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Treatment of Zinc/Nickel Rinse Waters

We currently have a Wastewater Pretreatment System to includes chrome reduction, pH neutralization, chemical precipitation, clarification, and filtering via a filter press. We are looking to install a nickel/zinc plating line. I hear that the rinse waters for the nickel/zinc bath are differcult to treat. Can someone give me some ideas on how to hanle these rinse waters?

Wendell Turner
- Cincinnati, Ohio, US

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Our company has a plant similar to which it describes; Nowadays we are working with a bath of 5.000 l of Zn/Ni and have had to install a module of oxidation to break the complexes that were formed by the additives acomplejantes of Not in this bath. Anyhow if the wealth of spilt his company is big and the volumes of small Zn/Ni, it is probable that they do not detect problems in the residual waters.

Nuestra empresa dispone de una planta similar a la que describe;Actualmente estamos trabajando con un baño de 5.000 l de Zn/Ni y hemos tenido que instalar un modulo de oxidación para romper los complejos que se formaban por los aditivos acomplejantes del Ni en este baño. De cualquier modo si el caudal de vertidos su empresa es grande y los volumenes de Zn/Ni pequeños, es probable que no detecten problemas en las aguas residuales.

Miguel Angel Martín
surface finishing shop
Madrid, Spain