Air & Transportation
Regulatory Measures against Air Pollutants Emitted from Factories and Business Sites and the Outline of Regulation - K-value Regulation for Sulfur Oxides
K-value Regulation for Sulfur Oxides
q = K × 10-3 × He2
- Where,
- q: permissible emission volume of sulfur oxides (Nm3/hr)
K: constant specified for each area (16 values ranging from 3.0 to 17.5)
He: effective stack height in meters (actual stack height plus height of smoke ascent)
Emission standards
Special emission standards
| Rank 1 | K-value 1.17 | Special wards of Tokyo, Osaka/Sakai, Yokohama/Kawasaki, Kobe/Amagasaki, Yokkaichi, Nagoya (6 areas) |
|---|---|---|
| 2 | 1.75 | Chiba/Ichihara, Fuji, Handa/Hekinan, Kishiwada/Ikeda, Himeji, Wakayama/Kainan, Kurashiki(Mizushima), Kitakyushu (8 areas) |
| 3 | 2.34 | Kashima, Kawaguchi/Soka, Toyama/Takaoka, Shimizu, Kyoto, Fukuyama, Ohtake, ube, Tokuyama, Iwakuni, Marugame/Sakaide, Niihama, Ohmuta, Ohita (14 areas) |