力学与实践 ›› 2012, Vol. 34 ›› Issue (6): 32-37.DOI: 10.6052/1000-0879-12-328

• 应用研究 • 上一篇    下一篇

脱水污泥力学性能研究及其对料仓的影响分析

饶宾期1, 黄根清2, 曹黎3, 施阁1   

  1. 1. 中国计量学院机电工程学院, 杭州310018;
    2. 浙江大学建筑工程学院, 杭州310058;
    3. 浙江绿治污泥处理技术有限公司, 杭州310013
  • 收稿日期:2012-08-27 修回日期:2012-11-01 出版日期:2012-12-15 发布日期:2013-02-07
  • 通讯作者: 饶宾期, 1980 年生, 男, 硕士, 讲师. E-mail:raobinqi@cjlu.edu.cn
  • 基金资助:
    浙江省公益技术研究工业项目“污泥储存输送技术的研究”(2011C21032) 和科技部科技型中小企业创新基金资助项目“污泥低温干化成套设备”(11C26213301586) 资助.

MECHANICAL PROPERTIES OF DEWATERED SEWAGE SLUDGE AND ITS INFLUENCE ON THE STORAGE BIN

RAO Binqi1, HUANG Genqingy2, CAO Li3, SHI Ge1   

  1. 1. College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China;
    2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
    3. Zhejiang LÄuzhi Sludge Treatment Technology CO., LTD, Hangzhou 310013, China
  • Received:2012-08-27 Revised:2012-11-01 Online:2012-12-15 Published:2013-02-07

摘要: 采用土工试验, 对污泥的孔隙比、压缩系数、应力位移关系、抗剪强度与垂直压力之间的关系等进行了研究, 简要分析了污泥性能对料仓的影响. 结果表明, 污泥的含水率、孔隙比明显高于一般的淤泥质土. 结实污泥的抗剪强度、内聚力都明显高于松散污泥. 松散污泥具有高压缩性, 在垂直压力62.5~100 kPa 附近出现压缩系数的极小值, 污泥颗粒结构相对稳定, 在垂直压力大于60 kPa, 超固结现象明显, 其内摩擦角与结实污泥接近. 污泥进入料仓前应先将污泥进行破碎, 避免污泥的超固结现象发生.

关键词: 脱水污泥|力学性能|超固结|料仓

Abstract: Because of the lack of the research of the mechanical properties of the dewatered sewage sludge, this paper carried out geotechnical experiments, to study the relationship among the void ratio, the compressibility coefficient, the stress-strain relation, the shearing strength and the vertical pressure, and to analyze the inffiuence of the properties of the sludge on the storage bin. Results show that the water ratio and the void ratio of the sludge are much higher than those of the average mucky sludge. For the solid sludge, the shearing strength and the cohesion are much higher than those of the loose sludge. The loose sludge has a high compression, with a minimum compression coefficient under a vertical pressure around 62.5~100 kPa, and the particle structure of the sludge is relatively stable. When the vertical pressure exceeds 60 kPa, the sludge is apparently over- consolidated, the internal friction angle is close to that of the solid sludge. Before putting the sludge into the bunker, it should be crushed to avoid to be over-consolidated.

Key words: dewatered sewage sludge|mechanical properties|over-consolidated|storage bin

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