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Method for Determining the Permeability and Mixing Ratios of Remodeled Soils in Wastewater Land Treatment System

ZHANG Meng-nan,WAN Jun-wei,LUO Ze-jiao,HUANG Kun,ZENG Yang(School of Environmental Studies,China University of Geosciences,Wuhan 430074,China)  
In the design of wastewater land treatment system,soil permeability is critical to the sewage treatment.This paper applies numerical simulation to describing the complex construction and boundary conditions of the wastewater land treatment system,and obtains the permeability coefficients satisfying the design requirements of the wastewater land treatment system.Meanwhile,through the permeability testing of remolded soil with different sand-clay ratios,the paper figures out the mixing ratios of remolded soils satisfying the design requirements.This study provides some basis for taking the full advantage of in-situ clay resource and also the new mentality and method for similar researches and designs.
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