Sekundärrohstoffe aus Abfall-Lösungen

Every year about 40 000 m³ of waste solutions from photographic fixing and developing processes are produced in Germany. A new method of reclaiming some base chemicals (silver, fixing salt, gypsum and ammonia) from these solutions has been developed for black and white photographic processes. The remaining waste water has a low COD-value and low concentration of dissolved salts. This method is considered further to develop the state-of-the-art technique and is economically feasible.