新型多级潮汐流人工湿地对黄金尾矿库闭库淋溶液中典型污染物的去除  

Multistage Tidal Flow Constructed Wetlands for Gold Tailings Closed Library Leaching Solution of Typical Pollutants Removal Characteristics

作　　者：马强[1] 邱陆明[2] 杨永哲[1] 马博[1] 赵雨辰[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055 [2]长春黄金研究院,吉林长春130012

出　　处：《水处理技术》2016年第11期67-72,共6页Technology of Water Treatment

基　　金：长春黄金研究院科研项目(2013229)

摘　　要：采用多级潮汐流流人工湿地(MSTF-CWs)对黄金尾矿库闭库淋溶液进行处理,选用砾石-沸石为组合填料,平均水力负荷为5.4 L/(m^2·d),运行方式为潮汐流(运行周期8 h)。实验结果表明,当进水COD和NH4^+-N、SCN-、CN_T的质量浓度平均分别为139.9 mg/L和101.3、45.47、0.83 mg/L时,对应出水平均为60.19 mg/L和21.52、8.74、0.046mg/L,平均去除率分别为43.34%和78.14%、64.2%、93.8%;与GB 8978-1996的一级标准相比,NH4^+-N、COD及CNT的达标率分别为40.1%、94.0%及100%。MSTF-CWs对NH4^+-N、COD、SCN-及CN_T的去除负荷分别为1.06、1.04、0.61、0.01 g/(m^3·d)。说明MSTF-CWs可以显著改善黄金尾矿库闭库淋溶液水质,并为尾矿库闭库淋溶液治理提供新途径。A novel multi-stage tidal flow constructed wetlands （MSTF-CWs） was employed for treatment of gold mine tailing leachate. The MSTF-CWs was operated using tidal flow strategy （8 h for each cycle） and under the average hydraulic load of 5.4 L/（m2-d） and using gravel and zeolite act as medium. The results showed that, whenthe influent COD and mass concentration of NH4＋-N, SCN CNr were 139.9 mg/L and 101.3, 45.47, 0.83 mg/L, respectively, the average effluent were 60.19 mg/L and 21.52, 8.74, 0.046 mg/L. The average removal efficiency was78.4%, 94.0%, 64.2% and 93.8%, respectively. Compared with the GB 8978 -- 1996 in the primary standards, NH4＋-N, COD and CNT compliance rate was 40.1%, 94.0% and 100%. MSTF-CWs of NH4＋-N, COD, SCN- and CNr removal load was 1.06, 1.04, 0.61, 0.01 g/（m3.d）. MSTF-CWs can significantly improve the water quality of the gold tailings leachate. This offers a new approach for the gold mine tailing leachate treatment.

关 键 词：多级潮汐流人工湿地 黄金矿山 尾矿库闭库淋溶液 硫氰酸盐 氰化物 

分 类 号：X753[环境科学与工程—环境工程]