Physicochemical properties of Guanting Reservoir sediment and its land application

Surface sediment of Guanting Reservoir was dredged up and dewatered in field,and pollutant and physicochemical characterizations were mensurated.The stabilization and agricultural land use of the sediment was also studied in the field.Results showed that the sediments have a higher clay content,bulk density(1.89(g·cm~(-3))) and lower porosity(23.8%),higher deoxidize material and available nitrogen,phosphorus concentration.Heavy metal and organochlorinated pesticides concentration was lower than the class Ⅱ of national standard for soil.Stabilized the sediment with sand soil and straw could improve the physical property and decrease the concentration of deoxidize material and available nitrogen,phosphorus.Stabilized sediment could be a suitable medium for alfalfa,tree and corn growth and used for agricultural land.