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首页> 外文期刊>Environmental Science & Technology >Air Pollutant Emission Rates for Dry Anaerobic Digestion and Composting of Organic Municipal Solid Waste
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Air Pollutant Emission Rates for Dry Anaerobic Digestion and Composting of Organic Municipal Solid Waste

机译：干燥厌氧消化的空气污染物排放率和有机城市固体废物的堆肥

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摘要

Dry anaerobic digestion (AD) of organic municipal solid waste (MSW) followed by composting of the residual digestate is a waste diversion strategy that generates biogas and soil amendment products. The AD- composting process avoids methane (CH_4) emissions from landfilling, but emissions of other greenhouse gases, odorous/toxic species, and reactive compounds can affect net climate and air quality impacts. In situ measurements of key sources at two large-scale industrial facilities in California were conducted to quantify pollutant emission rates across the AD- composting process. These measurements established a strong relationship between flared biogas ammonia (NH_3) content and emitted nitrogen oxides (NO_x), indicating that fuel NO_x formation is significant and dominates over the thermal or prompt NO_x pathways when biogas NH_3 concentration exceeds ～200 ppm. Composting is the largest source of CH_4, carbon dioxide (CO_2), nitrous oxide (N_2O), and carbon monoxide (CO) emissions (～60-70%), and dominate NH_3, hydrogen sulfide (H_2S), and volatile organic compounds (VOC) emissions (＞90%). The high CH_4 contribution to CO_2-equivalent emissions demonstrates that composting can be an important CH_4 source, which could be reduced with improved aeration. Controlling greenhouse gas and toxic/odorous emissions from composting offers the greatest mitigation opportunities for reducing the climate and air quality impacts of the AD-composting process.
机译：有机城市固体废物（MSW）的干燥厌氧消化（AD）随后堆肥残留消化是一种废物导流策略，产生沼气和土壤修正产品。 Ad-堆肥过程避免了填埋场的甲烷（CH_4）排放，但其他温室气体的排放，无味/有毒物种和反应化合物可以影响净气候和空气质量的影响。在加利福尼亚州的两个大型工业设施的原位测量是在加利福尼亚州的一两种大型工业设施中，以量化污染物排放率。这些测量建立了辐射沼气氨（NH_3）含量和发射的氮氧化物（NO_X）之间的强烈关系，表明燃料NO_X形成在沼气NH_3浓度超过〜200ppm时，在热或提示NO_X途径上显着。堆肥是CH_4，二氧化碳（CO_2），氧化二氮（N_2O）和一氧化碳（CO）排放（〜60-70％）的最大来源，并支配NH_3，硫化氢（H_2S）和挥发性有机化合物（ VOC）排放量（> 90％）。对CO_2等效排放的高CH_4贡献表明，堆肥可以是重要的CH_4源，这可以通过改善的通气来减少。从堆肥控制温室气体和毒性/食心排放提供了最大的缓解机会，用于降低广告堆肥过程的气候和空气质量影响。

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  • 来源
    《Environmental Science & Technology》 |2020年第24期|16097-16107|共11页
  • 作者

    Chelsea V. Preble; Sharon S. Chen; Toshifumi Hotchi; Michael D. Sohn; Randy L. Maddalena; Marion L. Russell; Nancy J. Brown; Corinne D. Scown; Thomas W. Kirchstetter;

  • 作者单位

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States Department of Civil and Environmental Engineering University of California Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States;

    Energy Technologies Area Lawrence Berkeley National Laboratory Berkeley California 94720 United States Department of Civil and Environmental Engineering University of California Berkeley California 94720 United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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