Η Ευρωπαϊκή Νομοθεσία για τη Λεγεωνέλλα.
ΠΡΟΣΤΑΣΙΑ ΑΠΟ ΤΗ LEGIONELLA
ΚΑΙ ΤΙΣ ΕΠΙΚΑΘΙΣΕΙΣ ΑΛΑΤΩΝ
ΜΕ ΤΟ ΣΥΣΤΗΜΑ LEGIONCARE
ΤΗΣ ΤΕΧΝΟΛΟΓΙΑΣ AQUACARE®
Επισκεφθείτε τον δικτυακό τόπο www.ewgli.org: Είναι ο ευρωπαϊκός οργανισμός που ασχολείται με τη legionella.
Μέσα σε αυτόν τον δικτυακό τόπο θα βρείτε το The European Guidelines for Control and Prevention of Travel Associated Legionnaires’ Disease (Οι Ευρωπαϊκές Οδηγίες για τον Έλεγχο και την Πρόληψη της Νόσου των Λεγεωναρίων που Σχετίζεται με Ταξίδια), στο οποίο θα βρείτε μεταξύ άλλων το εξής κείμενο στη σελίδα 77:
“Ionisation” is the term given to the electrolytic generation of copper and silver ions
for use as a water treatment. Metals such as copper and silver are well known
bactericidal agents. They act on the cell wall of the micro-organism that alters the
cells permeability which, together with protein denaturisation, lead to cell lysis and
death.
Copper and silver ions are generated electrolytically and their concentration in the
water depends on the power applied to the electrodes. Copper and silver ion
concentrations maintained at 400 μg/l and 40 μg/l respectively can, if properly
managed be effective against Legionella in the planktonic and biofilm phase in hot
water systems. If however the water is softened then silver ion concentrations
between 30 to 20 μg/l can also be effective, provided a minimum concentration of
20 μg/l is maintained. This level of silver still requires copper ions to complete the
synergy.
The application of ionisation will need to be properly assessed, designed and
maintained as part of an overall water treatment programme. It should be noted
that in hard water systems, silver ion concentrations can be difficult to maintain due
to build up of scale on the electrodes, unless anti-scaling electrode cells are
employed. High concentrations of dissolved solids may precipitate the silver ions
out of solution. For both hard and soft water, the ionisation process is pH sensitive
and it is difficult to maintain silver ion concentrations above pH 7.6. The build -up of
scale and concentration of dissolved solids therefore needs to be carefully
controlled so that suitable ion levels are consistently maintained throughout the
system. This may require additional water treatments.
The method is easy to apply and is not affected by the temperature of the water.
However because the system is subject to fluctuations in concentration unless
automatic controls are employed, it is necessary to check the concentration of the
two metals regularly, as well as the pH of the water at 6-8. This technique is not
suitable for systems that employ zinc cathodic protection for water systems
because the metal deactivates silver ions. Furthermore, if the treatment is used
continuously it is necessary to check that the maximum permissible concentration
(CMA) laid down by current legislation for drinking water is not exceeded.
Από το κείμενο αυτό γίνεται προφανές ότι η ΕυρωπαΙκή Ένωση συνιστά τη μέθοδο ιονισμού με χαλκό και άργυρο ως την πιο ολοκληρωμένη μέθοδο για την πρόληψη και την αντιμετώπιση του βακτηρίου της legionella στις υδραυλικές εγκαταστάσεις.
Όσο αφορά τους περιορισμούς της μεθόδου, που αναφέρονται στις δύο τελευταίες παραγράφους, η Smart Technical Solutions έχει λάβει όλα τα απαραίτητα μέτρα για να τους εξαλείψει. Για περισσότερες πληροφορίες σχετικά με τους τρόπους εξάλειψης αυτών των περιορισμών επικοινωνήστε μαζί μας.
