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EASY CLEAN SYSTEM FOR LOW SULPHATES (LESS THAN 150 PPM) AFTER WASTE WATER TREATMENT FROM AN ANODIZIN

The main developments envisioned in the very recent years for the aluminium anodizing industry aim, as it usually happens, mainly in the direction of improving quality, efficiency (costs), environmental impact and productivity.

But the methods to obtain this results are the most different, and involve in a very unique way the different technologies of anodizing (mechanical, chemical, electrochemical).

We focalized in the environmental aspect of these technologies, with particular attention to the latest developments in the reduction of sulphate contents in waste waters. Sulphate contents is particularly important in environmental standards of different Countries and is becoming more and more stringent.

The different technological achievements are described, with a particular attention to determine the advantages of their combined and really integrated application along with this new technology for sulphates reduction.

Real industrial applications are shown in practical terms, along with a look to what could be some possible new outcomes in the near future.