operate an evaporator. Not to mention that an evaporator takes up a lot of
© Aluminco
FOCUS ON TECHNOLOGY
space, which is another high-priced asset nowadays. For better sludge management, moreover, our waste water treatment plant ends with a filter press that reduces its volume up to 30-40 times.” “We are very pleased with our collaboration with CIE and with its water treatment technology, because it guarantees constant supply of high quality water to our pre-treatment plant preceding the powder coating stations,” states Aluminco chemical technician Fotis Karvelas, also managing the WWT system. “We already knew CIE as an expert in this sector and we had no doubts in choosing them. Their technical assistance before, during, and after the plant’s installation was also excellent. We have established a continuous collaboration relationship with Antonella Monaco, which is enabling us to maintain our excellent water conductivity results over time”.
Fields of application of the PUR-ALL® technology The PUR-ALL® system is advantageous for water treatment processes in both large and small plants. It has one limit: it only applies to the treatment of acid solutions. “Companies employing a combined acid-alkaline pre-treatment operation can only use PUR-ALL® for the treatment of fluids from the acid
Aluminco chemical laboratory.
stages. This applies to both coating and anodic oxidation systems. The purification of alkaline waste water
water in general, regardless of the
with an integration to their existing
requires the use of an evaporator or
substrate nature. This includes, for
purification plant. In this case, the
a combined osmosis + evaporator
example, stainless steel pickling and
greatest difficulty encountered was
system, always preceded by a
any processes containing phosphoric,
the limited space available. However,
physical-chemical treatment unit.”
sulphuric, or hydrofluoric acids and
we managed to take advantage of
“On the other hand, the PUR-ALL
metals, from coil coating to the
several already existing elements,
technology does not apply to
production of wheels, radiators, car
such as the reaction tanks, and
aluminium treatment plants alone,
components, and much more,” states
we only added the necessary
but to the treatment of acid waste
Falcone. “We supplied Aluminco
equipment.”
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international PAINT&COATING magazine - JULY/AUGUST 2020 - N. 64
49