chemical treatment, it is planned to place coarse grids in each of the roughing channels to try to eliminate the excessive amount of fibres and coarse waste arriving from the sewage system, which collapse the screens. In addition, new bridges will be provided for the desanding and degreasing screens, and the bridge of one of the lamellar decanters and the lamellae will be replaced.