International Water Treatment NA (North America) was founded in 2003. Our main activity is non-chemical water treatment of any fresh water system to prevent corrosion. This is achieved by installing “ELYSATOR” in the different heating, cooling and steam generating systems in the industrial, housing and marine applications.

History
ELYSATOR is a Swiss product (reg. trademark) with more than 30 years of experience and with thousands of installations in all kinds of systems. (Industry, hospitals, private housing, food processing etc.) The first maritime installations were made in 1994. And now, thousands of Elysators has been successfully installed on vessels worldwide.

Usage
The Elysator can be used in any kind of closed or partially closed Systems with circulation (Marine and Industrial) where corrosion might occur.
Marine: Elysators are installed into new buildings & existing vessels for all kind of fresh water systems where corrosion might occur. Cruise ships are an excellent example of the diversity of the Elysator. On these types of vessel they are used for protection of FW cooling systems, boilers, main engine cooling, air-conditioning units, azipod propulsion and also potable hotwater.

Industrial
Elysators are installed in many industrial systems including airports, dairies, food processing, power plants (also nuclear). They are also used in the central heating systems of many large housing and apartment complexes, hotels and hospitals.

How It Works
The function of the Elysator is based on the anodic/cathodic principle i.e. letting a less noble metal (magnesium) be sacrificed  (corroded) instead of the system itself, related to galvanic series / elements. During the process the oxygen in the water will be absorbed creating H2O and magnesium hydroxide. When installed the Elysator, the entire system will be protected from corrosion. Even aluminium and aluminium

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What happens? Dilution of magnesium Anode: Mg(s) ? Mg2+(aq) + 2e? Cathode: ?O2 + H2O + 2e? ? 2OH? Total reaction: Mg(s) + ?O2 + H2O ? Mg (OH)2 Advantages No chemicals Minimum maintenance Self regulating Kills and prevents growth of bacteria Savings in cost of chemicals and prevention of corrosion related failures Fast ?Pay back? Improved water quality due to sludge and deposits removal Environmentally safe and meets ISO 1400 requirements

Illustration: Typical values measured during the first month after installing the Elysator. On the engine cooling system of a 17 year old ship.

1. pH - Value
Corrosion is also due to acidic water. (low pH value, evaporated water normally holds a pH at aprox.5,5) The ELYSATOR system automatically regulates the pH value to approx. 9.5 (This is caused by splitting of magnesium hydroxide from the anodes).

2. Electrical Conductivity
100% pure water is non-conducting. It is important that electrical conductivity is kept as low as possible in order to avoid galvanic corrosion as well as to reduce the stress on pumps, gaskets, heat exchangers etc. The efficiency of the ELYSATOR is proportional to the conductivity, which means that the ELYSATOR is regulating itself in accordance to the condition in the water.

3. Deposits
Major parts of the deposits are oxides of Fe (iron) and Cu (copper). They are both a result of corrosion due to an oxygen surplus, low pH or a galvanic current. The amount of dissolved copper is a measure for the ongoing corrosion process in your system. Through the ELYSATOR the water will be neutralised and metallic surfaces stabilised. Corrosion is therefore eliminated and the water stays clear, clean and without sediments. The deposit sludge is simply removed by daily draining of the Elysator.

Elysator Catalogue

http://www.unopdf.no/iwtm/runningmaintenance/

http://www.unopdf.no/iwtm/reference/

http://unopdf.no/iwtm/productcatalogue/

http://www.unopdf.no/iwtm/dnv_verification/