间种式植物人工湿地对校园生活污水净化的效果研究
2014-10-21段梦瑶段誉梅赵磊李兴南朱芳雨张雨豪李佳伟龚丹丹王芮李莉
段梦瑶 段誉梅 赵磊 李兴南 朱芳雨 张雨豪 李佳伟 龚丹丹 王芮 李莉
摘要 [目的] 研究人工湿地景观设计效果及不同人工湿地植物对生活污水的处理效果。[方法] 选择美人蕉+菖蒲+野菱+轮叶黑藻构成人工湿地植物组合,测定该组合对试验水样NH3-N、CODCr、TP的去除率。[结果] 组合植物对NH3-N的削弱作用最为显著,其次是CODCr、TP。水力停留时间3 d对NH3-N、CODCr、TP的去除率分别为:50.25%~99.40%、37.10%~72.83%、-28.48%~91.81%;最高去除率分別为99.40%、72.83%、91.81%。第一周期到第四周期NH3-N、CODCr、TP的去除效率曲线表明:曲线的斜率呈现出增加趋势。[结论] 该研究可为复合人工湿地植物群落对生活污水的去除效果提供重要的运行参数和技术支持。
关键词 人工湿地;菖蒲;野菱;生活污水
中图分类号 S181.3 文献标识码
A 文章编号 0517-6611(2014)33-11836-03
Research on Removal Efficiency of Interplanting Constructed Wetland Plants on Domestic Sewage from Campus
DUAN Meng-yao, DUAN Yu-mei, ZHAO Lei* et al (Department of Agricultural Science, Xichang College, Xichang, Sichuan 615000)
Abstract [Objective] The research aimed to study the effects of landscape design and the treatment effects of different constructed wetland plants on domestic sewage.[Method] Taken constructed wetland plants combination of Canna indica+ Acorus calamus Linn+ Trapa incise +Hydrilla verticillata as materials, and its removal efficiencies on NH3-N, CODCr and TP were determined.[Result] The results showed that constructed wetland plants combination had the best removal efficiency on NH3-N, followed with CODCr and TP. During 3 d hydraulic retention time, the removal efficiency on NH3-N, CODCr and TP was 50.25%-99.40%, 37.10%-72.83% and -28.48%-91.81%, with highest rates of 99.40%, 72.83% and 91.81%, respectively. The slope of removal efficiency curves of NH3-N, CODCr and TP from first cycle to fourth cycle demonstrated increasing trends.[Conclusion] This study could provide important operation parameters and technological supports for the removal effects of domestic sewage using plants community from combined constructed wetland.
Key words Constructed wetland; Acorus calamus Linn; Trapa incise; Domestic sewage
基金项目 国家级大学生创新创业训练计划项目(201210628002)。
作者简介 段梦瑶(1994- ),女,四川眉山人,本科生,专业:烟草。*通讯作者,本科生,专业:资源环境与城乡规划管理。
收稿日期 2014-10-20
人工湿地污水处理系统始于20世纪70年代的德国,它是一项生态学原理加上工程方法而形成的生态工程水处理技术。人工湿地通过湿地基质、植物与微生物的相互作用达到净化水质、美化环境的功能,已在国内外得到广泛应用[1-2]。它具有投资费用低,出水水质好,抗冲击力强,改善和美化生态景观,操作简单,维护和运行费用低廉等优点,植物可进行收割回收资源,具有经济效益和生态效益。
湿地植物的选择是湿地系统设计的核心,湿地中的水生植物有挺水、浮叶、浮水和沉水植物,不同的植物、不同的组合具有不同去污效果。……
