Troistorrents WWTP – Renewal of dehydration
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Description & Project Overview
The dehydration of digested sludge from the Troistorrents WWTP dates from the construction of the WWTP and has never been renewed. With 34 years, the belt press and all the ancillary equipment (pumps, flocculation installation, electrical panels, etc.) have far exceeded the lifespan of 25 years generally accepted for electromechanical equipment. Currently, the low degree of automation of dehydration involves many hours of operation for each dehydration campaign (launch, monitoring and shutdown). In addition, the dehydration capacity being low (2m3/h), the dehydration campaigns are long, and it is not possible to leave the installation operating without supervision. In terms of upkeep and maintenance, costs are high because the equipment is obsolete. Belt presses have been out of production for a long time and spare parts are hardly available. The project provides for the complete renewal of the dehydration installation including ancillary equipment. The subject of the tender consists of the dismantling of existing installations, the sizing, supply, assembly and commissioning of a complete sludge dewatering system.