污泥掺烧对焚烧后固体废物污染物排放的影响  

Influence of the municipal solid residue on the municipal solid waste emission

作　　者：严骁 贾燕[1] 李淑圆 陈海军 许榕发 原晓华 杨庆东 彭佳 任明忠[1] 

机构地区：[1]环境保护部华南环境科学研究所国家环境保护环境污染健康风险评价重点实验室,广州510655 [2]广东瀚蓝环保工程技术有限公司,广东佛山528225 [3]佛山市南海绿电再生能源有限公司,广东佛山528225

出　　处：《安全与环境学报》2018年第1期285-291,共7页Journal of Safety and Environment

基　　金：广东省省级科技计划项目(2014B020216006)

摘　　要：在佛山某生活垃圾焚烧发电厂开展生活垃圾掺烧市政污泥工业试验,分析5%、10%、15%的市政污泥掺烧对电厂焚烧后固体废物中重金属和二噁英排放的影响。结果表明,掺烧污泥使Cd在飞灰中的分布提高了40%以上,但其他重金属的分布特征仍主要受各自沸点的影响。焚烧固废中重金属含量受污泥的引入影响普遍不显著,飞灰中Cu浸出质量浓度上升20%,Ni、Pb、Hg、Cr的浸出质量浓度波动下降;炉渣中重金属浸出质量浓度波动较大。焚烧飞灰中总二噁英含量与污泥掺烧比例成负相关,且与投料中的Cl质量分数成正相关,与S质量分数成负相关。因此,低于15%的污泥掺烧比例不会显著提升焚烧固废中污染物排放浓度。The present article is aimed at making an investigationof the impact of the municipal solid residue on the total emission of the municipal solid waste （short for MSW）. As is known, there exist large amounts of leachable heavy metals and other toxic equivalents （TEQ） dioxins in the said waste. The present author has first of all done a commercial test in the respect of the cocombustion products as regard to the sludge and MSW in a MSW incineration power plant in Foshan city, affiliated to Guangdong administration, so as to pursue the impact of the solid sludge on the pollutant content rate of the incineration residues. In the process of our investigation and examination, we have added a certain ratio of sludge mass at about 5%, 10% and 15% to each testing group, respectively. And, then, an analysis has been done of the heavy metal concentration rates and the leaching features in addition to the TEQ dioxins in the residues left over from the aforementioned incineration examinations. Furthermore, the mass balance of the heavy metal and the dioxins in their own corresponding correlation with the dioxins and Cl, S has also been properly analyzed. This newly made analysis shows that, in the co-combustion process, over the 40% of the content of Cd in the fly ash has been increased to the original mass amount, though the distributive content concentration rates of the other heavy metal residues remain dominated b.y their own boiling points, which is much similar to those of the control group. What is more, the concentration rates of the heavy metal contents in the residue tend be reluctant to show any significant change due to the introduction of the sludge. On the other hand, the leaching toxicity of Cu in the fly ash has been found slightly increased by over 20% whereas the contents of Ni, Pb, Hg, Cr reveal a fluctuating decrease trend. Therefore, we have found that the leaching toxicity of such heavy metal contents in the slag has been fluctuating, which may probably suggest the anisotropism of the municipal s

关 键 词：环境工程学 污泥掺烧 焚烧固废 重金属 二噁英 

分 类 号：X502[环境科学与工程—环境工程]