表流-水平流复合人工湿地对高污染河水的净化

发布时间：2018-01-04 13:08

本文关键词：表流-水平流复合人工湿地对高污染河水的净化　出处：《环境工程学报》2015年11期 　论文类型：期刊论文

【摘要】：为了研究表流-水平流复合人工湿地对高污染河水的净化效果及植物对复合湿地中二级潜流湿地的影响作用,实验构建了表流+芦苇水平潜流和表流+无植物水平潜流复合人工湿地。在相同的水力负荷下连续运行一年的结果表明,复合人工湿地对高污染河水中TN、NH3-N、TP、COD、BOD5和SS的去除率分别为57.3%~63.1%、65.7%~68.1%、69.4%~82.7%、85.3%~86.3%、96.7%~96.9%和97.9%~98.2%,种有植物的二级潜流湿地具有更好的脱氮和除磷效果;表流湿地作为复合湿地的第一级能够有效去除大部分的有机污染物和悬浮物,进而避免二级潜流湿地的堵塞,并利于二级潜流湿地的脱氮除磷的进行;复合湿地对有机物和悬浮物的去除不受季节性波动的影响,但是其脱氮效果受季节波动的影响较大。
[Abstract]:In order to study the purification effect of surface flow and horizontal flow composite constructed wetland on high pollution river water and the effect of plant on secondary subsurface flow wetland in composite wetland. The experiment constructed the surface flow Reed horizontal subsurface flow and the surface flow without plant horizontal subsurface flow composite constructed wetland. The results of continuous operation under the same hydraulic load for one year show that the composite constructed wetland can treat TN in the highly polluted river water. The removal rates of COD D5 and SS were 57.3% and 65.7%, respectively. 85.3% and 97.9% and 97.9% respectively, the second subsurface flow wetland with plants has better nitrogen removal and phosphorus removal effect. Surface flow wetland as the first stage of the composite wetland can effectively remove most of the organic pollutants and suspended matter, thereby avoiding the blocking of the secondary subsurface flow wetland, and is conducive to the removal of nitrogen and phosphorus in the secondary subsurface flow wetland. The removal of organic matter and suspended matter by composite wetland is not affected by seasonal fluctuation, but its nitrogen removal effect is affected by seasonal fluctuation.
【作者单位】：西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室;
【基金】：国家“水体污染控制与治理”科技重大专项(2012ZX07308-001-08)
【分类号】：X522
【正文快照】： 近年来,随着我国经济的迅猛发展,诸如河流污染等环境问题也随之产生,河流污染不仅加剧了水资源危机,还严重威胁了经济和环境的可持续发展[1]。皂河是渭河的一级支流,作为西安市区的主要纳污河道,河水水质接近生活污水,该地区干旱少雨的气候特征加剧了其水质的恶化,而皂河纳污

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