Environmental report


Environmental Performance - OUTPUT


Control of Chemical Substances (those targeted for PRTR)

We endeavor to reduce disposal of substances targeted for the PRTR (Pollutant Release and Transfer Register) law in each of our plant, based on the law concerning understanding the discharged amount of special chemical substances into the environment and promoting improvement of their management (PRTR law).

In 2007 we reduced the discharged and transferred amount of the PRTR 16 substances, significantly reducing the amount of antimony, lead and arsenic among others.

2007 Reported Amount of PRTR Substances

(Unit: t)


Cabinet order no. Name of Class I chemical substances Discharged amount Transferred amount
Atmosphere Water area Soil Landfill within our own land Sewage system Outside of each business establishment
1 Water-soluble compounds of zinc - 7.7 - - - 24.0
16 2-aminoethanol - - - - - 0.9
25 Antimony and its compounds 0.1 0.3 - 680.0 - -
43 Ethylene glycol - 0.0 - - - 2.7
47 Ethylenediaminetetraacetate - 0.0 - - - 14.3
60 Cadmium and its compounds 0.0 0.0 - 65.0 - -
63 Xylene 1.3 - - - - 7.7
64 Silver and its water-soluble compounds 0.0 - - 6.0 - 0.3
68 Chrome and trivalent chrome compounds - - - 34.0 - 1.5
85 R-22 - - - - - 4.1
89 Toluene 12.4 - - - - -
100 Cobalt - - - - - 4.5
121 R-12 - - - - - 4.0
175 Mercury and its compounds - 0.0 - 0.4 - -
178 Selenium and its compounds 0.0 0.1 - 12.0 - -
198 1.1.5.7- tetraazatricyclo - 0.2 - - - 214.4
207 Water-soluble copper salt - 0.4 - - - 15.0
217 R-11 - - - - - 10.6
230 Lead and its compounds 0.8 0.0 - 4,700.0 - 22.3
231 Nickel - 0.3 - - - 74.5
232 Nickel compounds - - - - - 0.0
243

Barium compounds

- - - - - 19.3
252 Arsenic and its inorganic compounds 0.1 0.0 - 810.0 - 3.3
253 Hydrazine - - - - - 1.8
283 Hydrogen fluoride and its water-soluble salt 2.6 31.8 - - - -
304 Boron and its compounds - 7.4 - - - 14.5
311 Manganese and its compounds - 7.6 - - - 754.7

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179 Dioxin 0.11 0.003 - - - 32.98

 

Our Efforts towards Reduction of Chemical Substances

ECollection of chemical substances and installation of collecting equipment to prevent them from being discharged into atmosphere and water

EUse of alternative substances for chemical substances

ESwitching to production methods/processes that discharge less chemical substances

ESetting up and management of voluntary control standards that are stricter than the legal standards

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