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随着经济建设和电力工业的发展,近几年来,我国粉煤灰排放量每年以400万吨幅度增长。1988年全国粉煤灰的年排放量达5500多万吨,利用量为1420万吨,利用率为25.6％。大部分粉煤灰没有得到应用,不得不堆存占用大片土地或排入江河湖海,严重污染环境。据有关部门统计,目前全国堆存的粉煤灰累计已达5亿多吨,压占土地18万亩,若不抓紧粉煤灰的综合利用,势必占用更多土地,影响农业生产,污染大气、水源和环境。这对拥有11亿人口,可耕地仅15亿亩的我国来说,
With the development of the economic construction and the power industry, in recent years, China’s fly ash emissions have increased by 4 million tons each year. In 1988, the annual emissions of fly ash in the country reached more than 55 million tons, the utilization was 14.2 million tons, and the utilization rate was 25.6%. Most of the fly ash has not been used, and it has to be stored in large areas or discharged into rivers, lakes and seas, which seriously pollutes the environment. According to statistics from relevant authorities, the total amount of fly ash that has been piled up in the country has reached more than 500 million tons, which accounts for 180,000 acres of land. If we do not take full advantage of the comprehensive utilization of fly ash, it will occupy more land, affect agricultural production, and pollute the atmosphere. , water and environment. This is for our country, which has 1.1 billion people and only 1,500 million mu of arable land.