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Overview

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The ECS-HYCHLORTM System adopts a disinfection technology combining filtration with indirect eletrolysis. It consists of filtration, electro chlorination unit and neutralization units with some of accessories.

The filter unit is mounted directly on the main ballast pipeline to eliminate larger microorganisms and suspended solid than 50㎛ in size. The organisms and solids are filtered out by filtration unit and discharged along with ambient water, using auto back-flushing function. During de-ballasting, ballast water does not pass through the filtration unit.

The indirect electro chlorination unit operates only during ballasting to disinfect microorganisms filtered out at first by the filtration unit. Only 1% of total ballast water flows to the electro chlorination unit to be used to generate the highly concentrated TRO. This concentrated TRO is injected to the main ballast line to be mixed with the rest of ballast water and maintain maximum TRO concentraion of 5.0mg/L.

The neutralization unit neutralizes the residual TRO by using sodium thiosulfate as the neutralizing agent before discharging the treated water overboard during de-ballasting. The maximum allowable discharge concentration of TRO is 0.1mg/L.

Main Equipment - Filtration

  • AFU (Auto Filter Unit)

    Removes particles >50㎛ during ballasting. The head loss by the unit is below 0.1 bar and negligible.

Main Equipment - Electrochlorination

  • HGU (Hypochlorite Generation Unit)

    HGU is indirect electrolysis component in the form of side stream. It generates oxidants by electro chlorination and disinfects microorganisms filtered out by AFU.

  • DMU (Degas Module Unit)

    Dilutes and discharges H2 gas, which is generated during electrolysis, by an air vent valve and a blower. It is composed of safe components which are approved the explosion-proof certification.

  • SMU (Static Mixer Unit)

    Injects high concentrated TRO to the main ballast pipeline for the dilution by side stream method during ballasting and injects neutralizing agent during de-ballasting.

Supporting Equipment

  • PMU (Pump Module Unit)

    Delivers 1% of sea water to the Electrode Module through main ballast pipeline by the pump. It is composed of a pump, an auto control valve and a flow meter.

  • ANU (Auto Neutralization Unit)

    Before discharging the treated water overboard, ANU doses neutralizing agent to maintain TRO concentration with below 0.1mg/L during de-ballasting only.

  • TSU (TRO Sensor Unit)

    Measures TRO concentration during ballasting and de-ballasting. TSU is controled by HMI.

Sensors

  • FMU (Flow Meter Unit)

    Measures flow rate of ballast water during ballasting and de-ballasting.

  • CSU (Conductivity Sensor Unit)

    Measures electrical conductivity of seawater during ballasting operation.

Others

  • LCU (Local Control Unit)

    Distributes power to all components and controls communication parts of all eqiupment by HMI (Human Machine Interface). It saves operation records automatically.