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| 1 | 生活垃圾焚烧炉湿法洗涤后烟气二噁英的排放特征显示文摘现场采样分析了4个生活垃圾焚烧炉烟气通过湿法洗涤后二噁英的排放浓度。结果表明:4个焚烧炉烟气和底灰中二噁英毒性当量浓度分别为1.15~24.88 ng I-TEQ/m^3 和25.69~231.43 ng I-TEQ/kg,烟气中二噁英排放浓度远高于国家排放标准(0.1 ng I-TEQ/m^3)(GB 18485—2014《生活垃圾焚烧污染控制标准》)。烟气同系物分析表明,湿法洗涤后4个采样点烟气中4~8氯代PCDFs分布呈现较大的差异,但是4~8氯代PCDDs 基本随氯取代数的增加而增加;底灰中4个采样点 4~8氯代PCDFs和PCDDs分布相似,除了O 8CDF外,其余同系物基本随氯取代数的增加而增加。从毒性当量浓度来看,烟气和底灰中Pe 5CDF浓度占比最大,占总浓度的35.65%~47.02%。湿法洗涤对4~8氯代PCDFs和PCDDs的效率基本随氯取代数的增加而降低,主要原因可能是高温烟气使洗涤系统内二噁英发生了解析作用。 | 雷鸣 谢冰 海景 张洁茹 程江 卢加伟 | 2019 | 环境工程2019，37，7： | 6 |
| 2 | 基于硫基循环抑制技术的危险废物焚烧炉二噁英排放的控制显示文摘依托某危险废物焚烧炉(50 t·d-1)开发了一套硫基循环抑制及飞灰低温热处置联用控制二噁英排放的中试平台,研究了该系统对硫基的循环累积能力及对烟气中二噁英合成的抑制能力。系统利用吸附剂吸附了烟气中SO2,并在低温热处置装置中将吸附剂中SO2脱附回烟气中,实现SO2循环。试验结果表明,该系统能连续稳定运行,对烟气中的SO2具有一定的富集累积能力,添加一定量外源硫基物质后系统中烟气SO2能维持在100 mg·m-3左右,对整体二噁英排放因子的去除率达80%以上。可见,该硫基循环抑制技术对废物处理过程中二噁英减排具有重要指导价值,且长期稳定运行对控制二英低排放起关键作用,但该中试系统的相关参数需进一步优化。 | 吴海龙 林晓青 严密 陈彤 陆胜勇 李晓东 严建华 | 2014 | 化工学报2014，65，11： | 4 |
| 3 | 某典型生活垃圾焚烧企业烟气中二噁英类变化特征显示文摘本文选取了1家典型的生活垃圾焚烧企业作为研究对象,分别采集了净化前和净化后的烟气,结果表明:净化后的烟气中二噁英毒性当量浓度均低于0.1 ng TEQ/Nm 3,去除效率为98.3%;净化前二噁英主要以“从头合成”为主,净化后变化成“前驱物合成”为主;无论是烟气净化前还是净化后,O 8CDD、1,2,3,4,6,7,8-H 7CDD和1,2,3,4,6,7,8-H 7CDF,占比都是最大的;通过相关性分析,1,2,3,4,7,8-H 6CDF质量浓度与I-TEQ相关性最高,可作为二噁英潜在的测定指示物。通过对比研究净化前后的烟气,初步掌握了二噁英工艺流程中变化特征,为企业焚烧控制技术和环境管理提供了数据支持。 | 王玉祥 倪刘建 苏文鹏 吴莹 杨文武 王厚俊 | 2020 | 干旱环境监测2020，34，1： | 4 |
| 4 | Emission control and phase migration of PCDD/Fs in a rotary kiln incinerator:hazardous vs medical waste incineration显示文摘This study was carried out in a full-scale(50 t/d)rotary kiln incinerator to explore the removal characteristics of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs)by different units of air pollution control devices(APCDs),and special interest was focused on the“memory effect”phenomenon of PCDD/Fs in the wet scrubber(WS),which usually caused an undesirable rise in PCDD/F emission concentrations.The general removal efficiency of PCDD/Fs by APCDs was 99.4%(from 14.11 at exhaust heat boiler(EHB)outlet to 0.09 ng I-TEQ/Nm^(3)at stack)under medical waste(MW)incineration condition,and 99.2%(from 19.91 to 0.16 ng I-TEQ/Nm^(3))under hazardous waste(HW)incineration condition.The PCDD/F concentrations in flue gas decreased along the APCDs except for WS,in which the“memory effect”was observed.In detail,WS largely increased the I-TEQ concentration of gas-phase PCDD/Fs from 0.047 to 0.188 ng I-TEQ/Nm^(3)in the flue gas,and the concentration of particulate-phase PCDD/Fs increased from 0.003 to 0.030 ng I-TEQ/Nm^(3).In addition,this study found that phase migration promoted the accumulation of PCDD/Fs in scrubbing water,and the flow entrainment phenomenon played a great role in causing the“memory effect”.The PCDD/F concentrations of fly ash collected from cyclone and fabric filter(FF)were as high as 4.23 and 6.99 ng I-TEQ/g,respectively,which had exceeded the national landfill limitation(3 ng I-TEQ/g)in China.The system balance calculations revealed that APCDs promoted the migration of PCDD/Fs from the gas-phase to the particulate-phase,which caused fly ash to be the main carrier of PCDD/Fs and led to excessive emissions.The results of this study can contribute to the optimized design of combustion conditions and system cleaning for controlling PCDD/F emissions from rotary kiln incinerators. | Ying Peng Yunfeng Ma Xiaoqing Lin Jisheng Long Xiaodong Li | 2023 | Waste Disposal and Sustainable Energy2023，5，3： | 0 |
| 5 | Predicting effect factors of dual bag filter system for PCDD/Fs removal from hazardous waste incineration flue gas显示文摘The dual bag filter(DBF)system is a new polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs)emission control technology that has more efficient(PCDD/Fs)removal performance,a higher activated carbon utilization rate and less activated carbon consumption compared with the traditional single bag filter system.Moreover,few studies have been relevant to the mechanism of the PCDD/Fs removal process in the DBF system,and the selection of operating conditions of the DBF system lacks an academic basis.This study established a PCDD/Fs removal efficiency model of activated carbon injection combined bag filter(ACI+DBF)system for hazardous waste incineration flue gas and predicted the crucial effect factors.New adsorption coefficients k_(1)=532,145 Nm^(3)/(mol s)and k_(2)=45 Nm^(3)/(mol s),and the relationship expression between the number of available adsorption positions of recycled AC(AAC′)and cycle times(n)are proposed in the model.The results verify that the model error was below 5%.In addition,the PCDD/Fs removal efficiency model predicts that in a certain range,the PCDD/Fs removal efficiency increases with increasing activated carbon injection concentration.The best cycle number of activated carbon was less than 3,and the ratio of circulating activated carbon to fresh activated carbon in second bag filter(SBF)should be controlled at 7–8. | Yanan Li Qi Liu Minghui Tang Fei Wang Shengyong Lu Makwarimba Chengetai Portia Yong Chi | 2023 | Waste Disposal and Sustainable Energy2023，5，2： | 0 |
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