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Gyeongju Efficiency Report
Soorak Efficiency Report
Soorak Diary
Gyeongju Diary
Jet Fan Filter
Precipitator Test Facilities
Tunnel Filter Reference List
Jet Fan Filter Efficiency Test

KGD is The Best in the West and is supplying The World
When you purchase KGD you purchase:-.
  • The latest Electrostatic Filtration Technology
  • 20% more economic than Japanese EP's
  • Higher cleaning efficiency than all other EP's
  • Factory Standard ISO 9001
  • The only Current European Company with working Tunnel Fitration equipement
  • The most reliable equipement
  • The most economic equipement to purchase
  • The most economic equipement to run and service
  • The only European Manufacturer with tunnel filtration experience
  • The design staff with more than 16 Tunnel Filtration systems experience
  • The Electrostatic Filters are Tested on TWO Continents
ONLY MANUFACTURER Carrying out Independant In Tunnel Efficiency Testing of its Filter System

KGD Developments Lead, others follow.

2007 KGD Develop Filter with more than 80% efficiency at 10m/s

KGD staff designed first tunnel filter with Negative Ionization

Festnings Tunnel OSLO Norway 1989
  • Negative ionization
  • Highest efficiency
  • 2,100,000 cubic meters per hour

KGD staff designed first IEPÃ'® tunnel filter

Gyeongju Tunnel South Korea

  • Lowest running cost
  • Low maintainance
  • Improoved efficiency

KGD/LMS NOx Gas cleaning is most cost effective and the most compact system available

Festnings Tunnel OSLO Norway Test facility
  • No regeneration required
  • More than 50000 hours without changing active components

KGD/Downstream Services Water Treatment

Gyeongju Tunnel and Surak Tunnels Korea

  • High efficiency
  • Low maintainance
  • No Chemical discharge


KGD staff designed first tunnel filter with Saw-tooth ionizer

Festnings Tunnel OSLO Norway 1989
  • Low maintainance
  • Higher efficiency
  • 50000 hours minimum cell life

KGD staff designed First Highest Velocity Filter more than 15m/second

High speed filter for retrofitting into tunnels

  • 100% reversable
  • 30 cubic meter per sec filter installed in 30 minutes.
  • Self cleaning

  • KGD Waterless Cell cleaning system

    Industrial/Tunnel applications

    • Reusable fluids
    • Low maintainance
    • No cell drying

    • KGD Self-cleaning Filter

      Tunnel Applications where 24 hour continuous operation is neccessary

      • Continuous operation
      • Maximum velocity 10m/s
      • No cleaning required