Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (12): 66-69.

• Environment Science & Technology • Previous Articles     Next Articles

Biological Nitrogen Removal in Integrated Oxidation Ditch with Side-Channel Separator

Zhou Shao-qi  Wang Ping   

  1. School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China
  • Received:2006-05-17 Online:2008-12-25 Published:2008-12-25
  • Contact: 周少奇（1965-），男，教授，博士生导师，主要从事环境生物技术、城市污水处理、固体废物处理资源化研究． E-mail:fesqzhou@scut．edu．cn
  • About author:周少奇（1965-），男，教授，博士生导师，主要从事环境生物技术、城市污水处理、固体废物处理资源化研究．
  • Supported by:

    国家科技成果重点推广计划项目（2005EC000288）;广东省科技攻关项目（2003C34502）;华南理工大学亚热带建筑科学国家重点实验室重点研究项目（2008ZA09）;广州市环境保护局污染防治新技术研究开发项目（2008-03）

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Abstract:

At present, the Integrated Oxidation Ditch has become a research hotspot in the environmental protection field due to its small space occupancy and simple process. In this paper, a side-channel-separator Integrated Oxidation Ditch was used to treat the municipal sewage and to perform the biological nitrogen removal. In the experiment, the influent CODCr ranged from 200. 00 to 400. 00 mg/L, the content of NH4＋ -N was rapidly increased from 1.24 to 39.72 mg/L, the effluent CODc~ was kept at less than 15.00mg/L, and the effluent content of NH4＋ -N was generally kept at less than 2. 00 mg/L, showing a stable NH4＋ -N removal efficiency. Furthermore, the effects of alkalinity and CODCr/NH4＋ -N mass ratio on the biological nitrification process were analyzed, and some suggestions were proposed for promoting the denitrification efficiency.

Key words: Integrated Oxidation Ditch, nitrification, denitrification, biological nitrogen removal