LIXing,ZHONGYu,SUWen-yue,et al.Nitrogen and Phosphorus Removal Effect Analysis of Switchable Micro-aeration Oxidation Ditch[J].China Water & Wastewater,2023,39(6):88-92.
Nitrogen and Phosphorus Removal Effect Analysis of Switchable Micro-aeration Oxidation Ditch
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第6期
Page:
88-92
Column:
Date of publication:
2023-03-17
- Abstract:
- Taking the phase Ⅳ project of a WWTP in Puning of Guangdong Province as an example, the process design, operating mode and actual effect of switchable micro-aeration oxidation ditch is elaborated. The process has strong flexibility, good nitrogen and phosphorus removal (NPR) effects, and stable effluent quality. Switching from the regular mode to the enhanced nitrogen removal mode, TN removal effects are significantly improved, with the average increase of TN removal amount by 3.44 mg/L and that of TN removal rate by 6.1 percentage point, expecting to save operation cost by 0.035-0.084 yuan/m3 of treated sewage. Effects of the enhanced phosphorus removal mode has not been demonstrated yet, however, it will remain flexibility in dealing with future fluctuations of influent quality.
Last Update:
2023-03-17