High-quality, low-cost energy is reliably produced by Sual Power Station in full compliance with the standards of the Department of Environment and Natural Resources and World Bank. We are committed to the continual improvement of our operations to maintain environment-friendliness.
Protecting the environment forms one of the pillars of the Station’s operations. This is reflected by our integrated environmental management approach, which ensures the prevention of pollution and reduction of wastes. We strengthen this further by sustainably using resources, protecting biodiversity, and preserving surrounding ecosystems.
Our ISO 14001:2015 Certification seals this commitment as we engage not only our employees, but most importantly our relevant interested parties, in protecting the environment where our power station operates.
HEAT RATE IMPROVEMENT (HRI) PROGRAM
Serves as the main control to mitigate CO2 emissions and reduce ash generation by leveling up combustion efficiency. The HRI Program is implemented annually.
CHIMNEY
Properly and effectively disperses exiting flue gas streams into the atmosphere. This flue gas stack is 220 meters in height, or approximately 83 stories.
ELECTROSTATIC PRECIPITATOR
Traps tiny particles from the flue gas. The electrostatic charge in this filtration device effectively captures 99.5% of fine ash from the flue gas stream.
FLUE GAS CONDITIONING SYSTEM
Reduces the resistivity of the fly ash, ensuring a more effective collection by the electrostatic precipitator.
FLY ASH SYSTEM
Removes collected fly ash from the economizer, air heater and electrostatic precipitator, then transports these to the fly ash silo on a cyclical basis.
BOTTOM ASH SYSTEM
Collects and removes ash from the boiler furnace bottom and conveys these to the bottom ash silos.
FLUE GAS DESULFURIZER
Binds SO2 and SO3 in the flue gas by using cleansing sprays of calcium-containing reagent – a mixture of pulverized limestone with seawater. A cleaner stream of air exits our chimney as the captured compounds are left behind.
GYPSUM DEWATERING
Removes water from the gypsum slurry, a by-product of desulfurization, using a two-stage process. The dewatered gypsum is collected and dumped at the ash disposal area.
CONTINUOUS EMISSIONS MONITORING SYSTEM (CEMS) AND CONTINUOUS OPACITY MONITORING SYSTEM (COMS)
Records the quality of exiting flue gas 24 hours a day, 7 days a week. These systems are located at the first landing level of the chimney.
AIR MONITORING STATION (AMS)
Monitors the quality of ambient air within the vicinity of the station. Three AMS are strategically located in neighboring communities.
WATER SPRINKLING SYSTEM
Suppresses and controls dust during operations at the coal yard, conveying system and coal unloaders.
IMPERMEABLE MEMBRANE
Barricades against groundwater contamination at our coal yard and ash disposal site through the use of high-density polyethylene (HDPE) liners.
WASTEWATER TREATMENT FACILITIES
Extracts harmful substances from all wastewater generated from the Station’s operations. The resulting water is directed to the sedimentation basin.
SEWAGE TREATMENT PLANT (STP)
Rids our sewage of harmful contaminants. Treated wastewater is temporarily stored in the STP lagoon before being eventually discharged to the sea.
SEDIMENTATION BASIN
Allows settlement and collection of any remaining sediment from the treated wastewater. The water is then ready for discharge to the sea.
BUFFER ZONE
Mitigates fugitive dust from the ash disposal area through a tree-lined, five-hectare zone.
IN-HOUSE SANITARY LANDFILL
Allows proper disposal of residual wastes after strict implementation of solid waste segregation.
