How to obtain high performance in anodizing with low operational costs, sludge reduction and zero liquid discharge

Nowadays, high quality and low operational cost are the keys to success in any type of industry. In particular an anodizing plant can now adopt innovative technologies, which allow the plant to obtain very high performance, resulting in very uniform anodizing layers in many colors that are resistant to strong UV light. These anodic layers are highly corrosion resistant not only to acid, but also to alkaline corrosion, which is requested especially by the automotive industry. Operational costs can be kept much lower than in conventional plants due to specific electronic devices, which can monitor all the energy and chemical wastes. As regards water savings and waste water treatment, it is possible to reduce water consumption to zero or almost zero. Zero Liquid Discharge plants are now available with an affordable investment and with low operational costs. The innovative patented zero discharge system is a revolution compared to conventional physical chemical systems, and has been particularly designed for the treatment of liquid wastes derived from anodizing plants and powder coating pre-treatment. All of the above technologies are described in detail in this paper, with pictures and practical examples of industrial applications.