Exposure to high nitrate concentration through drinking water poses a threat to human health and environment. Electrocoagulation is an alternative water treatment process that involves electro-generation of coagulant agents. In the present study, electrocoagulation (EC) was exerted for the nitrate removal in a batch reactor using aluminum and iron anodes simultaneously. The effects of the main parameters including electrical current, initial pH, NaCl dosage, initial nitrate concentration and presence of turbidity on NO3- removal were investigated. NO2- as a by-product was monitored during electrolysis and nitrate-nitrite index was calculated. The results indicated that optimum condition was found at pH of 5, 300mA electrical current, 100mg/L NaCl and electrolysis time of 40 min which under this condition, removal efficiency was 81.5%.Nitrite anion was generated during electrolysis of nitrate solution which increases nitrate-nitrite index at the first reaction time and it was eliminated after 20 min electrolysis time. Reaction kinetic of nitrate removal in absence and presence of turbidity were first-order and zero-order respectively.