Study on C-CBR integrated bioreactor for treatment of rural domestic sewage
- LI Fazhan, ZHANG Shuai, ZHANG Jian, LIANG Shuang
JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2018, 48(1):
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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.