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

Air & Transportation

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

Latest Amendment on April 10, 1998

( details )
Soot and smoke
Name of substance 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 substance Soot 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 substance Harmful 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 substance Harmful 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 substance Harmful 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 substance Harmful 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 substance Harmful 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 substance General 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 substance Designated 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  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 substance hazardous 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 substance Specific 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 substance Specific 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 substance Specific 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 substance Dioxins 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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