Comparison of effects on partial nitrification between anoxic-oxic and controling DO/HRT process

被引：0

作者：

Zhang J. ^{[1
,2
]}

Zhang Y. ^{[1
]}

Li D. ^{[1
]}

Liang Y. ^{[1
]}

Guan H. ^{[1
]}

Zhao S. ^{[1
]}

机构：

[1] Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing

[2] State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin

来源：

Li, Dong (lidong2006@bjut.edu.cn) | 1600年 / Harbin Institute of Technology卷 / 48期

关键词：

Anoxic-oxic; Continuous stirred-tank reactor (CSTR); Dissolved oxygen (DO); Domestic wastewater; Hydraulic retention time (HRT); Partial nitrification;

D O I：

10.11918/j.issn.0367-6234.2016.08.002

中图分类号：

学科分类号：

摘要：

To compare the effect of two different operational modes on partial nitrification (PN), two-stage continuous stirred-tank reactors (CSTR) 1# (anoxic-oxic) and 2# (controlling DO and HRT) were constructed and operated at room temperature (18-22 ℃). Start-up time, stability, aeration consumption, sludge settling ability, as well as the adaptability to the decreasing of ammonia nitrogen concentration were investigated. PN in 1# and 2# were accomplished in 26 d and 41 d, respectively. When the effluent of an anaerobic/oxic (A/O) process for phosphorous removing (containing ammonia nitrogen 35-43 mg/L) was used as influent, PN was stable both under 1# and 2# condition, however, aeration consumption could be reduced by about 20% in 2#. When the ammonia nitrogen decreasing from 43 to 27 mg/L, PN in 1# would be unstable and the rates of PN decreased to 67.39%. For comparison, PN in 2# could be maintained stable with an ammonia removal rate of >88%. Settleability of sludge was good both in 1# and 2#. Rapid start-up could be achieved through controlling DO and HRT, and a stable and efficient PN could be maintained through anoxic-oxic. © 2016, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.

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页码：11 / 16

页数：5

共 22 条

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