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Consorzio Cuoiodepur s.p.a.

Ponte a Egola Wastewater Treatment Plant

Consorzio Cuoio-Depur SpA was founded in 1980, with the aim of implementing and managing the compliance program to the environmental regulations, for the purification of liquid wastes from tanning processes of companies in Ponte a Egola.

In 1985 the company was transformed into a mixed consortium public-private, to majority private ownership, with the participation of the municipalities of San Miniato and Montopoli Val d'Arno, to manage the public service of collection and treatment of wastewater. The centralized system collects and treats all wastewater produced by industrial processes of the area, (about 5,000 meter cubic per day) and municipal wastewater (approximately 3,500 meter cubic per day), from the urban areas.

The wastewater treatment plant has reached its current configuration through successive expansion phases that have required important investments, both public and private.

The plant was continuously modified, in order to improve performances, on the base of data derived from extensive research on pilot scale experiments through the best available technology.

Currently, plant treatment capacity is estimated at 900,000 abitant equivalents. The different stages of the process are managed by a central computer system that detects and processes in real time the data relating to the functionality of the equipment, monitoring the main process parameters, the quantity and quality of the wastewater discharged from companies, as well as data related to emissions for monitoring environmental impact.

The plant develops and closes the wastewater treatment and sludge cycle, ensuring high efficiency of organic matter and nutrients (N and P) removal, before the final destination: the Arno river. Tannery primary sludge is used to produce fertilizers after thermal drying and mixing with by-product of industrial tannery process (Decreto del Ministero delle Politiche Agricole e Forestali del 7/12/2001).

Consorzio's constant and continuous attention to research and innovation has led over time to undertake links with universities and institutes research . This development has led to found in 2008, at its facilities, the CER2CO (Center for Research on Wastewater tanning), a joint laboratory between universities and enterprises established with the participation of the Department of Civil and Environmental Engineering at the University of Florence and Technological Pole of Santa Conciario sull'Arno.

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