Study and Environmental Impact Evaluation on an Expanding Project of Coal Gangue Power Plant

Abstract

To asses environmental feasibility of Expanding Project of Heilongjiang Dadong Coal Gangue Power Plant (EPHDCGPP) and predict it’s influence to ambient, according to government laws, codes and regulations such as 《The Specific Guides to Environmental Impact Assessment》 and technical features of the project, the range, grade, factors and prediction models of influence evaluation were determined. Then predictions and evaluations of ambient air, surface water environment, acoustic environment, waste solids and environmental risk during construction and operating period were undertaken. The results showed that the environmental influence in construction period can meet standard. In operating period, there is no any increased influence on surface water environment, ambient air, acoustic environment and waste solids compared with present plant. The smoke dust and SO2 discharge are still 676.5 t/a and 680 t/a. Moreover, expanding project will reduce 45.8 t/a and 9.9 t/a of chemical oxygen demand (COD) and NH4+-N discharge than before. On occuring accident, discharge concentration of SO2 and smoke dust will exceeds discharge standard 1.5 times and 4.5 times respectively. Therefore, on the condition of eradicating completely accidental discharge this project is feasible from the point of view of environment.