Research progress and effect of free ammonia on the biological treatment of ammonium-containing wastewater
Wu Yongming, Wan Jinbao, Xiong Jihai, Wang Shunfa, Gu Ping
INDUSTRIAL WATER TREATMENT . 2010, (9): 1 -4 .  DOI: 10.11894/1005-829x.2010.30(9).1