垃圾焚烧底渣协同固化市政污泥的工程特性

发布时间：2018-11-19 12:16

【摘要】：开展了不同含量垃圾焚烧底渣与固化剂共同作用下,固化市政污泥工程特性研究。测定了固化体的含水率、有机质含量、重度、pH值、无侧限抗压强度、增容比及28 d渗透系数等工程指标。结果表明:固化体有机质含量及含水率随垃圾焚烧底渣含量的增多而降低;重度随底渣添加量增加而增大,在12~15 k N·m-3之间;固化体pH值、无侧限抗压强度、增容比及渗透系数均随底渣含量增加而增大。底渣添加量为40%左右时,固化体满足填埋要求。垃圾焚烧底渣作为骨料,增强了污泥固化体工程特性、减少了固化剂用量、同时实现以废治废,降低污泥和垃圾焚烧底渣处置成本。研究成果为污泥及垃圾焚烧底渣填埋处置提供了参数及指导作用。
[Abstract]:The engineering characteristics of municipal sludge solidified with different contents of MSW incineration slag and curing agent were studied. The water content, organic matter content, weight, pH value, unconfined compressive strength, compatibilization ratio and permeability coefficient of 28 days were measured. The results show that the organic matter content and moisture content of the solidified body decrease with the increase of the slag content in the MSW incineration, and the heavy content increases with the increase of the slag content in the MSW incineration, and the content of water in the solidified body increases between 1215 kNm-3; The pH value, unconfined compressive strength, compatibilization ratio and permeability coefficient of the solidified body increased with the increase of slag content. When the base slag content is about 40%, the solidified body can meet the requirement of landfill. As aggregate, the waste incineration slag enhances the engineering characteristics of sludge solidification body, reduces the amount of curing agent, and reduces the disposal cost of sludge and incineration slag. The results provide parameters and guidance for landfill disposal of sludge and MSW incineration slag.
【作者单位】：辽宁工程技术大学力学与工程学院;中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;
【基金】：国家自然科学基金资助项目(51279199) 中国科学院学科交叉与合作创新团队项目(人字(2013)47号) 中科院院地合作项目(武新管科创[2014]2号)
【分类号】：X705;X703

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