JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2018, Vol. 48 ›› Issue (1): 124-130.doi: 10.6040/j.issn.1672-3961.0.2017.452

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Study on C-CBR integrated bioreactor for treatment of rural domestic sewage

LI Fazhan1, ZHANG Shuai1, ZHANG Jian2, LIANG Shuang2   

  1. 1. School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, Henan, China;
    2. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China
  • Received:2017-09-05 Online:2018-02-20 Published:2017-09-05

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Abstract: In order to improve the rural water environment, the continuous-flow continuous biochemical reactor(C-CBR)integrated bioreactor for the treatment of rural domestic sewage was studied based on the basic of reversed A2/O process. The results showed that the C-CBR was operated under the condition of average temperature of 23 ℃, hydraulic retention time of 12.9 h and mixed solution reflux ratio of 400%. The average removal rates of COD, NH4+-N, TN and TP were 74.3%,53.8%,50.1% and 60.3%, corresponding to the relative influent concentrations of 242, 35, 56 and 4.2 mg/L, respectively. The average concentrations of effluent were 60.6, 15.9, 27.1 and 1.7 mg/L, respectively. Effluent quality could meet the secondary standard of "Discharge standard of pollutants for municipal wastewater treatment plant". The operating costs was calculated to be merely 0.55 RMB/t.

Key words: C-CBR, integrated reactor, biological treatment, nitrogen and phosphorus removal, rural domestic sewage

CLC Number: 

  • X703.1
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