Effect of Thermal Regeneration on the Breakthrough Performance of Ceramsite Saturated with Methylene Blue  

作　　者：Tianpeng Li Ting Li 

机构地区：[1]College of City and Architecture Engineering,Zaozhuang University,Zaozhuang 277160,Shandong,China [2]Zaozhuang Yuanheng Machinery Manufacturing Co.,Ltd.,Zaozhuang 277000,Shandong,China

出　　处：《Journal of Harbin Institute of Technology(New Series)》2020年第5期87-96,共10页哈尔滨工业大学学报（英文版）

基　　金：the Natural Science Foundation Training Project of Shandong Province,China(Grant No.ZR2018PEE026);the Science and Technology Planning Project of Zaozhuang City,Shandong Province,China(Grant No.2018GX12);the Project of Science Research Foundation of Zaozhuang University,China(Grant No.2017ZX16);the Doctoral Scientific Research Foundation of Zaozhuang University,China(Grant No.2017BS01).

摘　　要：The regeneration of a spent packing is crucial with respect to the development of circular economy and abstemious society.Thus,the effects of regeneration temperature,resistant time,heating rate,and regeneration cycle on the breakthrough performance of methylene blue(MB)dye⁃exhausted ceramsite in a two⁃stage fixed⁃bed column were studied in this work.Results illustrate that the ceramsite exhibited excellent potential regeneration properties under the following optimal regeneration conditions:treatment temperature was 600°C,resistant time was 15 min,heating rate was 20℃/min,regeneration cycle was over 9 cycles,and the breakthrough time,saturation time,regeneration efficiency(RE),and regeneration loss rate(RLR)were 540 min,1020 min,64.61%,and 17.73%,respectively.The RE declined by 35.14%in over 1 cycle,while the RLR increased by 3.15 times in over 9 cycles.Besides,Thomas model was suitable to describe the two⁃stage fixed⁃bed column adsorption and thermal regeneration process with R2=0.978.In conclusion,a thorough understanding of the regeneration behavior of the two⁃stage fixed⁃bed column packed with ceramsite provides reference to obtain an effective and feasible regeneration approach,and it is beneficial for further application in water treatment.

关 键 词：CERAMSITE thermal regeneration two⁃stage fixed⁃bed column breakthrough performance Thomas model 

分 类 号：X7[环境科学与工程—环境工程]