林芳



摘 要:水杉林人工湿地具有诸多生态功能,可以应用于微污染河水净化。本文研究了水杉林人工湿地在不同水期(枯水期、平水期、丰水期)对TP、TN、NH3-N和COD的去除效果,分析了水杉林人工湿地对微污染河水的净化能力。结果表明,枯水期,水杉林人工湿地对TP、TN、NH3-N和COD的去除率分别为18.4%、1.1%、2.9%和30.1%;平水期,水杉林人工湿地对TP、TN、NH3-N和COD的去除率分别为15.4%、20.9%、6.6%和43.9%;丰水期,水杉林人工湿地对TP、TN、NH3-N和COD的去除率分别为38.3%、28.1%、7.9%和41.3%。以上数据说明,水杉林人工湿地对微污染河水具有较好的净化效果,而且不同水期的净化效果表现为:丰水期>平水期>枯水期。
关键词:水杉林;人工湿地;微污染河水
中图分类号:X52文献标识码:A文章编号:1003-5168(2021)12-0137-04
Study on Purification Effect of Artificial Wetland of
Metasequoia Glyptostroboides Forest on Micro-polluted River Water
LIN Fang
(Huangshan Ecological Environmental Protection Integrated Administrative Law Enforcement Detachment,Huangshan Anhui 245000)
Abstract: Metasequoia glyptostroboides forest artificial wetland has many ecological functions, which can be used for the purification of micro-polluted river water. This paper studies the removal effect of artificial wetland of Metasequoia glyptostroboides forest on TP, TN, NH3-N and COD in different water periods low water period, normal water period, and high water period), and analyzes the purification ability of artificial wetland of Metasequoia glyptostroboides forest to micro-polluted river water. The results show that during the low water period, the removal rates of TP, TN, NH3-N and COD are 18.4%, 1.1%, 2.9%, and 30.1% respectively in the artificial wetland of Metasequoia glyptostroboides forest; during the normal water period, the removal rates of TP, TN, NH3-N and COD are 15.4%, 20.9%, 6.6%, and 43.9% in the artificial wetland of Metasequoia glyptostroboides forest; during the high water period, the removal rates of TP, TN, NH3-N and COD are 38.3%, 28.1%, 7.9%, and 41.3% in the artificial wetland of Metasequoia glyptostroboides forest. All the above data show that the artificial wetland of Metasequoia glyptostroboides forest has a good purification effect on micro-polluted river water, and the purification effect in different high water periods is as follows: high water period> normal water period> low water peroad.
Keywords: Metasequoia glyptostroboides forest;artificial wetland;micro-polluted river water
總体来说,湿地有两种形式,即天然湿地和人工湿地[1]。人工湿地是人为建设的综合生态系统,该系统通过土壤、人工介质、植物和微生物的物理、化学和生物相互作用来处理污水。人工湿地系统具有占地面积较大、易受气候条件影响、基建投资较高等弊端[2-3]。但是,若运行管理得当,人工湿地将会带来极高的经济效益、环境效益以及社会效益[4]。本文研究了人工湿地系统的一段(水杉林人工湿地)对常见水质指标的净化效果,结果发现,微污染河水经过人工湿地处理后,出水质量能够达到《地表水环境质量标准》(GB 3838—2002)的Ⅲ类标准,因而能够确保饮用水水源地的水质[5]。
1 材料与方法
1.1 研究区概况
水西河是安徽省黄山市率水河(中心城区饮用水水源地)的一条支流,最终汇入率水河上游。湿地占地面积为17 200 m2,处理河水的流量为5 000 m3/d。水西河湿……