EPSE

EPSE treatment go back to a Pirkanmaa-based pickling company in the early 2000s. At the time, Vesa Rissanen, the inventor of the EPSE method, owned a pickling company which did hard chrome plating for airplane parts. The process involved the dissolution of numerous metals in an acid which ultimately became hazardous waste. Together with a friend, who was also an entrepreneur, Rissanen began to think about how to get rid of the heavy expenses and finally, following numerous tests, he managed to precipitate the acid in such a way that the end result consisted of clean water and a multimetal precipitate. But then the airplane factory closed, and the chrome plating business came to an end. For years, the precipitation formulae remained in a desk drawer.