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Top ＞ CSR Framework ＞ Measures for Industrial Waste Reduction
In FY2004 the production quantity decreased by 3.7%, mainly due to composition change of chemical products. In other factories, production increased by 4-20%. The amount of industrial waste generated increased 11% over the previous year. The amount of waste treatment by commissioned subcontractors increased by 16%. The final landfill level was reduced by 39%.
The data includes statistics of the 9 group companies, since FY2004（FY2003 performance）.
Goal |
(1) Zero final landfill in 2010. |
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(2) By 2010, increase the recycling rate of waste disposed by commissioned subcontractors to 1.5 times (76%) the level of 1990. |
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Results |
(1) Final Landfill: 782 tons (499tons less than previous year) |
Evaluation |
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(2) Recycling Rate: 61% |
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《Change in calculation of waste generated》
Unitil FY2003 results, sludge in drainage water was calculated before dehydration. Starting with FY2004 results, sludge* quantity after dehydration is calculated as national guidelines changed. Such a change resulted in decrease of reported amount of sludge by half (Reported sludge amount was 77,899t in FY2003. When it is converted using the new reporting method, it is 34,340t). The comparison in this report is made using the converted number in this report.
1. Prevention of Industrial Waste Generation
The volume of industrial waste generated amounted to 38,043 tons, a 10.8% (3,704tons) increase over the previous year. The major increased substances were waste alkali and acid. Production quantity of Fuji factory increased 9%. Waste generation decreased by 400t, through recycling waste and utilizing byproducts as resources for other industries. Chiba factory increased production by 4%, but limited growth of waste generation by 1%.
2. Reduce Disposal of Industrial Waste
About 59% (22,468 tons) of the waste was treated in-house, and 41% (15,575 tons) was commissioned to subcontractors for industrial waste disposal. The amount of waste generated increased by 3,704 tons (11.0%) over the previous year, even though we tried to reduce waste generation for example by improving waste alkali treatment methods in the Mie factory and incinerating part of it in the Sohma factory. The amount of subcontracted waste disposal increased by 2,133 tons(16%).
3. Recycling
A total of 9,500t (61% of total 15,575t subcontracted disposal) was recycled and effectively utilized as soil conditioners, cement, roadbed materials and heating value.
The recycling index over the standard fiscal year (FY1990 recycling rate considered on a 100 index) was 120.
4. Final Landfill
The final landfill amounted to 782 tons, which was a 499 ton（39%) drop from the previous fiscal year’s 1,281 tons. The amount of final landfill decreased in all factories; for example, 264t（96%）decrease in Fuji factory, 53t(64%）decrease in Chiba factory, and 43t（65%）decrease in Kashima factory. Such decrease was achieved through increased recycling of waste and its utilization in other industrial sectors. There was no temporary waste increase due to troubles in production. The final landfill index over the standard fiscal year (FY1990 final landfill rate at a 100 index) was 21, decreased to 1/5 of previous year. We seek to achieve zero landfill in FY2010. We continue to practice waste disposal with minimum environmental burden, and/ or commission it to subcontractors who practice with minimum environmental burden.
5. Challenges towards Zero-Emission
The basic concept of Zero-Emission is to "reduce the level of final landfills commissioned to subcontractors to a level under 1%". In 2004, Kashima factory achieved zero emission, for example, by utilizing waste white clay as a fermentation accelerator. Sohma factory achieved zero emission in FY2003 and maintained zero emission in FY2004. Among six Asahi Denka factories, two factories achieved zero emission. Emission index of six Asahi Denka factories average of 5.1%, greatly improved this year, as it has been 8-9% for the past five years after falling below 10% in FY2000.
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