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Supervised by Ministry of Industry and Information Technology of The People''s Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

Related citation:Ming Yu,Yu Tian.Optimization for Nitrogen Removal in Anoxic/Oxic-Membrane Bioreactor by Response Surface Methodology[J].Journal of Harbin Institute Of Technology(New Series),2020,27(5):29-37.DOI:10.11916/j.issn.1005-9113.18143.
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Optimization for Nitrogen Removal in Anoxic/Oxic-Membrane Bioreactor by Response Surface Methodology
Author NameAffiliation
Ming Yu School of Environment, Harbin Institute of Technology, Harbin 150090, China 
Yu Tian School of Environment, Harbin Institute of Technology, Harbin 150090, China 
The optimal operating condition for the total nitrogen (TN) removal in an anoxic/oxic-membrane reactor (A/O-MBR) was studied by employing response surface methodology (RSM), which is a statistical test method for optimizing stochastic processes. The individual and interactive influences of three operating parameters including dissolved oxygen in aerobic tank (DO), internal mixed liquor recycle rate (IR), and mixed liquor suspended solids (MLSS) on the TN removal efficiency were evaluated. TN removal efficiency increased first and then reduced with the increase of DO, IR, and MLSS. Results from RSM indicated that the three factors had significant interactive influences on the TN removal efficiency. Meanwhile, the interaction between DO and MLSS had more significant effects on the TN removal efficiency than those of the other two. The maximum TN removal efficiency was forecasted at 83.34% according to the model when MLSS was 7926.6 mg/L, IR was 371.8%, and DO was 3.5 mg/L. Under this optimum condition, the experimental TN removal efficiency was 83.13%, which further confirmed that the optimum strategy was reliable.
Key words:  A/O-MBR  TN removal efficiency  optimization  RSM  operating condition
Descriptions in Chinese:



(哈尔滨工业大学 环境学院,哈尔滨 150001)



关键词:缺氧/好氧-膜生物反应器(A/O-MBR),TN 去除率,优化,响应曲面法(RSM),运行条件