Open Access Research Paper Views (300) Download (8) Investigation of leaching process heavy metals (Fe, Zn) in the soil under sewage sludge application by using hydrus-1D Azita Behbahaninia, Maryam Farahani J. Bio. Env. Sci.5( 4), 35-41, October 2014. Key: heavy metalsHydrusLeachingWastewater Details