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首页> 外文期刊>Clean air >ENVIRONMENTAL EVALUATION OF SEWAGE SLUDGE CO-COMBUSTION IN A PILOT FLUIDIZED BED COMBUSTOR
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ENVIRONMENTAL EVALUATION OF SEWAGE SLUDGE CO-COMBUSTION IN A PILOT FLUIDIZED BED COMBUSTOR

机译：液化流化床燃烧器中污泥混合燃烧的环境评价

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摘要

Co-combustion of coal with sludge did not result in greater NO_x, SO_2, HCl, and CO emissions. Sludge raised heavy metals emitted, especially Cd, Pb, and Hg, mostly associated with particles greater than 1 μm. Metals were retained in bed ashes and in the cyclones and most of the Hg was adsorbed in fly ashes. The leachability of metals and organic matter decreased with combustion. Results of acid neutralization capacity showed that ashes became more resistant to acidification than the parent sludge. Globally, this study shows that combustion of sludge can reduce environmental impact compared with the traditional direct use of sludge in soils.
机译：煤与污泥的共燃烧不会导致更多的NO_x，SO_2，HCl和CO排放。污泥会释放出重金属，尤其是镉，铅和汞，主要与大于1μm的颗粒有关。金属保留在床灰和旋风分离器中，大部分汞被吸附在飞灰中。金属和有机物的浸出性随燃烧而降低。酸中和能力的结果表明，灰烬比母体污泥更耐酸化。在全球范围内，这项研究表明，与传统的直接在土壤中直接使用污泥相比，污泥的燃烧可以减少对环境的影响。

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