ABSTRACT
Ammonia is a colorless gas that dissolves readily in water. It is commonly present in most water supplies in trace quantities as ammonium ion due to degradation of nitrogenous organic matter. Biological nitrification process can be used to treat nitrogenous wastewater even for high ammonium concentrations. Biological treatment processes are cheaper compared to chemical, physical or combined chemical-physical treatment methods [7]. Ammonia can also be removed by inorganic zeolites such as chabazite, mordenite and clinoptilolite. Some zeolites are more highly selective for ammonia and are able to remove it throughout the acceptable pH range for potable water (6 to 9) without the danger of dumping.
