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GLD BWTS (Inert Gas)

Inert Gas Type
Optimized for large tankers, LNG/LPG carriers and large bulker/ore carriers

Coldharbour GLDTM (Gas Lift Diffusion) Ballast Water Treatment System is a unique in-tank system which uses the gas output from Sea GuardianTM Inert Gas Generator linked to specially designed gas lift diffusion (GLD) pipe assemblies inside the ship’s ballast tanks. Total ballast capacities from 20,000m3 up to 345,600m3. It is available for both new build and retrofit installations.

Features:

● No upgrades to ballast pumps and piping

● No disruption to ship operations

● No upgrades to power generation capacity

● No filters so no risk of blockages

 

In-tank and in-voyage

The Coldharbour Marine GLD™ Ballast Water Treatment System is a unique in-tank system which uses the gas output from our Sea Guardian™ Inert Gas Generator (IGG) linked to specially designed gas lift diffusion (GLD) pipe assemblies inside the ship’s ballast tanks.
Sea Guardian™ is the first 3rd generation IGG in the world, and any experienced inert gas engineer would quickly feel comfortable operating it. It generates ultra clean, very low oxygen inert gas. It is compact, stable, reliable and largely maintenance free.

Robust with no moving parts or filters

During the voyage, the output from the IGG is pumped (by standard type marine compressors) to the GLD™ units in the ballast tanks where the full treatment takes place. The GLD™ technology has no moving parts and as such is 100% reliable. It uses natural fluid dynamics to both thoroughly stir the ballast tanks and diffuse the inert gas into the ballast water.

No disruption to port operations

The system does not disrupt any aspect of standard ship operation. Ballast water is pumped into the ballast tanks as normal, with no restriction to flow.
Because the water is treated whilst the vessel is underway there is no possibility of any disruption to the vessel’s terminal operations. System performance is not affected by silt and solids levels within the ballast tanks or by changes in salinity.

No upgrades to ballast pumps & piping

The Coldharbour GLDTM BWTS is not connected to the ships ballast circuit in any way so there is no requirement to locate the equipment within the pump room. The Coldharbour GLDTM BWTS can be fitted almost anywhere on-board and is immune to the usual space constraints. The equipment can be located on any available space within the machinery casing and then enclosed within a new deck housing.

No upgrades to power generation capacity

The Coldharbour GLDTM BWTS  does not operate during ballasting or de-ballasting, as treatment takes place during voyage. No changes are required to ship’s power generation systems.

No filters so no risk of blockages

All filters, regardless of type have the inherent problems of not only blocking, but also of increasing pressure drop across them as they progressively clog until back flushing is triggered.
Both these issues significantly impact the ballasting/terminal process and the timings thereof, which are critical to the economic operation of vessels.