Table 1 in ENVIRONMENTAL IMPACT ASSESSMENT (EIA) OF WORLD BANK FINANCED SIDDHIRGANJ 450 MW COMBINED CYCLE POWER PLANT (CCPP) PROJECT SIDDHIRGANJ, NARAYANGAJ

Table 1 - Performance ł Characteristics of FGDs Type of Characteristics Plant FGD Capital Cost Increase Wet FGD• Flue gas is saturated with water11-14%• Limestone (CaCO3) as reagent• Removal efficiency up to 98%• Use 1-1.5% of electricity generated• Most widely used• Distance to limestone source andthe limestone reactivity to beconsidered• High water consumption• Need to treat wastewater• Gypsum as a saleable by-productor wasteSemi-Dry• Also called “Dry Scrubbing” –9-12%FGDunder controlled humidification.• Lime (CaO) as reagent• Removal efficiency up to 94%