Waste Water Treatment On Ships

All waste water, whether of municipal or industrial origin, ends up in waste water treatment plants. The same is true of waste water on modern cruise liners. Building on more than a century of expertise and innovation in the development of systems and solutions for the maritime sector, GEA offers waste water treatment technologies that are now used on cruise vessels.

Maximum sludge dewatering with the MBR Decanter

GEA’s separators and decanters are commonly used for processing fuel and lube oils, and for treating bilgewater, sludge and ballast water on ships. A more recent development for our decanters is the treatment of waste water in marine applications. The maritime solution is based on the membrane bioreactor (MBR) system that has for many years been used to separate treated water from the activated sludge. This system negates the need for a sedimentation tank. On board ship, the membrane-filtered surplus activated sludge is dewatered using a GEA UCD 305 MBR decanter, which can treat up to nine cubic meters of sludge per hour, and is an ideal size for cruise liners.

Membrane bioreactor technology

The membrane bioreactor generates a fine surplus activated sludge, which contrasts with the coarse sludge that is obtained using alternative technologies. The MBR decanter has been designed with features that are specifically designed to achieve maximum dewatering of this fine homogeneous fine sludge at high throughput capacities. Small in size, the decanter is in addition very easy to operate and can be adjusted to handle a range of effluent contents.  MBR decanters represent a tried-and-tested system for all types of vessel.