Removal of Explosives-residues from Mine Water by Pilot-scale Biofilm Reactors

摘要：

In mining and mineral processing,ammonium and nitrate from residues of explosives and other sources are discharged to the aquatic environment.Nitrogenous compounds in mine water can adversely affect the aquatic environment.The aim of this work was to study the biological removal of nitrate from cold inorganic mine water at the pilot-scale in an operating underground mine.Seven-months pilot testing on biological removal of nitrate from inorganic mine water was successfully performed in denitrifying fixed-bed biofilm reactors.The feed to denitrification bioreactors contained 11 mg NO3--N/L.Methanol was added as an external carbon source to the denitrifying bioreactor since the inorganic mine water contained only traces of organic compounds (＜CODcr (50 mgO2/L).Nitrate removal reached 75 g NO3--N/m3/d with removal efficiencies above 95% at temperature below 4℃.Thus,removal of explosives-residues from cold inorganic mine water was shown in pilot-scale biofilm reactors.

关键词： Ammonium Bioreactor Denitrification Explosives Mine water Nitrate

作者: G.Zaitsev J.Langwaldt

作者单位: Finnish Forest Research Institute,Rovaniemi Research Station,Finland Geological Survey of Finland,Mineral Processing,Finland

会议类型: 国际会议

会议名称: XXIV International Mineral Processing Congress(第24届国际矿物加工大会)

会议地点: 北京

会议语种:英文

页码: 3871-3877

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）