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| Mie Plant Becomes First Existing Factory to Achieve Super Green Status |
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| Major efforts in upgrading to a Super Green Factory |
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| Zero Discharge to Landfill |
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| In April 2004, the Mie Plant achieved zero discharge to landfill. It eliminated waste by recycling at every step of the manufacturing process, with measures that included introducing a system to recycle 100% of the hydrofluoric acid wastewater and using the gloves from the clean rooms as roadbed material. |
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| Photovoltaic Power System |
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| The Mie Plant No. 3 installed a 1,246-m2, 180-kW photovoltaic power system on its south exterior wall. The system began generating electricity in March 2005. Used mainly to provide lighting for all non-manufacturing rooms, the system is expected to contribute to the reduction of 50 tons of CO2 emissions a year. |
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 Mie Plant No. 3 |
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| PFC Scrubbers to Reduce Greenhouse Gas Emissions |
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| Guidelines issued by the Japanese LCD industry (JEITA: Japan Electronics and Information Technology Industries Association) aimed at reducing emissions of PFCs state that manufacturers must install scrubbers on all production lines that started running after 2001, as well as on all production lines started prior to 2001 and that will be operating in 2010. In line with this policy and under orders from Sharp top management, the Mie Plant began installing scrubbers in fiscal 2003 with the goal of completing installation on all production lines during fiscal 2004. This goal was achieved in January 2005, with scrubbers installed on all production lines, including those built before 2001. The plant can now reduce PFC gas emissions to less than 10% of what they were before scrubbers were installed. By promptly responding to LCD industry objectives, Sharp has made a significant contribution to preventing global warming. |
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Exhaust gas from manufacturing processes contains chemical substances that cause air pollution and foul odors if released into the atmosphere directly. To reduce each of these substances (acids, alkalis, isopropyl alcohol) and thus control such releases, the Mie Plant installed a scrubber.
In fiscal 2004, the plant also installed an electrolysis device on a scrubber that absorbs and eliminates acetic acid. This device causes strong oxidation that breaks down the acetic acid into water and carbon dioxide. The result is higher performance for the scrubber.
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| Fluoric Acid Effluent Recycling System Honored at 2004 WASTEC Award |
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| The Mie Plant No. 3 uses fluoric acid in its Continuous Grain Silicon production process. The plant developed this system and has been using it since last year to recover and recycle the fluoric acid effluent. This system was recognized for its excellence and won the Business Activity Category Prize at the 2004 WASTEC (Waste Control and Recycling Technology Exhibition) Awards in Japan in November 2004. Prior to the introduction of this system, the fluoric acid from the effluent was used to make cement. Now it can be used repeatedly at the production site, while the distilled water from the effluent can be used as pure water. |
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