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Volume 38 Issue 3
Jun.  2020
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Article Navigation >  ENVIRONMENTAL ENGINEERING  > 2020  >  38(3): 22-26
WANG Xiao-fang, GAO Jian-ming, GUO Yan-xia, CHENG Fang-qin. DIFFERENCE OF IRON REMOVAL EFFICIENCIES FROM CIRCULATING FLUIDIZED BED FLY ASH AND PULVERIZED COAL FLY ASH BY MAGNETIC SEPARATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(3): 148-153. doi: 10.13205/j.hjgc.202003025
Citation: CHEN Rui, YANG Kai, XIAO Wei, GAO De-hong, REN Fu-min. ANALYSIS ON RECYCLING TREATMENT AND DISPOSAL OF ENGINEERING SLAG[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(3): 22-26. doi: 10.13205/j.hjgc.202003004
shu

ANALYSIS ON RECYCLING TREATMENT AND DISPOSAL OF ENGINEERING SLAG

doi: 10.13205/j.hjgc.202003004

  • 1. Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;

  • 2. Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing 100044, China;

  • 3. Hunan Jinjia Environment Science and Technology Group Co., Ltd, Changsha 410000, China

  • Received Date: 2019-10-19
    Abstract
  • Large amount of engineering slag production and low comprehensive utilization rate have become important environmental issues that need to be resolved in the process of urban development in China, and resource utilization is the future trend. The paper put forward the resource treatment and disposal mode of engineering slag to provide a feasible direction for its future work. Combining the urban construction process and different shield construction technologies, the paper selected the slag generated from Changsha as the research objects. Through sampling and pollution analysis, the pollution components of the project slag were determined and the shield the basic direction of slag resource utilization was proposed. It also proposed the production process of sand and gravel, analyzed the content of each element in the shield mud cake, explored the feasibility of firing the ceramsite with dregs and the required conditions, proposed two methods of making mud cake bricks, and reusing the mud cake as planting soil. Based on the engineering slag generated from the construction of the comprehensive pipe gallery in Changsha, this paper predicted the amount of sand and gravel, and the economic value of the shield mud cake after its utilization.
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