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NEW TECHNOLOGIES
Refinery water cyanides
remediation
Alkaline chlorination: an Serena De Maria, R&D Engineer health’s problems such as weight loss,
thyroid effects, and nerve damage. This
Ivan Saracino, R&D Manager
optimized solution developed Walter Tina, Chief Operating Officer explains the increasingly stringent limits
that must be respected before dischar-
Cannon Artes
by Cannon Artes for cyanides ging the cyanides containing wastewaters
and that push towards the optimization of
reduction in a refinery water ining, coal coking, ore the processes to be adopted for cyanides
degradation. Among processes that could
leaching, pharmaceuti-
treatment plant cals and refinery are just be currently considered for cyanides tre-
some of the several indu- atment could be mentioned: Alkaline ch-
stries currently responsi- lorination, Caro’s acid process, activated
Mble for the production of carbon filters, hydrogen peroxide, ozone.
wastewater containing cyanides. These Among them alkaline chlorination, althou-
compounds show a very high potential gh it cannot be considered as a new pro-
toxicity and environmental impact: short cess, shows the high potential to efficiently
term exposure to cyanides cause neuro- break down cyanides. It consists in a two-
logical effects while long term can cause stage reaction of cyanides oxidation by
60 Impiantistica Italiana - Novembre-Dicembre 2022
