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Reducing Wastes
To most effectively utilize resources and contribute to the realization of a recycling society,
Mazda is working to minimize waste generation in all our activities and to recycle as much as possible.
Second stage of zero-emissions goal achieved
Mazda has been steadily advancing its plan to achieve zero emissions -
the elimination of the direct landfill wastes - for some time. The original
target was to reduce the direct landfill wastes from all domestic
production points, including development, administrative and technical
sectors, to under 5% of the fiscal 1990 level. This goal was achieved
during FY 2002, one year ahead of schedule. From FY 2003 we began
work toward our second-stage goal: reducing the direct landfill waste to
under 1% by the end of FY 2004, and we were successful in January
Byproduct and waste reduction and recycling
The key areas of improvement in the attainment of the second-stage
zero emission goal were reducing the tonnage of waste generated, and
recycling more waste. In FY 2004 we slashed the tonnage of metal
scrap generated, and promoted in-plant recycling by melting and
returning refined metal to the feed supply for new parts. We also made
progress in recycling slag and cupola dust, and reducing the tonnage of
chemical sludge generated. As a result of these efforts our recycling
efficiency did not drop under 90%, and the direct landfill waste tonnage
was 1,140 tons (a reduction of 887 tons from last year).
Byproducts and waste recycling within the manufacturing process for FY 2004
Trends in the Total landfill waste volume
(%)
100
80
60
40
20
0
Comparison to index year
100
77.0
68.2
57.6
59.6
42.8
44.9 44.1
39.3
34.0
30.7
19.0
9.8
5.2 4.3
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
(fiscal year)
Including landfill after processing.
Reducing packaging and wrapping materials
We are also taking environmental issues into consideration when designing packaging,
and procuring packaging and wrapping materials. When Mazda automobile parts are
shipped to overseas assembly plants or sales companies within Japan, they are now
packed using returnable packaging materials. Mazda is promoting '3R' activities (the
principles of Returnable, Reuse and Reduce), and have implemented reviews of
packaging materials in the light of this, with the aim of reducing use of resources. The
reductions achieved during FY 2004 are shown in the table below.
Raw materials and energy
Products
Transport pallets made
from recycled plastics
Byproducts and waste
In-plant recycling
External recycling
Scrap metal
100% 51.5%
Casting sand
Total recycling efficiency: 99.2%
48.5%
47.7%
Coal ash
Dust
0.8%
Landfilled waste
Results of reductions in packaging and wrapping materials (wood and cardboard)
Reducing emissions and general waste
(tons)
6,000
Reduce Reuse Returnable
Expanded use of semi-dry machining (see page 44) resulted in a
reduction in cutting fluid consumption, and a resulting reduction in
emissions of sludge and other waste. General office waste like paper,
empty cans and plastic containers were thoroughly sorted and recycled,
providing a further reduction in emissions.
These efforts reduced the tonnage of waste processed by direct landfill
to 1% or less of FY 1990 levels, achieving our second-stage zeroemission
target. Mazda will continue it activities to maintain zero
emission performance, and expand the program to the entire Group.
5,000
4,000
3,000
2,000
1,000
0
2,366
1,195
406
765
2001
3,266
1,648
497
1,121
3,843
1,913
629
1,292
5,109
2,243
721
2,145
2002 2003 2004
(Fiscal year)
Social & Environmental Report 2005