Vandecasteele C, Wauters G, Arickx S, Jaspers M, Van Gerven T
Department of Chemical Engineering, Katholieke Universiteit Leuven, De Croylaan 46, 3001 Leuven, Belgium.
Waste Manag. 2007;27(10):1366-75. doi: 10.1016/j.wasman.2006.08.005. Epub 2006 Oct 16.
An integrated installation for treatment of municipal solid waste and comparable waste from industrial origin is described. It consists of three grate furnace lines with flue gas treatment by half-wet scrubbing followed by wet scrubbing, and an installation for wet treatment of bottom ash. It is demonstrated that this integrated installation combines high recovery of energy (40.8% net) with high materials recovery. The following fractions were obtained after wet treatment of the bottom ash: ferrous metals, non-ferrous metals, three granulate fractions with different particle sizes, and sludge. The ferrous and non-ferrous metal fractions can both be recycled as high quality raw materials; the two larger particle size particle fractions can be applied as secondary raw materials in building applications; the sand fraction can be used for applications on a landfill; and the sludge is landfilled. For all components of interest, emissions to air are below the limit values. The integrated grate furnace installation is characterised by zero wastewater discharge and high occupational safety. Moreover, with the considered installation, major pollutants, such as PCDD/PCDF, Hg and iodine-136 are to a large extent removed from the environment and concentrated in a small residual waste stream (flue gas cleaning residue), which can be landfilled after stabilisation.
描述了一种用于处理城市固体废物和来自工业源的类似废物的综合设施。它由三条炉排炉生产线组成，烟气处理采用半湿式洗涤，然后进行湿式洗涤，以及一个用于底灰湿式处理的设施。结果表明，这种综合设施将高能量回收率（净40.8%）与高材料回收率相结合。底灰经过湿式处理后得到以下组分：黑色金属、有色金属、三种不同粒径的颗粒组分和污泥。黑色金属和有色金属组分均可作为优质原材料回收利用；两种较大粒径的颗粒组分可作为建筑应用中的二次原材料；砂组分可用于填埋场应用；污泥则进行填埋处理。对于所有关注的组分，向空气中的排放均低于限值。该综合炉排炉设施的特点是零废水排放和高职业安全性。此外，在所考虑的设施中，多氯二苯并对二恶英/多氯二苯并呋喃、汞和碘-136等主要污染物在很大程度上从环境中去除，并集中在一小部分残余废物流（烟气净化残渣）中，该残渣在稳定化后可进行填埋处理。
