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BWTS

BWTS

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Necessity of Ballast Water Treatment System

Ballast water is any substance that is used in ships to make them heavier and more stable. 10 billion tons of ballast water is moved by ships every year and more than 3,000 numbers of different species exist in the ballast water.

The harmful micro organism and bacteria moved by ballast water cause not only destruction of marine ecosystem but also serious economic damages. For this reason, IMO adopted “International Convention for the Control and Management of Ships’ Ballast Water and Sediments (BWM Convention)” in Feb. 2004.

This BWM Convention shall enter into force 12 months after the date on which not less than 30 states and the combined merchant fleets of which constitute not less than 35% of the gross tonnage of the world’s merchant fleets has ratified.

Marine microbesMicrobial size
> 50 ㎛<10/m3
>10 ㎛ & 50 ㎛<10/㎖
≤ 10 ㎛N/A
Toxic vibrio cholera(O1. 139)<1 cfu / 100 ㎖
Escherichia coil<250 cfu / 100 ㎖
Enterococci<100 cfu / 100 ㎖

The main equipment of ARA PLASMA BWTS

ARA PLASMA BWTS consists of Filter module, Plasma module and UV module.

FILTER

  • Low voltage generator produces high energy plasma shock wave under water.
  • Plasma shock wave destroys micro-organisms under 50 ㎛.
  • Hybrid system with MPUV module reduced the total size of BWTS.
  • Reprocessing when de-ballasting.

PLASMA

  • Hold on specific invented technology and occupied patents for Plasma operate shock wave in an underwater, sterilize and treat for under 50 ㎛ of marine microorganism.
  • Only 10% of total electricity consumption by low power of plasma generator, Minimize for foot print of whole system in accordance with combined follow process of middle pressure ultra violet disinfection.
  • Plasma operate altogether in Ballasting and De Ballasting mode

MPUV

  • Middle pressure UV disinfection used as the principle by radiation energy from long time ago, is excellent for disinfection regarding under 10 ㎛ of virus and bacteria contents.
  • ECO friendly technology without remaining toxicity and unnecessary by product is not created.
  • Maximization for disinfection effect by efficiency arrangement of lamp.
  • Advanced function: periodically auto cleaning for quartz sleeves which protect for lamp.
  • Monitoring system by actual time with sensor of temperature and intensity

The advantage of ARA PLASMA BWTS

Installation picture of ARA PLAMA BWTS(RETROFIT)

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