Iron, an essential element for nearly all organisms, participatesin most important metabolic reactions, such as the syntheses ofhemoglobin, iron-sulfur protein, and other iron-bearing proteins.The iron metal is of low cost, is easy to obtain, and emerging effec-tively degraded contaminants [19]. Additionally, the use of ZVI haslow operation and maintenance costs compared with the use ofother divalent metal ions. For example, nitrate can be convertedto ammonium ion, and ammonia can then be stripped under astrong alkaline condition; hence the total aqueous nitrogen amountcan be reduced by adding ZVI. Moreover, some major reactions,which involve nitrate reduction, ammonia production, and ammo-nia stripping, can be modeled by pseudo first-order kinetics. ZVIhas been investigated as a new medium for the treatment of con-taminated water [20]. Thus, the use of ZVI as a reactive medium forwastewater treatment is a promising technique.