Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (3): 142-148.doi: 10.3969/j.issn.1000-565X.2016.03.020

• Biological Engineering • Previous Articles    

Investigation into Biofilm Colonization on a New-Type Biofilm Reactor for Domestic Wastewater Treatment in Traditional Villages

PU Yue-wu1 XU Xiao-ma1 WANG Si-yao1 WU Jie-jie1 WEI Cheng2   

  1. 1.School of Biological Science and Engineering,South China University of Technology,Guangzhou 510006,Guangdong,China; 2.School of Architecture//State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2015-04-24 Revised:2015-06-21 Online:2016-03-25 Published:2016-02-02
  • Contact: 魏成(1972-)，男，博士，副教授，硕士生导师，主要从事城乡规划与设计、传统村落保护等相关研究． E-mail:weicheng@scut.edu.cn
  • About author:浦跃武(1964-)，男，博士，副教授，主要从事污水治理、生物质能源研究． E-mail:g96123@ scut． edu． cn
  • Supported by:
    Supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of Chinaduring the Twelfth Five-year Plan Period(2014BAL06B02)

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Abstract: A new-type biofilm reactor started up by adding activated sludge manually was designed to treat the do- mestic wastewater in traditional villages,and the influences of COD load,C/N ratio and the reflux ratio on system operation were investigated.Experimental results show that (1) the addition of activated sludge helps successfully colony biofilm with good appearance and obvious microbial morphology variation in a short time; (2) both COD and NH+4 -N removal efficiencies achieve more than 85% after the biofilm colonization; (3) the operating efficiency of biofilm reactor is greatly affected by COD load,C/N ratio and reflux ratio; and (4) the COD and NH+4 -N removal efficiencies respectively achieve 91.46% and 88.65% at a COD load of 0.25kg/(m 2 ·d),a C/N ratio of 10.2 and a reflux ratio of 9.17.

Key words: biofilm reactor, domestic wastewater treatment, biofilm colonization start-up, COD load, C/N ratio, reflux ratio