Open Access Research Paper Views (1028) Investigation of leaching process heavy metals (Fe, Zn) in the soil under sewage sludge application by using hydrus-1D Azita Behbahaninia, Maryam Farahani J. Biodiv. & Environ. Sci. 5(4), 35-41, October 2014. Keywords: heavy metals, Hydrus, Leaching, Wastewater Details