The Comparison and Analysis of the Operating Effects of the Surface Aeration to Bottom Aeration Process Design for Oxidation Ditches in Wastewater Treatment Plants
The sewage treatment plant was completed in 2013 of the Songjiang Industrial Agglomeration Zone of Luohe City,which the treatment capacity was 3×104 m3/d.The biochemical process adopted the hydrolysis acidification tank and the improved oxidation ditch.The oxidation ditch originally adopted the inverted umbrella type surface aerator for aeration.The surface aerator was changed to the lifting bottom aeration system during the upgrading and renovation project in 2022.Through the analysis of the operation of the sewage treatment plant,it was found that after the renovation,while ensuring the effluent up-to-standard,the bottom aeration system had a higher oxygen filling efficiency,and a less affection by the season,a less carbon source addition,a less electricity consume,and easy maintain.Therefore,upgrading and renovation project provided strong guarantees for the long-term stable operation of sewage plants.
Oxidation ditchesSurface aeration renovation bottom aerationReduce energy consumptionSteadily up-to-standard
万方数据
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