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Air Emissions

Significance

Sulfur dioxide (SO2) and oxides of Nitrogen (NOx) as well as a quantity of dusts are the indicators of air quality released at stacks from thermal power plants since they may have the impacts on human health in the area.  As a result, the government sector needs to improve the air quality in large cities determining more stringent preventive measures and standards for many consecutive years. It is also a challenge for BPP to improve its pollutant treatment efficiency and control the released air quality to comply with the laws.

Management Approach

BPP has set up measures to control air quality in accordance with legal requirements in order to have the air quality in a safe level for the health of its employees and communities surrounding the project’s areas.

  • Continuously using proper technologies to improve a pollutant treatment system before releasing any contaminations from stacks, for example a SO2 precipitator called the ‘Flue Gas Desulfurization (FDG)’, a particular matter treatment system, namely the Electrostatic Precipitator, and a dust filter – the ‘Bagfilter’, etc.
  • Opting to use coal with low sulfur contents to lower the SO2 amount generated at its original point; BPP has developed a long- term purchase agreement for the quality coal resources as specified. The online trading system has also been open for coal traders to offer the coal quality meeting the requirements of BPP.
  • The clean technology has been employed to help boilers igniting completely, such as using the effective production and environmentally friendly technology called the ‘High Efficiency, Low Emissions (HELE)’, the clean technology for boiler’s combustions namely, the ‘Pulverized Fuel Combustion’ and the ‘Fluidized Bed Combustion’ to reduce SO2 and NOx as well as particular matters during the boiler’s combustion.
  • Implementing the continuous monitoring system for air quality discharges throughout the production process and defining preventive measures as well as being regularly audited from the outside agencies.

Performance

  • The air quality released at stack from all power plants comply with the regulations.
  • The emissions intensity was lower than the target.
    • SO2 intensity 0.0254 tonnes/ GWh
    • NOx intensity 0.0420 tonnes/ GWh
    • PM intensity 0.0027 tonnes/ GWh

 

 

 

 

 

 

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