Measures on air ambient

BLCP Power Station was designed by using the proven technology to reduce technical risks and to ensure environmental compliance. Major equipments were installed as follows:

• Installation of burner for reducing oxide of nitrogen (Low NOx burner)
• Installation of Electrostatic Precipitator; ESP
• Installation of Flue Gas Desulphurization; FGD and
• Construction of 200 meters high chimney

For air quality monitoring and checking, BLCP Power Station has also installed an automatic air measuring instrument at the top of the chimney, and set up four Air Quality Monitoring Stations (AQMS) within the specified vicinity of the power station.

Measures on water quality

WATER SUPPLY IN THE STATION CAN BE CATEGORIZED INTO 2 TYPES AS FOLLOWS:

• Fresh water
  It is designed for the usage of electricity generating process, the coal transportation at the coal unloading facilities, the maintenance activities at the coal stockyards, and general usage at offices for employees. The water is also needed at the waste water treatment plant including recycled again for the usage at the coal stockyard.


• Sea water
  The water will be pumped into the power plant at the cooling water intakes, and discharged back to the sea again at the outfalls after being properly treated of its chemical compositions, its temperature and its PH value for the purposes of environmental compliance.

BLCP Power Station also has equipments for protecting sea animals by installing 2-layer sieve in order to protect the sea animals from intruding into the cooling system.

In addition, the speed of sea water used in the cooling system is also controlled in order to enable the sea animals surviving in cooling water delivery canal. The system is checked and the annual maintenance of the equipment is executed, including the water quality and temperature around the power plant are regularly measured and checked.

Ash

Both fly and bottom ashes, arising from coal burning, can be commercially sold to the cement industry. At present, numerous studies showed that a variety of application can be made for additional value creation including ready-mix concrete, and simple reduction cost of this raw material. It is known that fly ash have been used for mixture with cement for construction of Khlong Tha Dan Dam in Nakhon Nayok Province.

Emission

BLCP Power Station controls the percentage of sulfur content on per shipment basis within the range of 0.27-0.70%, and the average limit of 0.45% on per year basis. Based upon the plant design and the technical calculation, it is estimated that the Station can outperform all key parameters or limits as stipulated by the EIAs as follows.

• Dust at 43 mg/m3 against the regulatory limit of 120 mg/m3. Simply put, it is 64% better than the standard.
• Oxide of Sulfur (SO2) at 262 ppm. against the regulatory limit of 320 ppm. It is 18% better than the standard. (However, the annual average is at 124 ppm., or 61% better than the standard).
• Oxide of Nitrogen (NOx) at 241 ppm against the regulatory limit of 350 ppm. It is 31% better than the standard.

Coal Unloading Facility

As a precautious measure, the Station will engage an independent party to perform and check the quality of every shipment of imported bituminous coal. The objective is to ensure full compliance, particularly to sulfur content limit, at the early stage of electricity generation process. During the unloading, water spray equipments are also installed at the unloader hopper in order to prevent dust dispersal.

All coal will be carefully unloaded and transported to the direction of the plant or the coal stockyard, by belt conveyer with wind protection sheet in order to prevent diffusion, spreading of dust, and falling of objects.

Water from spraying will be pumped back for treatment first before being recycling for future usage in order to save operating cost. As a result, water will be wisely used and conserved without need for drainage into the sea. The Station is also required to monitor and to check the quality of sea water around the unloading port on regular basis.

Coal Stockyard

BLCP Power Station is also required to keep and maintain coal stockyards at the appropriate volume to ensure continuity of electricity generation without interruption caused by shortage during normal and abnormal time.

The coal stockyard is designed to consist of three piles; the first two piles will be actively used for generating electricity and the last pile to be pressed and covered by grasses, for the purpose of back up during the fuel shortage or emergency.

Water spray system is also installed with technical flexibility for constant adjustment to match with the wind speed. The 6 m. high wind protection wall is also constructed along the length of the stockyard in order to avoid dust dispersal or heat combustion.

The area beneath is also laid down with high quality penetration resistant material in order to protect water flowing into the underground. The water, which comes from spraying the coal yard, will be channeled back to the clarifier tank before reusing in the next spray.

BLCP Power Station is also required to monitor and to check the quality of dust around the coal stockyard on regular basis at three different locations around the stockyard, and another monitoring station at Ta Kuan Community, Aao Pradu.