垂直流人工湿地去除废水中重金属性能研究
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摘要
建立以芦苇香蒲、眼子菜和金鱼藻为植被的垂直流人工湿地,考察其对畜禽养殖废水中重金属离子的去除性能.研究发现,芦苇型人工湿地对Cu、Zn、Fe离子的去除率分别为84. 9%～87. 2%、87. 4%～91. 5%、96. 3%～98. 5%,均高于香蒲型(72. 8%～78. 4%)、眼子菜型(71. 8%～78. 5%)、金鱼藻型(74. 7%～82. 1%).但对Mn离子的去除率相对较低,为71. 9%～78. 9%,低于香蒲组(81. 3%～86. 7%)和眼子菜组(83. 9%～87. 2%),略高于金鱼藻组(67. 8%～72. 5%).不同植物根系基质和植物不同部位重金属离子富集质量浓度分析显示,重金属离子的去除主要通过基质的络合、吸附、配位作用和植物的吸收、代谢、累积作用来实现.
A vertical flow constructed wetland with reed,cattail,porphyra and goldfish algae as vegetation was established to investigate the removal of heavy metal ions from livestock and poultry wastewater. The results showed that the removal rates of Cu,Zn and Fe ions in reed constructed wetlands were 84. 9% ～ 87. 2%,87. 4% ～ 91. 5% and 96. 3% ～ 98. 5% respectively,which were higher than those in cattail type( 72. 8% ～ 78. 4%),porphyra type( 71. 8% ～ 78. 5%) and goldfish algae type( 74. 7% ～ 82. 1%). But the removal rate of Mn ion was relatively low,71. 9% ～ 78. 9%,lower than that of cattail group( 81. 3% ～86. 7%) and porphyra group( 83. 9% ～ 87. 2%),slightly higher than that of goldfish algae group( 67. 8% ～ 72. 5%). The analysis of the concentration of heavy metal ions in different root matrices and different parts of plants showed that the removal of heavy metal ions was mainly achieved through the complexation,adsorption,coordination and absorption,metabolism and accumulation of the matrices.
A vertical flow constructed wetland with reed,cattail,porphyra and goldfish algae as vegetation was established to investigate the removal of heavy metal ions from livestock and poultry wastewater. The results showed that the removal rates of Cu,Zn and Fe ions in reed constructed wetlands were 84. 9% ～ 87. 2%,87. 4% ～ 91. 5% and 96. 3% ～ 98. 5% respectively,which were higher than those in cattail type( 72. 8% ～ 78. 4%),porphyra type( 71. 8% ～ 78. 5%) and goldfish algae type( 74. 7% ～ 82. 1%). But the removal rate of Mn ion was relatively low,71. 9% ～ 78. 9%,lower than that of cattail group( 81. 3% ～86. 7%) and porphyra group( 83. 9% ～ 87. 2%),slightly higher than that of goldfish algae group( 67. 8% ～ 72. 5%). The analysis of the concentration of heavy metal ions in different root matrices and different parts of plants showed that the removal of heavy metal ions was mainly achieved through the complexation,adsorption,coordination and absorption,metabolism and accumulation of the matrices.
引文
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[15]张翔凌，张晟，贺锋，等．不同填料在高负荷垂直流人工湿地系统中净化能力的研究[J]．农业环境科学学报，2007,26(5):1905-1910.
[2]李艳丽，李舒，骆强．畜禽养殖废水灌溉土壤中重金属分布特征研究[J]．现代农业科技，2016(1):225-226.
[3]李爽，耿峰，刘侨博，等．人工湿地深度处理造纸污水尾水的工程应用[J]．哈尔滨商业大学学报:自然科学版，2014,30(6):668-671.
[4]邓玉，何聪，倪福全，等．蚯蚓生态滤池-人工湿地组合装置低温下处理畜禽废水[J]．水处理技术，2018,12(7):90-94.
[5] SOLQI E,GALANGASHI M M. Assessing the health of marine and lacustrine wetland using measurement of heavy metals in fish species:Case study from two Iranian international wetland[J].Environmental Nanotechnology, Monitoring and Management,2010(12):73-78.
[6]古小冶，陈开宁，范成新．湿地挺水植物根际金属离子的分布及界面扩散通量[J]．生态环境学报，2014,33(6):1000-1006.
[7]唐欢欢，曹学章，李小青，等．5种植物对重金属的吸收与富集作用[J]．科学技术与工程，2015(15):103-106.
[8] MAYO A W,MUTAMBA J. Effect of HRT on nitrogen removal in a coupled HRP and unplanted subsurface flow gravel bed constructed wetland[J]. Physics and Chemistry of the Earth Parts A/b/c,2004,29(15-18):1253-1257.
[9] MUNQUR A S,SHUTES R B,REVIIT D M,et al. An assessment of mental removal by laboratory scale wetland[J]. Water Science and Technology,2007,35(5):125-133.
[10] HANNA O P,KATARZYNA K. Distribution of nutrients and heavy metals in a constructed wetland system[J]. Chemosphere,2009,39(2):303-312.
[11] CHANDRA R,YADAV S,YADAV S. Phytoextraction potential of heavy metals by native wetland plants growing on chlorolignin containing sludge of pulp and paper industry[J]. Ecological Engineering,2017,98(8):134-145.
[12] ALMEIDA C,SANTOS F,FERREIRA A,et al. Constructed wetlands of the removal of metals from livestock wastewaterCan the presence of veterinary antibiotics affect removals[J].Ecotoxicology and Environmental Safety,2017,137(11):1430-1438.
[13]梁继东，周启星，孙铁珩．人工湿地污水处理系统研究及性能改进分析[J]．生态学杂志，2003,22(2):49-55.
[14]潘玮，乔亚军，王福良，等．不同湿地组合与水力负荷对二级串联人工湿地净污效果的影响[J]．江苏农业科学，2013,41(9):310-314.
[15]张翔凌，张晟，贺锋，等．不同填料在高负荷垂直流人工湿地系统中净化能力的研究[J]．农业环境科学学报，2007,26(5):1905-1910.