WANGHao,LIUGuo-liang,CHANGJiang,et al.Development of MBR Precise Aeration Control System and Its Energy-saving Effect[J].China Water & Wastewater,2024,40(11):13-18.
Development of MBR Precise Aeration Control System and Its Energy-saving Effect
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第11期
Page:
13-18
Column:
Date of publication:
2024-06-01
- Keywords:
- membrane bioreactor; precise aeration control system; mathematical model; energy consumption; effluent quality
- Abstract:
- The high energy consumption limits the widespread application of membrane bioreactor (MBR), and it is the future development trend of MBR to realize energy conservation and consumption reduction through precise regulation. In this study, a set of MBR precise aeration control system was established. The box plot method and 3σ statistical method were used to monitor outliers on the original data set, and a multivariate nonlinear regression model between aeration volume and water permeability was established based on least square method. The results showed that the cleaning algorithm could remove 25% of outliers to ensure data quality. The mathematical model fitted the data well, and the coefficient of determination R2 was greater than 0.99. MBR precise aeration control system had stable control effect on membrane unit permeability under different conditions, and significant energy-saving effect. Compared with the traditional aeration control mode, the aeration of the membrane unit for flat membrane and hollow fiber membrane decreased by 20.0% and 21.4%, and energy consumption decreased by 8.2% and 19.0%，respectively. The effluent quality under the traditional and precise control was stable and up to standard，and the precise aeration control system would not affect the effluent quality.
Last Update:
2024-06-01