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- Our Policy and Vision
- Our Progress and Results
- Environmental Management
- Environmentally Friendly Products and Services
- Activities toward Ecosystem and Biodiversity Preservation
- Activities within Business Operations
- Environmental Communications
- Social Contributions through Environmental Activities
- Overseas Engagements of the NEC Group
- Environmental Data
Mass Balance of Business Operations
FY 2011
Mass Balance of Business Operations
Mass balance clearly indicates the direct impact of business activities of the environment. NEC uses mass balance to implement measures to reduce environmental impact.
In FY 2011, amounts were reduced for a lot of environmental impact items compared with the previous year.
In terms of input related to energy, consumption of electricity, gas, and fuels was reduced by 51%, 28%, and 66%, respectively, due to implementation of energy-saving measures and a reduction in production.
Chemical substance consumption decreased by 70%.
In terms of output, CO₂ emissions were reduced by 440,000 tons (45%) due to decrease in energy consumption.
The volume of industrial waste emissions totaled 24,000 tons, reduced by 43% over the previous fiscal year, through promotion of the sale of industrial waste materials as a resource, reduction in production, and other factors.
Also, we were able to reduce our landfill disposal by 93 tons (75%) to 31 tons, maintaining the NEC Group's overall goal of zero emissions (which is defined as a final landfill disposal rate of less than 0.5%).
INPUT
- Electricity
- Electricity purchased from power companies for consumption in plants and offices
- Gas
- City gas and liquefied petroleum gas (LPG) consumed as energy
- Fuel
- Crude oil and kerosene consumed as energy
- Water
- Tap water, industrial water, and groundwater (excluding water for reuse)
- Chemical
- Substances
- Chemical substances used in production and regulated by law (poisons, toxic substances, hazardous substances, organic solvents, specified chemical substances, and materials listed in Pollution Release and Transfer Registers [PRTR])
- Paper
- Copying paper and computer paper used in plants and offices
- Packaging Material
- Paper and plastic packaging materials regulated by the Law for the Promotion of Sorted Collection and Recycling of Containers and Packaging
OUTPUT
- CO₂
- Carbon dioxide generated in the process of using electricity, gas, and fuels
- NOx
- Nitrogen oxide generated in the process of using gas and fuels
- SOx
- Sulfur oxide generated in the process of using fuels
- Wastewater
- Industrial wastewater from plants and offices and domestic wastewater
- BOD
- Biochemical oxygen demand - the amount of oxygen needed for pollutants (organic substances) in wastewater to be decomposed by microorganisms
- Municipal Waste
- Material
- All waste materials other than industrial waste materials generated in business operations (mainly including waste paper, used paper, cardboard, garbage, and wastewater)
- Recycling
- The use of waste materials as raw materials or resources through reuse, material recycling, or thermal recycling
- Material Recycling
- The reuse of waste materials as raw materials (e.g., the recycling of waste paper, the purchase of recycled paper, and the chemical treatment of used chemical substances to convert and reuse them as other substances)
- Thermal Recycling
- The incineration of waste materials and the use of the heat generated to produce hot water and electricity
- Industrial Waste
- Material
- Waste materials generated in the process of business operations and regulated by the Waste Disposal and Public Cleansing Law, including sludge, waste oil, waste acid, waste alkali, waste plastic, metal, glass, ceramics, and cinders Waste materials generated in the process of business operations.
- Reuse
- The reuse of waste materials without treatment (e.g., reusing packaging materials and chemical waste materials of high purity for other purposes)
- Landfill Disposal
- The direct disposal of waste materials in a landfill without intermediate treatment such as reducing the weight or volume
