Nitrogen removal influence factors in A/O process and decision trees for nitrification/denitrification system
  • 【DOI】

    10.3321/j.issn:1001-0742.2004.06.006

  • 【摘要】

    In order to improve nitrogen removal in anoxic/oxic(A/O) process effectively for treating domestic wastewaters, the influence factors, DO(dissolved oxygen), nitrate recirculation, sludge recycle, SRT(... 展开>>In order to improve nitrogen removal in anoxic/oxic(A/O) process effectively for treating domestic wastewaters, the influence factors, DO(dissolved oxygen), nitrate recirculation, sludge recycle, SRT(solids residence time), influent COD/TN and HRT(hydraulic retention time) were studied. Results indicated that it was possible to increase nitrogen removal by using corresponding control strategies, such as, adjusting the DO set point according to effluent ammonia concentration; manipulating nitrate recirculation flow according to nitrate concentration at the end of anoxic zone. Based on the experiments results, a knowledge-based approach for supervision of the nitrogen removal problems was considered, and decision trees for diagnosing nitrification and denitrification problems were built and successfully applied to A/O process. 收起<<

  • 【作者】

  • 【作者单位】

    School of Municipal and Environmental Engineering/School of Municipal and Environmental Engineering/Department of Environmental Engineering

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2004年6期

  • 【关键词】

    A/O process  nitrification  denitrification  nitrogen removal  decision trees 

  • 【基金项目】

    国家自然科学基金 the Key Technology Project of Beijing Municipal Education Commission 北京市科委科研项目