HAN Yi,ZHANG Jian bing,HUANG Wei,et al.Effect of Aeration/Idle Time Ratio on Single stage Autotrophic Nitrogen Removal System at Low Temperature[J].China Water & Wastewater,2018,34(21):70-73.
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Effect of Aeration/Idle Time Ratio on Single stage Autotrophic Nitrogen Removal System at Low Temperature

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第34卷 Number: 21 Page: 70-73 Column: Date of publication: 2018-10-20
Article number:
1000-4602(2018)21-0070-04
Author(s):
HAN Yi1; ZHANG Jian bing2; HUANG Wei3; LIN Zi yuan3; ZHOU Jian3
(1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China; 2. Tianjin Municipal Engineering Design & Research Institute, Tianjin 300051, China;  3. Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment , Chongqing University, Chongqing 400045, China)
Keywords:
high ammonia nitrogen wastewater; single stage autotrophic nitrogen removal; aeration/idle time ratio; low temperature
CLC:
YU992.3
Document code:
C
Abstract:
The existing single stage autotrophic nitrogen removal technology generally requires high temperature (25-35 ℃) operating conditions and high costs of treatment. Using high ammonia nitrogen wastewater (≥2 000 mg/L), influence of aeration/idle time ratio on the single stage autotrophic nitrogen removal system was investigated and confirmed. Under the temperature of 15 ℃ and DO of 2.5 mg/L, when the time ratios were 2 h ∶2 h, 4 h ∶4 h, 6 h ∶6 h and 12 h ∶12 h, the effluent concentrations of TN were 267.5 mg/L, 238.0 mg/L, 275.1 mg/L and 367.6 mg/L, and removal rates were 86.6%, 88.1%, 86.2% and 81.6%, respectively. When the time ratio was 4 h ∶4 h, the TN removal rate was the highest. The longer the idling, the lower the DO and the ORP in the liquid phase, which subsequently affected the microenvironment distribution ratio of the autotrophic nitrogen removal system.

References:


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Memo

基金项目：天津市科委企业科技特派员项目(18JCTPJC60400)；天津市教委科研计划项目(2016CJ10)
作者简介：韩懿（1987- ），女，天津人，博士，讲师，研究方向为水污染控制与技术、给排水工程设计。
E-mail:hanyi1127@126.com
收稿日期：2018-01-12

Last Update: 2018-11-01