Large ships are be self-sufficient in the provision of drinking water. To do this, ships are equipped with reverse osmosis equipment, which prepares vitally important drinking water from unsavoury seawater by removing the saline solute. Ships can extract water from the sea outside the 15-mile zone.
Before seawater reaches the reverse osmosis equipment, it is disinfected with chlorine and then stored in tanks. Immediately before salt removal, the chlorine in the seawater must be eliminated so that the sensitive membranes of the reverse osmosis equipment are not damaged. Once the seawater has had the salt removed, it is chlorinated again and pumped into large storage tanks. Water is then stored for later use in these tanks. The requirement for water depends greatly on the time of day.
Both with chlorination and chlorine removal (with sodium hydrogen sulphite) the desired water values are determined using ProMinent’s measurement and control technology. ProMinent’s dosing pumps and complete dosing systems handle dosing of different chemicals.
Another possibility for the supply of drinking water is water storage in bunkers in harbors. The ship’s water tanks using a hose system, are filled with drinking water from the municipal drinking water mains. So that sterile water can also be guaranteed here, the water has chlorine added in the correct proportion per volume before it reaches the ship. This is also done by ProMinent’s metering pumps or dosing systems. ProMinent measurement and control technology looks after checking and recording values.
Besides drinking water treatment there are many other water treatment tasks required on ships:
- Effluent treatment
- Bathing water treatment (swimming pools, whirlpools, sauna plunge pools etc.)
- Operational water treatment (coolant for the ship’s propulsion and, where necessary, boiler feed water)
Here too, we are ready to meet your needs with the appropriate dosing, measurement and control technology and our extensive know-how. |