Wastewater was manipulatively delivered to the soil layer with definite conformation and good diffusivity and purified by subsurface infiltration system, which has such advantages as low cost and energy consumption, easy management and water reuse. The soil permeability of three soil samples was studied in this paper. The results indicated that the soil permeability with combined ration as Sawdust: Ceramsite: boiler ash:soil =1:2:4:5 is best. The purification effect of CODCr,TN,TP,NH3-N was investigated by ...
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