Air & Transportation

Regulatory Measures against Air Pollutants Emitted from Factories and Business Sites and the Outline of Regulation

Latest Amendment on April 10, 1998

Soot and smoke (details)

Name of substance(details) Sulfur oxides (Sox)
Main form of generation Combustion of fuel and minerals in boilers and waste incinerators
Form and outline of regulation
1) The regulatory value (quantity) is set according to the height of the exhaust outlet (He) and the value of the constant, K, designated at each area.
  • Permissible emission (Nm3/h)
    = K * 10-3 * He2
  • General emission standard: K=3.0 - 17.5
  • Special emission standard: K=1.17 - 2.34
2) Fuel use standard
  • Sulfur in fuel is set at each area.
  • Sulfur content: Under 0.5 - 1.2 %
3) Regulation of total emission
It is set at each area/factory based on the total emission reduction plan.
Name of substanceSoot and dust
Main form of generation Same as above, and the use of an electric furnace
Form and outline of regulation
Emission standard for each facility/scale
(concentration)
  • General emission standard: 0.04 - 0.7 g/Nm3
  • Special emission standard: 0.03 - 0.2 g/Nm3
Name of substanceHarmful substance /
Cadmium (Cd), Cadmium compounds
Main form of generation Combustion or chemical treatment at a copper, zinc or lead refinery.
Form and outline of regulation
Emission standard for each facility
  • 1.0 mg/Nm3
Name of substanceHarmful substance /
Chlorine (Cl2), Hydrogen chloride (HCl)
Main form of generation Combustion or chemical treatment at chemical product reaction facilities or a waste incinerator
Form and outline of regulation
Emission standard for each facility
  • Chlorine: 30 mg/Nm3
  • Hydrogen chloride: 80,700 mg/Nm3
Name of substanceHarmful substance /
Fluorine (F), Hydrogen fluoride (HF), etc.
Main form of generation Combustion or chemical treatment at an electric furnace for aluminum refinement or a fusion furnace for glass production
Form and outline of regulation
Emission standard for each facility
  • 1.0 - 20 mg/Nm3
Name of substanceHarmful substance /
Lead (Pb), Lead compounds
Main form of generation Combustion or chemical treatment at copper, zinc or lead refining facilities
Form and outline of regulation
Emission standard for each facility
  • 10 - 30 mg/Nm3
Name of substanceHarmful substance /
Nitrogen oxides (NOx)
Main form of generation Combustion, synthesis or degradation in a boiler or a waste incinerator
Form and outline of regulation
1) Emission standard for each facility/scale
  • New facilities: 60 - 400 ppm
  • Existing facilities: 130 - 600 ppm
2) Regulation of total emission
  • It is set at each area/factory based on the total emission reduction plan.

Dust

Name of substanceGeneral dust
Main form of generation Comminution/selection, mechanical treatment, accumulation at a sieve or an accumulation site
Form and outline of regulation
Standard regarding the structure, use and administration of facilities
  • Installation of a dust collector, a dust protection cover, or a hood; Water spray
Name of substanceDesignated dust (asbestos)
Main form of generation Comminution of asbestos with a cutter, mixing and other mechanical treatment Dismantling/reconstruction/repair of a building with sprayed asbestos
Form and outline of regulation
Site boundary standard at the business site
  • Concentration 10 fibers/liter
Standard regarding removal/enclosure/containment at the time of dismantling the building

Specific substances

Name of substance(details) Specific substances
(28 substances such as ammonia, carbon monoxide, methanol)
Main form of generation Accident such as disorder/damage to facilities
Form and outline of regulation
Measures in case of an accident
  • Duty of the company for restoration
    Notification to the prefectual governor

Hazardous air pollutants

Name of substancehazardous air pollutants
(Air pollutants which are liable to advercely affect human health through long-term exposure)
234 substances (groups) are suspected to be hazardous air pollutants of these, 22 substances are "substances requiring priority action to be tackled by priority."
Main form of generation
Form and outline of regulation
Responsibilities for each subject such as the accumulation of knowledge
  • Voluntary efforts of companies and people to reduce emission,
    the development of scientific knowledge by the nation, grasping the condition of pollution by self-governing bodies
Name of substanceSpecific substances / Benzene
Main form of generation Facilities for drying benzene
Form and outline of regulation
Suppression standard for each facility/scale
  • New facilities: 50 - 600 mg/Nm3
    Existing facilities: 100 - 1500 mg/Nm3
Name of substanceSpecific substances / Trichloroethylene
Main form of generation Cleaning facilities using trichloroethylene
Form and outline of regulation
Suppression standard for each facility/scale
  • New facilities: 150 - 300 mg/Nm3
    Existing facilities: 300 - 500 mg/Nm3
Name of substanceSpecific substances / Tetrachloroethylene
Main form of generation Dry cleaning facilities using tetrachloroethylene
Form and outline of regulation
Suppression standard for each facility/scale
  • New facilities: 150 - 300 mg/Nm3
    Existing facilities: 300 - 500 mg/Nm3
Name of substanceDioxins based Law concerning special Measures against Dioxins
Main form of generation Waste incinerators, Electric steel-making furnaces, Sintering facilities for steel industry, Facilities for collecting zinc, Facilities for manufacturing aluminum base alloy
Form and outline of regulation
Suppression standard for each facility/scale
  • New facilities: 0.1 - 5 ng-TEQ/Nm3
  • Existing facilities:
    2.0 - 80 ng-TEQ/Nm3 (-'02.12)
    1.0 - 10 ng-TEQ/Nm3 ('02.12-)
  • *For soot and dust and harmful substances, the prefecture can set stricter standards by ordiance than those of the nation .
  • *For the above standards, it is necessary to make modifications any time there are changes in the condition of air pollution, the effect of measures, changes in the industrial structure and the sources of air pollution, the development/spread of anti-pollution technology, etc.
  • *ppm = 10-6, ng = 10-9g
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