首页> 外文会议>The 22nd International Conference on Solid Waste Technology and Management(ICSW 2007) >Solid waste sorting and utilization at Stora Enso Oyj Veitsiluoto Mills in Kemi, Northern Finland
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Solid waste sorting and utilization at Stora Enso Oyj Veitsiluoto Mills in Kemi, Northern Finland

机译:芬兰北部凯米市的Stora Enso Oyj Veitsiluoto工厂的固体废物分类和利用

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The degree of solid waste recovery in Finnish forest industry has been increasing strongly during the last decade. The paper reports on recovery and utilization of solid wastes at Stora Enso Oyj Veitsiluoto Mills. Recovery of wastes is facilitated by source separation of different waste fractions. Veitsiluoto Mills satisfies 71 % of its total energy requirement by incinerating black liquor, wood waste, bark, biosludge and fibre sludge. All bottom and fly ash originating from the fluidized bed combustion boiler are utilized as hardener in filling mine cavities or in landscaping. Green liquor dregs are utilized as neutralizing agent for acidic waste waters. All the fibre clay from the chemical wastewater treatment plant is utilized as a hydraulic barrier material for landfills and for landscaping. In addition, all the calcium carbonate waste from the Precipitated Calcium Carbonate plant is utilized as soil ameliorating agent. Furthermore, the scrap metals, waste paper and board are recycled by external firms. Due to the effective utilization of solid wastes generated at the Veitsiluoto Mills, the annual amount of waste to be disposed of in landfills has decreased from 42 990 tonnes in 1994 to 5 134 tonnes in 2005 expressed as wet weight.
机译:在过去的十年中,芬兰林业的固体废物回收率一直在强劲增长。该论文报道了斯道拉恩索公司维伊西洛托工厂的固体废物的回收和利用。不同废物部分的源头分离有助于废物的回收。 Veitsiluoto Mills通过焚烧黑液,木材废料,树皮,生物污泥和纤维污泥满足其总能源需求的71%。来自流化床燃烧锅炉的所有底灰和粉煤灰均用作填充矿井或美化环境的硬化剂。绿液渣被用作酸性废水的中和剂。来自化学废水处理厂的所有纤维粘土均被用作填埋场和美化环境的水力阻隔材料。另外,来自沉淀碳酸钙工厂的所有碳酸钙废物都用作土壤改良剂。此外,废金属,废纸和纸板由外部公司回收。由于有效利用了Veitsiluoto纸厂产生的固体废物,每年处理在垃圾填埋场中的废物量从1994年的42990吨减少到2005年的5134吨(以湿重表示)。

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