不同增氧终端结构对养殖海水增氧效果的影响

比较分析了一定气量下不同增氧终端结构以及一定增氧终端结构下不同通气量强度对养殖海水的增氧效果。试验结果表明,在一定充气量下,随着气石目数的增加其增氧效果越好,即100目依次优于80目和60目;在一定增氧终端结构下,通气量强度越大,水体的增氧效果就越明显。在试验通气量30~150 L/h范围内,于充气量120 mg/L时,100目气石的增氧效果最高;为获得最佳增氧效果,需将气石目数与通气量高低合理搭配。当通气量较低时,应选择目数较小的气石;而通气量较高时,需选择目数较大的气石。探讨最佳增氧效率、氧利用率和动力效率,对节能增效、指导生产实践具有重要的现实意义。

The efficiency to increase dissolved oxygen(DO)by different aerobic terminals

This paper analized the efficiency to increase dissolved oxygen by different aerobic terminals or/and by different intensity of air volume.The results demonstrated that the airstone of 100 mesh had a better effiency to increasing DO than 80 mesh and 60 mesh,as the intensity of air volvme was fixed through the aerobic terminal.While the higher intensity of air volvme,and the higher of DO in sea water as the aerobic terminal structure was chosen.The intensity of air volvme were tested between 30 L/h~150 L/h during the experiment,in which the airstone of 100 mesh approached the highest DO value as the intensity of air volvme was being 120 mg/L.In sum,the mesh of airstone should match up to the intensity of air volvme in order to obtain the better DO in water body.