EU limits of Al in sewer water: a criticism from anodising industry

Abstract The objective of this work is to provide a description of the aluminium surface treatment process, to finally identify, with reliable numerical data, the concentrations of aluminium in wastewater. The motivation of this work lies in the low values of imposed limits, from which it arises a strong economic technical problem, which requires costly purification processes. They were taken into consideration aspects of plant type and regulatory entire aluminium anodic oxidation process, and it is given space to reflection on aluminium toxicity to humans and the environment from which they cannot originate the limits that law.