KGD is The Best in the West and is supplying The World
When you purchase KGD you purchase:-.
  • Patented Induction Electrostatic Precipitator Technology
  • IEP Technology Collector cannot crash
  • 20% more economic than Japanese EP's
  • Higher cleaning efficiency than all other EP's
  • Factory Standard ISO 9001
  • The only European Company with working Tunnel Fitration equipement on two continents
  • The most reliable equipement
  • The most economic equipement to purchase
  • The most economic equipement to run and service
  • The design staff with more than 16 Tunnel Filtration systems experience
  • The Electrostatic Filters have been Tested on TWO Continents

Roger Gale is giving a presentation at the 6th China Tunnel Summit in Shanghai during 29th - 30th March 2012

KGD announce NEW AE technology at the 6th China Summit which can double the time between FILTER CLEANING

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/Camfil-Farr NOx Gas cleaning is most cost effective and the most compact system available

  • 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/AE Technology

Doubles the time between filter cleaning

Limits cell 'break-off'



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 up to 35m/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