Batch adsorption experiments were carried out to investigate effect of dissolved organic matter(DOM) of landfill leachate derived from different landfill sites(0?4~5?12y) on the sorption of Cd~ 2+ ,Pb~ 2+ in the acidic and calcareous soil.
As the results of the experiments illustrated,the environmental influence potential of landfill disposal,incineration disˉposal and synthesized disposal are3.59×10 -2 、5.87×10 -2 and1.90×10 -2 respectively.
After the process has been used, the concentrations of COD, BOD_5, SS and NH3-N are 310-420 mg/L, 30-50 mg/L, 0-102mg/L and 500-600mg/L, respectively, which reached the third discharge standard of pollution control on the landfill site for domestic waste.
The result shows that total removal rate of COD, BOD 5, NH 3-N is respectively 88.4%, 93.4%, and 76.9%, and the effluent quality reaches II-class criteria specified in Pollution Control Standard of Domestic Refuse Landfill (GB 16889-1997).
Based on the data of many years′ geotechnical prospect and the research results of foundation′s site tests and treatment,the landfill′s type,distribution,composition and geotechnical properties in the old region of Hefei City are investigated.
The following paper introduces the preparatory works of land fill compaction engineering from the angle of architectural engineering foundation quality control,discusses the selection and treatment of earth materials,compacting method,filling method and main factors influenced fill compaction in quality control of foundation land fill compaction,and discusses the quality inspection of land fill compaction,in order to ensure the security of building.