Scienco/Fast | How does a Scienco InTank Ballast Water Treatment System work?
In this animation, Scienco/Fast illustrates the working principle of the Scienco InTank Ballast Water Treatment System (Scienco InTank BWTS). The Scienco InTank ballast water treatment system is a second-generation solution to the problem of ballast water treatment. This alternative, “second generation” solution elegantly provides treatment in the tanks during ship voyages and avoids operational and commercial risks for high ballast-dependent ships.
0:10 Inline systems treat port water at the intake.
0:28 Scienco InTank treats ballast water during the voyage without filters.
0:35 The Scienco InTank solution is based on chemical injection and recirculation.
0:47 NaOCL is produced onboard by an EC-generator or optionally liquid bulk dosed. NaOCL is produced from seawater, and it is then fed to the dosing modules. Using existing piping to draw water to aft and redeliver via new pipes to InTank static nozzles. Only a small percentage of a tank's volume is circulated.
1:19 The dosing and mixing in takes one to three hours per tank.
1:25 TRO is measured, and re-dosed is applied when required. The Scienco InTank total treatment time can be as low as 36 hours.
1:31 The treatment can start anytime and can be delayed on longer voyages. This is the best guarantee to control regrowth as the treatment includes a neutralization event.
1:46 The neutralization is done via the same recirculation loop. The treatment and neutralization are completed during the voyage.
2:02 Your vessel arrives at the next port with all tanks treated and neutralized.
The best confidence of regulatory compliance with the least impact on vessel operations.
InVoyage™ + InControl™ = InTank™
Technical compliance of a ship with an operable type-approved BWTS and the uncertainty may rise on actual biological compliance for longer voyages. Potential risk on regrowth of marine species and pathogens during longer voyages might risk unwanted results from ballast water sampling by Port State Control. Current Type-approved BWMS all work around these fundamental aspects of treating ballast in port, in line. No Fully Type Approved BWTS on the market is designed to control and prevent regrowth on longer voyages quite like the Scienco InTank System.
The Scienco InTank ballast water treatment system, based on recirculation and active total residual oxidant (TRO) monitoring, also introduces the ability to control regrowth. Treating in the ballast tank during the voyage elegantly bypasses these fundamental issues and provides many benefits. The design solution, in principle, is simple and robust. When a vessel uses the Scienco InTank solution, water is taken up into the ballast tanks in Port without any treatment and no changes to the existing procedure. A small portion of ballast is circulated from one ballast tank at a time. This circulation loop provides the means of applying and mixing in oxidants. The oxidant used is sodium hypochlorite (NaOCL) or commonly known as bleach. NaOCL can be generated on board via an electrochemical generator or liquid bulk dosed. The circulation loop also enables monitoring of TRO levels inside each tank and a means for injection of a neutralizer solution prior to discharge. The consistency and successful inactivation of target organisms and pathogens is verified by and controlled via an employed municipal wastewater treatment metric: Concentration-Time dosing (CT dosing).
The Scienco InTank solution does NOT require a filter mechanism. Port water taken in flows uninterrupted to the ballast tanks, distinguishing it from most conventional in-line systems.
Due to the applied method of CT-dosing, Scienco InTank also inactivates larger species and pathogens, removing the requirement for pre-treatment, such as filters.
A filter-free solution eliminates the risk of ballast inflow reduction or shutdown, a widely reported negative spin-off of in-line BWTS.
Treatment of ballast water whilst a ship is in transit with the Scienco InTank BWTS effectively eliminates many of the associated risks related to in Port treatment, especially for high ballast-dependent ships, such as cargo ships.
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