Based on the APU® system, the AnoPur™ system is specifically adapted for sulfuric acid purification in in aluminum anodizing. Dissolved aluminum is continuously removed from sulfuric acid used in anodizing baths to reduce the contaminants to a consistently low level. This eliminates the need for bath decanting, reduces acid purchasing costs, and ensures a consistent and predictable anodizing process.
Etching or chemical milling with caustic soda can often be the greatest operating expense in aluminum anodizing. Our CER™ Caustic Etch Recovery System continuously crystallizes and removes dissolved aluminum from caustic soda etchants and returns the caustic to the etching/milling tanks for reuse resulting in reduced chemical costs, waste treatment costs, and labor requirements.The separated aluminum trihydrate crystal contains a marketable and salable value.
The DPU™ System recovers phosphoric acid and mixed acids in aluminum finishing operations. The system combines a cation resin bed with a water elutable resin bed to economically remove dissolved aluminum from phosphoric acid rinse water, which then concentrates phosphoric acid up to 85% to be reused.