Tintoria Emiliana has always paid great attention to textile chemistry for the use of certified dyeing processes, also introducing natural dyes from dye plants, natural earths and colouring pigments obtained from metal oxides recovered from industrial waste. Over the last ten years, TE’s constant research and experimentation has focused on water recovery. Thanks to our new purification system, we have managed to recover 80% of the water and sodium chloride from our dyes through an ultra and nano filtration system. The remaining 20% is further treated and sent to the biological treatment plant for disposal, while 80% of the water is reused for new dyeing cycles.
The new purifier is a technologically advanced system that uses membranes capable of separating wastewater through a catalytic oxidation process to obtain a concentrate of water and sodium chloride separated from everything else, which is dye water and other substances. The remaining wastewater, further degraded by an oxygenation system, is purified in our biological purification plant that produces activated sludge.
Essentially, this plant allows us to achieve two results: the recovery of primary products and lower operating costs for the biological plant. The great advantage of this plant is its economic and environmental sustainability.

NEW WASTEWATER TREATMENT PLANT

This research project, carried out with our partner IRIDE ACQUE, has led to the construction of a fully operational plant capable of addressing various issues related to the environmental and economic sustainability of production processes.

WASTE TREATMENT LINE
Residues from the salt recovery line (and related backwashing) are treated using an advanced catalytic oxidation process – EMER – developed and patented by IRIDE Acque. After treatment, the effluent, with reduced pollution impact and completely decoloured, is conveyed to the existing biological purification plant and from there to discharge.

SALT RECOVERY LINE FROM DYEING WASTEWATER
The plant consists of a microfiltration unit, a ceramic membrane ultrafiltration unit and, finally, a 50 m³/day nanofiltration compartment.

SALT RECOVERY

Up to 80% recovery of the NaCl used.

ENERGY EFFICIENCY

The EMER system consumes less energy than conventional treatments.

OPERATING COST SAVINGS

By recovering 80% of sodium chloride, the company significantly reduces the costs associated with purchasing new salts and disposing of saline effluents.

REDUCED ENVIRONMENTAL IMPACT AND REUSE

The reuse of water and salts reduces the discharge of hazardous chemicals, contributing to compliance with ZDHC regulations and improving the company’s environmental sustainability.

REDUCTION OF POLLUTANT LOAD BIOLOGICAL PLANT

The reduction in the load entering the plant has resulted in less burdensome operating conditions and a significant reduction in operating costs.