南京农业大学学报2025，Vol.48Issue(2)：498-504,7.DOI:10.7685/jnau.202402019
溶解氧浓度对增氧机增氧性能的影响
Effects of dissolved oxygen concentration on the oxygenation performance of aerators
摘要
Abstract
[Objectives]As a key equipment to improve the dissolved oxygen content of the water body,the aerator plays a pivotal role in the aquaculture field,however,how the change of dissolved oxygen concentration affects the performance of the aerator in the process of aeration is still an unclear problem.The paper aimed to study the influence of initial dissolved oxygen concentration on the performance of aerator during the aeration process.[Methods]This study constructed an aeration test platform,and selected three representative aerators of aeration type,fountain type and wave type for topological combination,and composed a total of 31 aeration methods,which were tested at 20℃water temperature.[Results]With the gradual increase of dissolved oxygen concentration,the duration of oxygen increase showed an exponential growth trend under the condition of a certain increase in dissolved oxygen concentration.When the dissolved oxygen concentration was less than 7 mg·L-1,variation coefficient of oxygen mass transfer coefficient was less than 8%,and the influence of dissolved oxygen concentration on oxygen mass transfer coefficient was small.And with the increase of dissolved oxygen concentration,the calculated aeration capacity of the aerator was closer and closer to the calculated results in the standard.When the dissolved oxygen concentration increment was 6 mg·L-1,the average deviation of the aeration capacity of the aerator was 0.009 g·h-1,and the standard deviation was 0.044.[Conclusions]This research provided theoretical guidance for the rapid assessment of the oxygen-increasing performance of aerators and the determination and optimization of intelligent control parameters.关键词
增氧机/溶解氧/增氧时间/氧质量转移系数/增氧能力Key words
aerator/dissolved oxygen/oxygenation time/oxygen mass transfer coefficient/oxygenation capacity分类
水产学引用本文复制引用
刘和来,吴野,顾家冰,刘玉涛,丁为民,赵三琴..溶解氧浓度对增氧机增氧性能的影响[J].南京农业大学学报,2025,48(2):498-504,7.基金项目
江苏省重点研发计划(现代农业)项目(BE2019326) （现代农业）
江苏省现代农机装备与技术示范推广项目(NJ2024-02) （NJ2024-02）
