Rahmani,A R , , Mesdaghinia,A R , and Mahvi,A H . "Applied of Ion Exchange and Nitrification Processes in Ammonium Removal from Polluted Water in Batch System", Journal of Water and Wastewater; Ab va Fazilab (in persian), 13, 4, 2003, 38-45. doi: 10.22093/wwj.2003.176071