ZHENG Xi-lai, WANG Dong-sheng, HU Zhi-feng, ZHANG Xiao-hui, LIN Guo-qing. WATER SENSITIVITY OF POROUS MEDIA AT SEAWATER-FRESHWATER INTERFACE[J]. Marine Geology & Quaternary Geology, 2007, 27(5): 133-137.
Citation: ZHENG Xi-lai, WANG Dong-sheng, HU Zhi-feng, ZHANG Xiao-hui, LIN Guo-qing. WATER SENSITIVITY OF POROUS MEDIA AT SEAWATER-FRESHWATER INTERFACE[J]. Marine Geology & Quaternary Geology, 2007, 27(5): 133-137.
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WATER SENSITIVITY OF POROUS MEDIA AT SEAWATER-FRESHWATER INTERFACE

  • Institute of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China

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  • Received Date: April 12, 2007
  • Revised Date: June 14, 2007
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  • According to hydrogeologic investigation in the fields and a developed experimental setup, seawater and freshwater were made to flow through a plexiglass column filled with samples from the downstream of the Dagu River. Water sensitivity at saline water-freshwater interface was studied by changing salinity sharply and gradually. The results showed that the permeability of porous media decreased by 64% when seawater was flushed by freshwater. However, the decrease of permeability was comparatively slow and the permeability decreased by 50% in the case of gradual salinity decrease. The faster the rate of salinity decreased, the larger the reduction degree of the permeability was. A significant decrease of hydraulic conductivity was observed with time and the decrease was irreversible. Due to rapid salinity reduction of the influent, the migration and interception of the released clay particles such as illite, kaolinite and chlorite resulted in the permeability change.
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    • References (8)
  • [1]
    Ochi J, Vernoux J F. Permeability decrease in sandstone reservoirs by fluid injection hydrodynamic and chemical effects[J].Journal of Hydrology,1998,208:237-248.
    [2]
    Shainberg I, Rhoades J D, Prather R J. Effect of low electrolyte concentration on clay dispersion and hydraulic conductivity of a sodic soil[J].Soil Science Society of America Journal,1981, 45:273-277.
    [3]
    Sen T K, Khilar K C.Review on subsurface colloids and colloid-associated contaminant transport in saturated porous media[C]//Advances in Colloids and Interface Science,2005:1-95.
    [4]
    Goldenberg L C, Magaritz M. Experimental investigation on irreversible changes of hydraulic conductivity on the seawater-freshwater interface in coastal aquifer[J]. Water Resources Research,1983,19(1):77-85.
    [5]
    Goldenberg L C, Magaritz M, Amiel A J, et al. Changes in hydraulic conductivity of laboratory sand-clay mixtures caused by a seawater-freshwater interface[J]. Journal of Hydrology, 1984, 70:329-336.
    [6]
    Goldenberg L C. Decrease of hydraulic conductivity in sand at the interface between seawater and dilute clay suspendions[J].Journal of Hydrology,1985,78,183-199.
    [7]
    Mohan K K, Vaidya R N, Reed M G, et al. Water sensitivity of sandstones containing swelling and non-swelling clays[J].Colloid Surface,1993,73:237-254.
    [8]
    Khilar K C, Fogler H S, Ahluwalia J S. Sandstone water sensitivity:existence of a critical rate of salinity decrease for particle capture[J].Chemical Engineering Science,1983,38(5):789-800.
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