摘要
为构建一个冬季脱氮除磷效果好的人工湿地系统,选用钢渣、沸石及耐低温常绿鸢尾,构建两组潜流人工湿地(CW1,CW2)。冬季(8~12.3℃)条件下,考察两者对于城镇生活污水的净化效果。结果表明,钢渣—沸石—鸢尾人工湿地(CW2)对生活污水中的NH+4-N、TN平均去除率为95.46%、95.68%,达到GB18918-2002一级A标。人工湿地对TP及COD平均去除率为75.71%、55.22%,达到GB18918-2002一级B标。低温条件下,CW2仍保持良好的脱氮除磷效果且能耗低,可进行推广应用。
In order to construct an artificial wetland system with good nitrogen and phosphorus removal effect in winter,steel slag,zeolite and low temperature resistant evergreen iris are selected to construct two groups of subsurface flow constructed wetlands(CW1,CW2),the purification effects of the two groups of subsurface flow constructed wetlands on urban domestic sewage in winter(8~12.3℃)were investigated.The results showed that the average removal rate of NH+4-N and TN in domestic sewage by steel slag-zeolite-iris constructed wetland(CW2)were 95.46%and 95.68%respectively,and it met the first grade A of GB18918-2002.The average removal rate of TP and COD in constructed wetland were 75.71%and 55.22%,reaching Grade B of GB18918-2002.Under the low temperature conditions,CW2 still had good nitrogen and phosphorus removal effects and low energy consumption,which can be popularized and applied.
作者
巫小云
兰书焕
罗明华
涂卫国
罗雪梅
WU Xiao-yun;LAN Shu-huan;LUO Ming-hua;TU Wei-guo;LUO Xue-mei(College of Resources&Environmental Engineering,Mianyang Normal University,Mianyang,Sichuan 621000,China;Key Laboratory of Environmental&Applied Microbiology,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China;College of Life Science&Technology,Mianyang Normal University,Mianyang,Sichuan 621000,China;Sichuan Natural Resources Research Institute,Chengdu 610041,China)
出处
《四川环境》
2019年第6期20-25,共6页
Sichuan Environment
基金
四川省中央引导地方科技发展专项(2017SZYD0002)
国家重点研发计划项目(2017YFC0505105)
四川省环境治理与生态保护重大科技专项(2018SZDZX0024)
中国科学院战略生物资源服务网络计划项目(KFJ-BRP-009)
绵阳师范学院研究生创新实践基金项目(CX201908)
关键词
钢渣
沸石
人工湿地
脱氮除磷
冬季
Steel slag
zeolite
constructed wetland
nitrogen and phosphorus removal
winter
