会议论文详细信息
7th International Christmas Tree Research & Extension Conference
Social Contexts and the Probabilistic Fusion and Ranking of Opinions: Towards a Social Semantics for the Semantic Web
Matthias Nickles ; Ruth Cobos
Others  :  http://CEUR-WS.org/Vol-218/paper6.pdf
PID  :  590
来源: CEUR
PDF
【 摘 要 】

Wetlands and ponds are frequently used to remove nitrate from effluents or runoffs. However, the efficiency of this approach is limited. Based on the assumption that introducing vertical mixing to water column plus carbon addition would benefit the diffusion across the sediment鈥搘ater interface, we conducted simulation experiments to identify a method for enhancing nitrate removal. The results suggested that the sediment-water interface has a great potential for nitrate removal, and the potential can be activated after several days of acclimation. Adding additional carbon plus mixing significantly increases the nitrate removal capacity, and the removal of total nitrogen (TN) and nitrate-nitrogen (NO3--N) is well fitted to a first-order reaction model. Adding Hydrilla verticillata debris as a carbon source increased nitrate removal, whereas adding Eichhornia crassipe decreased it. Adding ethanol plus mixing greatly improved the removal performance, with the removal rate of NO3--N and TN reaching 15.0-16.5 g m-2 d-1. The feasibility of this enhancement method was further confirmed with a wetland microcosm, and the NO3--N removal rate maintained at 10.0-12.0 g m-2 d-1 at a hydraulic loading rate of 0.5 m d-1.

【 预 览 】
附件列表
Files Size Format View
Social Contexts and the Probabilistic Fusion and Ranking of Opinions: Towards a Social Semantics for the Semantic Web 209KB PDF download
  文献评价指标  
  下载次数:4次 浏览次数:12次