TREATMENT OF RURAL DOMESTIC SEWAGE BY AN AIR LIFTING A<sup>2</sup>/O PROCESS

ZHANG Ji-ku; SUN Mian

doi:10.13205/j.hjgc.202101002

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

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

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

doi: 10.13205/j.hjgc.202101002

ZHANG Ji-ku,
SUN Mian^,

College of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Received Date: 2019-08-16
Available Online: 2021-04-23

Abstract

Abstract

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.
- integrated A²/O,
- air lifting,
- rural domestic sewage,
- nitrogen and phosphorus removal,
- packing

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References(21)

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