Journal of Jilin University(Earth Science Edition) ›› 2025, Vol. 55 ›› Issue (5): 1671-1679.doi: 10.13278/j.cnki.jjuese.20240016

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Design and Response Surface Optimization of Fluoride Solidification/Stabilization Agent for Lake and Reservoir Dredging Sediment

Ren Hejun1，2，Shen Tianqi1，2，Zhang Fengkun3，Li Yanling3   

  1. 1. National-Local Joint Engineering Laboratory of Petrochemical Contaminated Site Control and Remediation Technology

    (Jilin University), Changchun 130021，China

    2. College of New Energy and Environment, Jilin University, Changchun 130021，China

    3.  Tianjin Key Laboratory of Dredging Engineering Technology Enterprise （CCCC Tianjin Waterway Bureau Co., Ltd.）, Tianjin

    300457, China

  • Online:2025-09-26 Published:2025-11-15
  • Supported by:
    Supported by the Project of CCCC Tianjin Waterway Bureau Co., Ltd. （THJ-KXZX(2022)048） and the  Science and Technology Development Plan of Jilin Province (20180101094JC)

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Abstract: In order to realize the fluoride solidification/stabilization of the lake and reservoir sediment, a compound of calcium hydroxide, potassium dihydrogen phosphate, iron sulfate and magnesium chloride was designed. Response surface methodology optimization experiments were conducted with the solidification/stabilization efficiency of fluorine-containing sediment as the dependent variable, and the calcium hydroxide addition, potassium dihydrogen phosphate addition, ferric sulfate and magnesium chloride addition as the independent variables. The results showed that the optimal solidification/stabilizing agent ratio was 3.572% calcium hydroxide, 4.342% potassium dihydrogen phosphate, 3.391% iron sulfate and 3.391% magnesium chloride. Using the optimal conditions simulated by the response surface method, experimental verification showed that the fluorine solidification/stabilization efficiency in the dredging sediment can reach 73.91%. The predicted value of 75.62% is in good agreement, indicating that the model is reliable and effective.

Key words: fluorine, sediment, solidification/stabilization, optimization of pharmaceutical ratio, response surface method

CLC Number: 

  • X523
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