A “manual for the characterisation of textile SMEs” was issued to be used in companies characterisation. The document allows to obtain a detailed analysis, containing all the relevant process data for further elaboration of a comprehensive mapping of all processes related to water use. This manual and datasheets proved to be easy to use by companies and very useful for further company studies outside Aquafit4use consortia. The same procedure could be used for checking any textile company and it can be adapted to other sectors considering their specific conditions.

A very complete database was obtained with the characterization of relevant textile production processes. Data concerning water use, chemicals and energy were collected for a total of 46 production processes including yarn scouring, bleaching, dyeing and fabric desizing, bleaching, mercerizing, dyeing, printing and washing. On the other hand all batch discharged from each process (in total 184 different samples) were analyzed by measuring relevant parameters (in total 25). Future companies’ characterisation could concentrate on a detailed characterisation of   the mixed wastewater and on measuring few simple parameters on processes similar to the ones already in the database. In such a way the overall data collection will require much less time and effort.
According to the conclusions drawn from the analysis of the existing water and wastewater network and from the effluents characterization, simplified reuse network scenarios were designed. Scenarios are based on machinery separation and on effluents separation based on continuous monitoring of the effluents characteristics. In these scenarios, wastewater treatment technologies evaluated are different combination of UF, NF, AOP, MBR and evapoconcentration.

All scenarios were analyzed in terms of the water savings allowed and quality of the reclaimed water. Cost efficiency evaluation will be made based on the results of pilot scale testing. In such a way different scenarios will be compared and the best solution will emerge.

Do you know that………

The parameter responsible for preventing the possibility of recycling more water in textile is, besides colour or COD, salinity. For this purpose some additional innovative desalination technologies, successfully implemented in other sectors of the project, will be tested on laboratory scale in laboratories of project partners.

Davide Mattioli and Selene Grilli (ENEA)

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