摘要
水泥窑协同处置固废在减量化、无害化和资源化方面具有显著的优势,然而,焚烧过程中不可避免地生成二噁英,而二噁英的排放量可能受固废的种类和处置量等影响。本文系统地研究某4 000 t/d的水泥窑单独处置电镀污泥、有机溶剂、含镍废物和医疗废物时废气中二噁英的排放水平,同时计算其排放因子,并且与已有的研究进行对比分析。结果表明,水泥窑协同处置不同危险废弃物时对二噁英排放的影响较小,所有排放数据均满足国家标准;二噁英主要通过从头合成反应生成,并以高氯代为主;各排放因子与国外水泥窑协同处置的企业的排放水平相当。该技术是一种切实可行的危险废物处置方式。
Co-processing solid wastes with cement kiln has the advantages of volume reduction,pollution reduction and resource utilization. However,PCDD / Fs( polychlorinateddibenzo-p-dioxins and dibenzofurans) are inevitably formed during the incineration process. The emission level may be influenced by the type of wastes and the amount of disposal,etc. This study investigated the emission levels and factors of cement production line(4000t / d) when co-processing various hazardous wastes( including electroplating sludge,organic solvent,nickel-contained waste,and medical waste). The results were compared with previous study and showed that co-processing various hazardous wastes in different scales of cement production has little effect on the emission levels. All the emission data meet the current national standards. The PCDD / Fs are mainly formed by de novo pathway and exist in highly chlorinated PCDD / Fs. The emission factors are comparable to that of foreign cement kilns. This technology is demonstrated to be a feasible way for hazardous waste disposal.
出处
《热能动力工程》
CAS
CSCD
北大核心
2016年第12期92-96,共5页
Journal of Engineering for Thermal Energy and Power
基金
基金项目:水泥窑协同处置不同种类危险废物时产生的大气污染物研究(2015A009)
关键词
危险废物
新型干法水泥窑
共处置
烟气
二噁英
hazardous wastes
new type dry cement kiln
co-processing
flue gas
dioxins
