Effect of treated wastewater on soil chemical and physical properties in an arid region
2006
Abedi-Koupai, J.(Isfahan Univ. of Technology (Iran Islamic Republic). Coll. of Agriculture) E-mail:[email protected] | Mostafazadeh-Fard, B.(Isfahan Univ. of Technology (Iran Islamic Republic). Coll. of Agriculture) | Afyuni, M.(Isfahan Univ. of Technology (Iran Islamic Republic). Coll. of Agriculture) | Bagheri, M.R.(Isfahan Univ. of Technology (Iran Islamic Republic). Coll. of Agriculture)
Two water treatments of wastewater and groundwater under sprinkler and surface irrigation systems were used in a field experiment with sugar beet, corn and sunflower. The experiment was conducted in an arid region (Borkhar, Isfahan province, central Iran). Soil samples were collected to 120 cm depth to determine concentrations of Pb, Mn, Fe, Cd, Ni, Co, Cu and Zn. Irrigation systems had no significant effect on extractable heavy metals in soil. The accumulation of Pb, Mn, Ni and Co in the soil increased significantly in the wastewater treatment in comparison with the groundwater treatment. The accumulation of Pb, Mn, Ni, Co, Cu and Zn decreased with soil depth. Treated wastewater showed no effect on the increase of Fe, Cd, Ni, Cu and Zn. The irrigation system had a significant effect on infiltration rate, bulk density and total porosity. Under sprinkler irrigation system the infiltration rate increased significantly.
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