...
  • 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 >Nitrogen removal from domestic wastewater using the marshland upwelling system
【24h】

Nitrogen removal from domestic wastewater using the marshland upwelling system

机译：使用沼泽地上升流系统去除生活污水中的氮

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

Malfunctioning or nonexistent wastewater treatment systems are one of the primary causes of water quality degradation in coastal areas.The marshland upwelling system (MUS)was developed as a low-cost,low-maintenance on-site treatment alternative for coastal dwellings,in which wastewater is injected into the saline subsoil and pushed toward the surface by buoyancy forces.Four injection regimes,characterized by flow rate (L/min),duration (min),and frequency (h),were evaluated for a MUS located in Moss Point,Mississippi,from June 2001 to June 2002 to determine the system's ability to remove nitrogen from wastewaters generated from recreational facilities.Nitrogen data were collected from a cluster of monitoring wells surrounding the injection well.The injection regime of 2.8 L/min (30 min/3h)resulted in the best removal efficiency.Total kjeldahl nitrogen (TKN)and total ammonia nitrogen (TAN)were reduced from an influent average of 168 and 160 to 2.4 and 1.5mg-N/L,respectively.Vector distance-based removal coefficients were estimated to be 0.88 and 0.84 m"1 for TKN and TAN,respectively.Subsequently,3.2 and 3.1 vector meters were required to reduce TKN and TAN to 10mg-N/L.The probabilities of the system effluent to exceed 10 mg-N/L were estimated to be 3% for TKN and 0% for TAN,respectively.Bench-scale laboratory studies indicated the potential for further treatment in the upper zone of the MUS system due to increases in redox potential caused by the Juncus roemerianus'rhizo-sphere,which provided a nitrification zone.
机译：故障或不存在的废水处理系统是沿海地区水质下降的主要原因之一。沼泽地上升流系统（MUS）被开发为沿海住所的低成本，低维护的现场处理替代品，其中废水将其注入到盐碱土中，并通过浮力将其推向地面。针对位于Moss Point的MUS，评估了四种注入方式（以流量（L / min），持续时间（min）和频率（h）为特征），从2001年6月至2002年6月在密西西比州确定该系统从娱乐设施产生的废水中去除氮的能力。从注入井周围的一组监测井中收集氮数据。注入方式为2.8 L / min（30 min / 3h）的去除效果最佳。总凯氏氮（TKN）和总氨氮（TAN）分别从进水平均值168和160降至2.4和1.5mg-N / L。基于ce的TKN和TAN去除系数估计分别为0.88和0.84 m“ 1。随后，需要3.2和3.1矢量仪表才能将TKN和TAN降低至10mg-N / L。超过10 mg-N / L的TKN和TAN分别估计为3％和10％的N.L.实验室规模的实验室研究表明，由于MUS系统的氧化还原电位增加，在MUS系统上部产生了进一步治疗的潜力准绳roemerianus的根际球，提供了一个硝化区。

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