Text size
Enlarge
Reduce
Color
Default
Yellow text on a blue background
Black text on a yellow background
Yellow text on a black background

Japanese

  • Enquiries
  • Site map

For the future of the Earth

Home > Outline of Japan's Industrial Pollution Abatement > Preventative Measures Against Water Pollution Jinzu River, Toyama Prefecture > 3) Countermeasures against exhaust gas

Main content starts here.

Update:April 1, 2010

3) Countermeasures against exhaust gas

4,COUNTERMEASURES AT POLLUTION-GENERATING SOURCE

Dust concentration in exhaust gas, particle size and contained cadmium concentration were repeatedly measured until scientifically pinpointing the amount of cadmium discharge in exhaust gas. Operation and maintenance control were strengthened and the collection system improved, The Major improvements were as follows.

  • (1)Countermeasures against leaks such as better sealing in volatile furnaces
  • (2)The heavy oil-burning rotary kiln used to dry waste was replaced with a high pressure dewatering press.
  • (3)Bagfilters were put into use.

As a result, the discharged volume of cadmium taken from dust collectors on the exhaust gas system was reduced from the 3.5 kg per day of 1973, to one third by 1978, at approximately 1 kg per day (Fig.4-3).

To top of this page