Contact
Veolia Water Technologies Deutschland GmbH

Gerold-Janssen-Straße 2
28359 Bremen, Germany
Phone: +49 421 53705 - 0
Fax: +49 421 53705 - 440
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Post-Treatment

Mineralisation and De-Acidification MIA-COM

A post-treatment of desalinated water from evaporators or reverse osmosis units such as the SRO-COM is necessary to get healthy, potable water. 

The mineralisation and de-acidification process inside the MIA-COM unit help to prevent corrosion and improves health protection due to higher quality drinking water. 

The application of the mineralising unit has advantages for crew and passengers, as well as for the equipment material for distribution, storage and consumers such as air-conditions, ice makers, heating systems etc.

Chemical Dosing Units for Water Treatment

Dosing Units on Board:

Fresh water and service water on board of ships is necessarily taken from various sources. To compensate the varying water quality the water has to be treated with chemicals.

With RWO dosing units you can easily and reliably condition the water to serve the intended use and to meet the technical requirements. 

The field of applications includes the dosing of:

  • Acids for alkalinity reduction and scale prevention
  • Polyelctrolytes for coagulation of suspended solids and an improved subsequent filtration
  • Scale inhibitors to avoid scale deposits on reverse osmosis membranes
  • Disinfectants for shock treatment in order to avoid bacterial growth
  • Chlorine to avoid biological growth in pipes and storage tanks
  • Hydrated lime or caustic soda for pH adjustment to neuralize dissolved free carbon dioxide

Ultraviolet Disinfection UVS-COM

RWO’s UV units consist of a reaction chamber with the UV lamp and a separate control cabinet. The UV lamps, which emit over 90% of the total UV emission at the optimum wave length of 254 nm, are fitted into the reaction chamber and protected by a UV transparent quarz glass. 

Disinfection of potable water by UV radiation is a safe and reliable alternative to other methods such as chlorination and is also used as final polishing before distribution / prior to consumption.

The radiation causes photochemical reactions in the cells of micro-organisms, thus inhibiting essential cell functions. UV radiation is most suitable for sterilisation as an exposure to UV-C radiation kills up to 99,9 % of the bacteria and viruses.

Drinking Water Softening SOE-COM

Hardness in water is caused by the ions of calcium and magnesium. The hardness of the water is of prime concern for many technical applications because of its scale-forming tendencies. Therefore, some water users onboard ships need softened water, e.g. hot water circuits, laundry water, galley pantry, (staining) boiler feed water, cooling water. We recommend the RWO Drinking Water Softener SOE-COM. It is the ideal treatment step after a seawater reverse osmosis system such as the SRO-COM.

Optimum water quality

Our water softeners operate using the ion-exchange process. The hardness minerals, calcium and magnesium, contained in the water are exchanged with sodium when flowing through the softener. To set an optimal water hardness between 6 and 8° dH the blending can be optionally integrated into the system. After exhaustion of the ion-ex-change capacity the softener will be regenerated with brine.

Minimal resource consumption

The special control of the plant calculates the required salt and water flow before each regeneration. The resource consumption is significantly reduced because only the actual required quantity of salt and water is used. This protects the environment and reduces operation costs.