Green rust (GR) is an important intermediate Layered Double Hydroxide (LDH), which exists in oxidative transformation of iron (II) phase. Anionic and cationic species can replace their corresponding parts in the layered structure, and different species can also be accumulated in between the layers. GR can play an important role in wastewater remediation, such as reduction and removal of toxic compounds. An afford was carried out to synthesize LDH electrochemically, and to characterize it by Mossbauer, x-ray diffraction, scanning electron microscopy/energy dispersive x-ray analysis, x-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopic techniques. GR was used to remove nitrate and arsenic from wastewater. The optimized conditions for removal of these water pollutants were also investigated. The resistance against oxidation of GR was increased using dopents, such as magnesium and aluminum, so that it can be used for water treatment in remote areas.