Acid recovery

Since nowadays acid solutions are widely used in industry as metal strippers, surface activators, neutralizers, protective agents or even providing anti-corrosive properties, their handling has become extremely important, either by their volume as by the cost it implies.
Throughout their working life acids get usually loaded with metals or any other product affecting their working efficiency, therefore, depuration becomes essential with the resulting expenses on chemical products and waste management.
The combination of different techniques such as: vacuum evaporation, crystallization, ionic delay, ionic exchange, ultra-filtration, etc..., together with technologies exploiting energy and the use of special materials, make possible, at present, to treat important effluent flows, recovering the acid bath working performances and obtaining, besides, and added value.