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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Measurement of Dioxin Emissions from a Small-Scale Waste Incinerator in the Absence of Air Pollution Controls
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Measurement of Dioxin Emissions from a Small-Scale Waste Incinerator in the Absence of Air Pollution Controls

机译：在没有空气污染控制的情况下测量小型垃圾焚化炉中二恶英的排放

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Polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/Fs) emissions from basic small-scale waste incinerators (SWI) may cause health risks in nearby people and are thus subject to stringent regulations. The aim of this study was to evaluate PCDD/F emission and reduction of a basic SWI in the absence of air pollution controls (APCs). The results indicated that the stack gas and fly ash presented average PCDD/F levels and emission factors of 3.6 ng international toxic equivalent (I-TEQ)/Nm3 and 189.31µg I-TEQ/t and 6.89 ng I-TEQ/g and 137.85µg I-TEQ/t, respectively, much higher than those from large municipal solid waste incinerators (MSWI). PCDD/Fs congener fingerprints indicated that de novo synthesis played a dominant role in the low-temperature post-combustion zone and increased the presence of high-chlorine substituted congeners. On the basis of the emission factor 327.24 µg I-TEQ/t-waste, approximately 3000 g I-TEQ dioxins might be generated in total through basic SWIs and open burning. After refitting an SWI by adding activated carbon injection with a bag filter (ACI+BG), the PCDD/F emissions decreased to mean values of 0.042 ng I-TEQ/Nm3, far below the standard of 0.1 ng I-TEQ/Nm3, and the removal efficiency reached 99.13% in terms of I-TEQ. Therefore, it is entirely feasible to considerably reduce PCDD/F emissions by refitting basic SWI, which is positive for the future development of rural solid waste (RSW (RSW) disposal by SWI.
机译：基本的小型废物焚化炉（SWI）排放的多氯代二苯并对二恶英和二苯并呋喃（PCDD / Fs）可能对附近的人造成健康风险，因此必须遵守严格的法规。这项研究的目的是评估在没有空气污染控制（APC）的情况下PCDD / F的排放和基本SWI的减少。结果表明，烟气和粉煤灰的平均PCDD / F水平和排放因子分别为3.6 ng国际毒性当量（I-TEQ）/ Nm 3 和189.31µg I-TEQ / t和6.89 ng I-TEQ / g和137.85µg I-TEQ / t远远高于大型城市固体废物焚化炉（MSWI）的I-TEQ / g。 PCDD / Fs同系物指纹表明，从头合成在低温后燃烧区起着主导作用，并增加了高氯取代同系物的存在。根据排放因子327.24 µg I-TEQ /吨废物，通过基本的SWI和露天焚烧可总共产生约3000 g I-TEQ二恶英。通过使用袋式除尘器（ACI + BG）添加活性炭注入对SWI进行改装后，PCDD / F排放降低至平均值为0.042 ng I-TEQ / Nm 3 ，远低于该标准。 0.1 ng I-TEQ / Nm 3 ，去除率达到99.13％。因此，通过改装基本的SWI来大幅减少PCDD / F排放是完全可行的，这对于SWI处置农村固体废物（RSW（RSW））的未来发展是积极的。

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