A Research For Common Problem Of Thermal Power Plant Built Project Environmental Impact Assessment

The development of economy lead to the failure to environment. For the health of human and the survival environment of biology, it should make the restrictive regulations to the content of pollutants made by human activity, and furthest reduce the failure to environment. The countries in the world realized the important of environment and established the institution of environmental impact. China also made this work legalization in 2003.By analysis on the thermal plant project engineering in this paper,it consider that the common problem of environmental impact assessment of thermal plant construction project are: equates to industry policy; accurately forecasting the production load and concentration of air pollutants, determining the reasonable height of chimney, proposing concreted feasible pollution control measures; accurately forecasting the production load and concentration of water pollutants, proposing concreted feasible pollution control measures, improving water using level; the comprehensive utilization measures of solid waste residue; the evaluation of clean production; the risk evaluation.Under proposed the common problem of environmental impact assessment of thermal plant construction, with the example of the environmental impact assessment of Dandong Jinshan thermal plant construction project, by systematic analysis and evaluation deeply on factor selection, pollution analysis, clean production, pollution prediction and evaluation, pollution control countermeasure, risk analysis ect in environmental impact assessment, propose the pollution governance measures with the feasibility in technically and the reasonably in economy, thus control the environmental pollution made by thermal plant construction on the acceptable level.By calculating and determined the chimney's reasonable height of Dandong Jinshan thermal power plant is 190m, export diameter is 7m, meanwhile for guarantee the environmental quality of air around, project should use the low sulfur coal, dedusting efficiency should not less than 99.7% after using the static electrostatic precipitator and limestone gypsum wet method desulfurization facilities, propose the control measure of ash handling and transport and storage yard.Proposed the comprehensive utilization measures and ways of powder ash and slay and desulfurization gypsum.Analysis the environmental problem of the electromagnetic radiation of the thermal power plant transport variable electric line and radio interference, proposed the measures of decreasing the effects of electromagnetic radiation and avoiding the interference of radio and protection of over voltage and decreasing the level of electrostatic induction field strength.By analysis on abnormal condition emission of dust removal desulfurization facilities and wastewater treatment facilities, proposed the accident preventive measures and proposed the risk protection measures to oil tank.Analysis the clean production level from production process and equipment and the index of pollutants and waste comprehensive utilization.