Removal of organic matter, phosphorus and nitrates can be carried out by various chemical, physical and chemical methods. Nutrients present in water mainly contain phosphates and nitrites. An excessive growth of these compounds in the wastewater can make the reservoir prone to different undesired effects. The aquatic plant can grow rapidly and hinder the oxygen uptake and photosynthesis. The removal of nitrogenous compounds can be carried out by electrochemical, biological and adsorption methods. The current review summarizes research and studies on nitrate and nitrate removal from wastewater.
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