Volume 9 Issue 6
Nov.  2019
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Article Navigation >  Journal of Environmental Engineering Technology  > 2019  >  9(6): 643-648
XING Siqi, LÜ Hang, ZHANG Wenbiao, LIU Daoguang, WU Xu. Study on thickness change of mud cake during electrolytic dewatering process[J]. Journal of Environmental Engineering Technology, 2019, 9(6): 643-648. doi: 10.12153/j.issn.1674-991X.2019.06.180
Citation: XING Siqi, LÜ Hang, ZHANG Wenbiao, LIU Daoguang, WU Xu. Study on thickness change of mud cake during electrolytic dewatering process[J]. Journal of Environmental Engineering Technology, 2019, 9(6): 643-648. doi: 10.12153/j.issn.1674-991X.2019.06.180
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Study on thickness change of mud cake during electrolytic dewatering process

doi: 10.12153/j.issn.1674-991X.2019.06.180

  • 1. Huazhong University of Science and Technology, Wuhan 430074, China

  • 2. Shanghai Techase Environment Protection Co., Ltd., Shanghai 200092, China

More Information
  • Corresponding author: Xu WU E-mail: profxuwu@hust.edu.cn
  • Received Date: 2019-03-27
  • Publish Date: 2019-11-20
    Abstract
  • Sludge electrolytic dehydration has its unique advantages, but at the same time accompanied by high power consumption, low space-time yield and other problems. In order to reduce energy consumption, taking the change of mud cake thickness in the process of sludge electrolytic dehydration as the starting point, the rule of thickness change and the relationship between thickness change and water content were explored through the small test device. The change of water content was more intuitive and controllable by observing thickness change in sludge electrolysis process under the action of vertical electric field. The mechanism of thickness change was briefly analyzed from the density and moisture content. The experiment proved that the thickness of mud cake changed regularly during the process of electrolysis. When the amount of mud input was less, the thickness of mud cake decreased with the decrease of water content, while when the amount of mud input was larger, the thickness of mud cake increased firstly and then decreased with the decrease of water content.

     

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    • References(16)
  • [1]
    CAO B, ZHANG W, WANG Q , et al. Wastewater sludge dewaterability enhancement using hydroxyl aluminum conditioning:role of aluminum speciation[J]. Water Research, 2016,105:615-624.
    [2]
    LI Y, YUAN X, WU Z , et al. Enhancing the sludge dewaterability by electrolysis/electrocoagulation combined with zero-valent iron activated persulfate process[J]. Chemical Engineering Journal, 2016,303:636-645.
    [3]
    AKRAMA M, JÉRÉMY O,JEAN V,et al. Electro-dewatering of wastewater sludge:influence of the operating conditions and their interactions effects[J]. Water Research, 2011,45(9):2795-2810.
    [4]
    NAVAB-DANESHMAND T, BETON R, HILL R J , et al. Impact of Joule heating and pH on biosolids electro-dewatering[J]. Environmental Science and Technology, 2015,49(9):5417-5424.
    [5]
    IWATA M, TANAKA T, JAMI M S . Application of electroosmosis for sludge dewatering:a review[J]. Drying Technology, 2013,31(2):170-184.
    [6]
    CAO B, ZHANG W, DU Y , et al. Compartmentalization of extracellular polymeric substances(EPS) solubilization and cake microstructure in relation to wastewater sludge dewatering behavior assisted by horizontal electric field:effect of operating conditions[J]. Water Research, 2018,130:363-375.
    [7]
    LÜ H, LIU D G, ZHANG Y L , et al. Effects of temperature variation on wastewater sludge electro-dewatering[J]. Journal of Cleaner Production, 2019,214:873-880.
    [8]
    SAVEYN H, PAUWELS G, TIMMERMAN R , et al. Effect of polyelectrolyte conditioning on the enhanced dewatering of activated sludge by application of an electric field during the expression phase[J]. Water Research, 2005,39(13):3012-3020.
    [9]
    马德刚, 张书廷, 季民 , 等. 污泥电渗透脱水操作条件的优化研究[J]. 中国给水排水, 2005,21(5):36-38.

    MA D G, ZHANG S T, JI M , et al. Optimization of operating condition for sewage sludge dewatering by electro-osmosis technology[J]. China Water & Wastewater, 2005,21(5):36-38.
    [10]
    LÜ H, WANG F, LIU D , et al. Effects of piecewise electric field operation on sludge dewatering:phenomena and mathematical model[J]. Industrial and Engineering Chemistry Research, 2018,57(37):12468-12477.
    [11]
    MAHMOUD A, OLIVIER J, VAXELAIRE J , et al. Electrical field:a historical review of its application and contributions in wastewater sludge dewatering[J]. Water Research, 2010,44(8):2381-2407.
    [12]
    TUAN P A, MIKA S, PIRJO I . Sewage sludge electro-dewatering treatment:a review[J]. Drying Technology, 2012,30(7):691-706.
    [13]
    TANAKA T, FUJIHARA K, JAMI M S , et al. Constant-current electroosmotic dewatering of superabsorbent hydrogel[J]. Colloids and Surfaces A:Physicochemical and Engineering Aspects, 2014,440:116-121.
    [14]
    ZHANG Y, CAO M, LÜ H , et al. Electrodeposited nanometer-size IrO2/Ti electrodes with 0.3 mg IrO2 cm -2 for sludge dewatering electrolysers [J]. Electrochimica Acta, 2018,265:507-513.
    [15]
    NEYENS E, BAEYENS J . A review of thermal sludge pre-treatment processes to improve dewaterability[J]. Journal of Hazardous Materials, 2003,98(1/2/3):51-67.
    [16]
    LIAO B Q, ALLEN D G, DROPPO I G , et al. Surface properties of sludge and their role in bioflocculation and settleability[J]. Water Research, 2001,35(2):339-350.
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