城市生活垃圾焚烧烟气污染物减排技术分析研究
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摘要
目前威胁生态平衡和人类健康的主要因素是大量生活垃圾造成的环境污染,为了解决环境污染问题,需要对城市生活垃圾焚烧烟气污染物的减排技术进行分析。酸性气体、颗粒污染物、重金属元素和二噁英是城市生活垃圾焚烧烟气中的主要污染物。对湿法烟气净化、干法烟气净化和半干法烟气净化三种烟气净化方法进行分析,选择净化效率高的半干法净化烟气中的酸性气体。通过对比袋式除尘器和静电除尘器之间的区别,选择经济合理,技术成熟、除尘率高的布袋除尘器,净化生活垃圾焚烧烟气中的颗粒污染物。
At present,the main factor that threatens the ecological balance and human health is the environmental pollution caused by a large number of domestic wastes. In order to solve the problem of environmental pollution,it is important analyze the emission reduction technology of municipal solid waste incineration flue gas pollutants. Acid gas,particulate pollutants,heavy metal elements and dioxin are the main pollutants in the flue gas of municipal solid waste incineration. Three kinds of flue gas purification methods,including wet flue gas purification,dry flue gas purification and semi dry flue gas purification,are analyzed.By comparing the difference between bag filter and electrostatic precipitator,we choose a bag filter with reasonable economy,mature technology and high dust removal rate to purify particulate pollutants from domestic waste incineration flue gas.
At present,the main factor that threatens the ecological balance and human health is the environmental pollution caused by a large number of domestic wastes. In order to solve the problem of environmental pollution,it is important analyze the emission reduction technology of municipal solid waste incineration flue gas pollutants. Acid gas,particulate pollutants,heavy metal elements and dioxin are the main pollutants in the flue gas of municipal solid waste incineration. Three kinds of flue gas purification methods,including wet flue gas purification,dry flue gas purification and semi dry flue gas purification,are analyzed.By comparing the difference between bag filter and electrostatic precipitator,we choose a bag filter with reasonable economy,mature technology and high dust removal rate to purify particulate pollutants from domestic waste incineration flue gas.
引文
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[2]张漫雯,冯桂贤,黄蓉,等.国产活性炭喷射去除大型城市生活垃圾焚烧发电厂烟气中的二恶英[J].环境工程学报,2015,9(11):5531-5536.
[3]刘晓一,潘赟,刘强,等.生活垃圾焚烧烟气Hg浓度空间分布及健康风险评估[J].环境工程,2016,34(7):149-154.
[4]宁星星,马晓茜,胡志锋,等.城市生活垃圾焚烧炉深度空气分级数值模拟[J].环境污染与防治,2016,38(10):53-60.
[5]雷鸣,海景,程江,等.小型生活垃圾热处理炉二恶英和重金属的排放特征[J].中国环境科学,2017(10):3836-3844.
[6]肖前军,许虎.生活垃圾焚烧炉燃烧过程温度的仿人智能控制[J].智能系统学报,2015,10(6):881-885.
[7]王浩,王永生,戢伟,等.生活垃圾焚烧厂烟气处理系统提标改造[J].工业安全与环保,2015(12):87-89.
[8]李大中,唐影.垃圾焚烧发电污染物排放过程建模与优化[J].可再生能源,2015,33(1):118-123.
[9]唐贵才,刘明,袁廷香.贵州城市生活垃圾焚烧过程中重金属分布和迁移特征[J].生态环境学报,2016,25(4):686-691.