Core Chinese Journal
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Source Journal for Chinese Scientific and Technical Papers
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Volume 39 Issue 1
Apr.  2021
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ZHANG Ji-ku, SUN Mian. TREATMENT OF RURAL DOMESTIC SEWAGE BY AN AIR LIFTING A2/O PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 18-23. doi: 10.13205/j.hjgc.202101002
Citation: ZHANG Ji-ku, SUN Mian. TREATMENT OF RURAL DOMESTIC SEWAGE BY AN AIR LIFTING A2/O PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 18-23. doi: 10.13205/j.hjgc.202101002

TREATMENT OF RURAL DOMESTIC SEWAGE BY AN AIR LIFTING A2/O PROCESS

doi: 10.13205/j.hjgc.202101002
  • Received Date: 2019-08-16
    Available Online: 2021-04-23
  • Considering the economic conditions in rural areas,the air hoist was used to replace the traditional reflux pump,and the air lifting A2/O integrated device was used to analyze the nitrogen and phosphorus removal of rural domestic sewage. Under the condition of high DO reflux liquid promoted by air, the effects of different reflux ratio of nitrifying liquid and DO concentration in aeration tank on sewage purification effect were investigated. The results showed that controlling sludge reflux ratio was 70%,HRT was 12 h,sludge age was 15 d. With aims of energy saving, consumption reduction and pollutant purification performance considered comprehensively, it was found out that the optimized condition was the reflux ratio of nitrifying liquid of 200% and DO of 2.0 mg/L.
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