DONG Shan yan,CHEN Gang,CHI Chun rong,et al.Effect of Anaerobic Environment on Performance of UNITANK Process[J].China Water & Wastewater,2018,34(21):74-79.
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Effect of Anaerobic Environment on Performance of UNITANK Process

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第34卷 Number: 21 Page: 74-79 Column: Date of publication: 2018-10-20
Article number:
1000-4602(2018)21-0074-06
Author(s):
DONG Shan yan1; 2; CHEN Gang1; CHI Chun rong1; LIU Zu wen1; 2; CHEN Qi chun3; WAN Li qian3
(1.School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China; 2. Research Center for Water Quality Security Technology at Ganjiang River Basin, Jiangxi University of Science and Technology, Ganzhou 341000, China; 3. Environmental Protection Co. Ltd. Jiangxi Seong Water Industry, Nanchang 330000, China)
Keywords:
UNITANK process; anaerobic time; nitrogen and phosphorus removal; municipal sewage
CLC:
TU992.3
Document code:
C
Abstract:
The effect of the anaerobic time in the side tank on the efficiency of nitrogen and phosphorus removal of the UNITANK process was investigated based on the actual municipal sewage from the south Jiangxi area. The results showed that when the internal reflux ratio was 100%, with the increase of the anaerobic time in the side tank, the removal rate of TN was firstly increased and then decreased, while the removal rate of TP increased gradually. The anaerobic time in the side tank had negligible effect on the removal efficiency of COD and NH3-N. When the anaerobic time was 60 min, the average concentrations of effluent COD, NH3-N, TN and TP were 11.07 mg/L, 0.93 mg/L, 11.78 mg/L and 0.85 mg/L, respectively. All indicators except TP had satisfied the first level A standard in the Discharge Standards of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The dynamic changes of the component concentrations in the half cycle of the side tank were investigated. When the anaerobic time in the side tank was 100 min, the anaerobic phosphorus release was obvious, and the concentration of NO-2-N in the side tank was at the highest level. The processes of denitrification and phosphorus release in the side tank competed for the carbon source.

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Memo

基金项目：国家自然科学基金资助项目(51464014)；江西省教育厅科学技术研究项目(GJJ150662)；江西理工大学博士启动基金资助项目(3401223198)
作者简介： 董姗燕（1977- ），女，安徽明光人，博士，讲师，主要从事污水处理工艺仿真及优化研究。
E-mail:wydeccr@163.com
收稿日期：2018-04-23

Last Update: 2018-11-01