Electrochlorination – Based Ballast Water Treatment Systems


A Training Course designed for Engineer and Deck Officers who are to be recruited on ships fitted with a Filtration – Electrolysis Ballast Water Treatment System. The focus will be on PURIMAR (Samsung), HI-BALLAST (Hyundai) and AQUARIUS EC (Wartsila). The overall aim of the course is to increase the awareness of the participants to the side stream, filtration – electrolytic ballast water treatment systems concept and key components.


To help the participating Officers understand:

  • the combination of filtration and electrolysis process during ballasting.
  • the importance of TRO sensors in adjusting the dose of free chlorine to ballast tanks or in the neutralization during de-ballasting.
  • the design limitations of these systems and their key components installed in the pump room, the engine room and other deck areas.


The Training Course will take place at the ATHINA Maritime Learning and Development Center.

Hands-on Training will be provided at a Samsung PURIMAR Simulator installed in the Electromechanical Laboratory.

The Training Simulator consists of (3) skids, the Filtering Unit, the Electrolysis Unit, the TRO Analyzer/Neutralization Unit and the Display Operating Panel.

Daily Schedule


  • 09:00 – 09:30: An overview of the available BWTS Technologies
    – Types of BWTS installed on Minerva Marine ships
  • 09:30 – 10:00: Legal Framework
    – The D-2 Performance (Treatment) Standard
    – BWM Convention & Compliance Dates
    – Developments in the STCW
    – The Code for the Approval of BWM Systems
  • 10:00 – 11:00: Terms of Electrolytic BWTS
    – Side Stream / Full Flow Systems
    – Active Substances
    – System Design Limitations
    – TRC (Treatment Rated Capacity)
    – Holding Time
    – Maximum Allowable Discharge Concentration (MADC) – Dose (TRO)
  • 11:00 – 11:20: Coffee Break
  • 11:20 – 12:00: Key Components of Electrolytic BWTS
    Filtration Unit
    – Filter Element/Housing Types
    – Back wash cycle
    – Ballasting in high turbidity waters
  • 12:00 – 13:00: Electrochlorination Unit
    – Production of Free chlorine and by-products
    – Electrolytic cells, Rectifiers, SW Feed water pumps
    – TRO Analyzers/Dose Adjustment
    – Ballasting Mode – Varied Salinities
  • 13:00 – 13:50: Lunch Break
  • 13:50 – 14:30: TRO Analyzers, Gas Sensors and Neutralization Unit
    Integration of BWTS and VRC (Valve Remote Control) System
  • 14:30 – 15.45: HMI (Operation Panels), Ballasting & De- ballasting Modes
    Alarm Management
    Functionality Monitoring
  • 15:45 – 16.00: Coffee Break
  • 16:00 – 17:00: Practice on the BWTS Training Simulator