...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >Horizontal subsurface-flow constructed wetland removal efficiency using Cyperus articulatus L.
【24h】

Horizontal subsurface-flow constructed wetland removal efficiency using Cyperus articulatus L.

机译：水平地下流动使用Cyperus Articulatus L构建湿地去除效率。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Constructed Wetlands (CW) are a suite of natural wastewater treatment systems that are governed by biological, chemical and physical processes. These processes, in tandem, regulate the removal of organic and inorganic wastewater pollutants. Both aquatic microorganisms and aquatic macrophytes can transform and uptake contaminants from wastewater and achieve higher removal efficiencies. The aim of this study was to evaluate the effect of Cyperus articulatus, a Colombian native aquatic macrophyte, on removal of dissolved organic matter and nitrogenous compounds from domestic wastewater. Experiments were conducted in replicate pilot-scale Horizontal Subsurface Flow Constructed Wetlands (HSSF CWs). Four (4) wetland treatment units were installed in parallel. Two were planted with C. articulatus and the other two remained as unplanted controls. The experimental system was hydraulically connected to a 760 L septic tank, which functioned as a primary treatment module and fed experimental wetland treatment units. Each wetland unit was filled with granite gravel (8 mm average diameter and approximately 40% porosity) to a depth of 0.5 m. During a period of four-months, each treatment unit was provided with 29 Lday(-1) of clarified domestic wastewater, ensuring a Hydraulic Retention Time of three (3) days. Wastewater samples from influent and effluents were collected twice each week in order to monitor temporal/spatial changes in concentration of chemical oxygen demand (COD), ammonium nitrogen (NH4(+)-N) and nitrate nitrogen (NO3(-)-N). At the end of the experiment, plant biomass was collected and dried to constant weight to facilitate calculations and reporting of plant biomass on a dry matter basis. Although this was a preliminary study of short duration, results showed that high organic matter removal efficiency can be achieved (91% in systems planted with C. articulatus, compared with 80% in unplanted wetlands). NH4(+)-N removal was significantly improved in planted systems, averaging 85% vs. 40% for unplanted systems (p < 0.05). Total biomass production by C. articulatus was 5.0 (+/- 0.16) kg.m(-2). In conclusion, results obtained in this short duration study indicate that C. articulatus could be a promising species for treating domestic wastewater in the Colombian Caribbean region. (C) 2016 Elsevier B.V. All rights reserved.
机译：构造的湿地（CW）是一套天然废水处理系统，受生物，化学和物理过程的控制。这些过程在串联中调节除去有机和无机废水污染物。水生微生物和水生型宏观物质都可以从废水中转化和吸收污染物并实现更高的去除效率。本研究的目的是评估哥伦比亚天然水生产物肺泡的Cyperus Articulatus的作用，以去除溶解的有机质和来自国内废水的氮化合物。在重复试验尺度水平地下流动构建的湿地（HSSF CWS）中进行了实验。四（4）个湿地处理单元并行安装。用C. Articulatus种植两种，另外两个仍然是漂白的对照。实验系统液压连接到760L乳房罐，其用作初级治疗模块和供给实验湿地治疗单元。每个湿地单元用花岗岩砾石（平均直径为8mm平均直径，约40％），深度为0.5米。在四个月的时间内，每个治疗单元都提供29天的澄清的国内废水，确保液压保留时间为三（3）天。每周收集来自流入和流出物的废水样品，以监测化学需氧量（COD），氮气（NH 4（+） - N）和硝酸氮（NO 3（ - ） - n）的时间/空间变化。在实验结束时，收集植物生物质并干燥至恒定重量，以促进植物生物质的计算和报告的干物质。虽然这是对短时间内的初步研究，但结果表明，可以实现高有机物质去除效率（91％的含有C. Articulatus的系统，而浮营湿地的80％）。 NH4（+） - 植物系统中的去除显着改善，平均85％对40％的漂白系统（P <0.05）。 C. Articulatus的总生物量产量为5.0（+/- 0.16）kg.m（-2）。总之，在该短期研究中获得的结果表明，C. Articulatus可能是在哥伦比亚加勒比地区治疗家庭废水的有希望的物种。 （c）2016年Elsevier B.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号