我国"九五"期间环评火电项目SO2控制分析

从我国"九五"期间新建、改建、扩建的83个燃煤火电项目的环境影响评价报告书中取得相关数据,采取实证研究的办法,对这些项目的SO2控制情况进行分析.结果表明:这83个项目中有87%的计划装机容量使用含硫量小于1%的低硫煤;大于31%的计划装机容量采取了脱硫措施.从国家鼓励的增产不增污的效果来看,自1997年起,区域内实现增产不增污的项目比例较高,达到60%以上,2000年达到了100%.同时,火电厂内实现增产不增污的项目比例也逐年上升.可以看出"九五"期间提出的有关新建火电厂的SO2控制政策在环境影响评价这一阶段得到了很好的执行.提出在今后的SO2控制政策设计中要注意浓度控制和总量控制的政策协调性. 

Sulfur Dioxide Emissions Control Strategies of New Thermal Power Plants Submitted for EIA Approval in the 9th Five-Year Plan

This article analyzes sulfur dioxide emissions control of 83 new thermal power plant projects submitted for EIA (Environmental Impact Assessment) approval during the 9~ th Five-Year Plan period. Among them, 87% planned to use low-sulfur coal, 31% planed to adopt some de-sulphurization measures. From 1997 to 2000, each year more than 60% of the planned projects achieved the result of total emission control (TEC) that resulted in capacity expanding without increasing regional sulfur dioxide emissions. This proportion peaked at 100% in 2000. It is also shown that each year, increased proportion of projects planned to expand achieved no increase in sulfur dioxide emissions at plant level. In conclusion, during the 9~ th Five-Year Plan period, relevant control policies for sulfur dioxide emissions from thermal power plants were well implemented during the EIA process. It is also suggested that the government should consider the relationship between emission standards and total emission control policies to control sulfur dioxide emissions in China.