Abstract:

In order to make out the sterilization effect of frequency conversion magnetic field on the treatment of industrialcirculating cooling water,some factors such as reaction time,temperature,pH value and tube diameter areinvestigated.The results show that the frequency conversion magnetic field has obvious effect on the sterilization ofcirculating cooling water.The sterilization effect increases with the increase of reaction time and temperature.Thebactericidal efficiency is the highest,when the temperature is 45 ℃,the reaction time 60 min,pH 9 and the diameterof tube 2.61 cm.The removal rate of COD_Cr，BOD₅,the total number of bacteria and iron bacteria is 70%,84.62%,88.64% and 92% respectively.

Key words: frequency conversion magnetic field, sterilization, loop coil, iron bacteria

摘要：

通过自制的变频磁场发生器与线圈绕组相连产生变频磁场,对工业循环冷却水进行杀菌处理,分别考察了作用时间、温度、pH和处理管径等因素对杀菌效果的影响。结果表明,变频磁场具有明显的杀菌作用。其杀菌效果随作用时间、温度的增加而增加。在温度为45℃,作用时间60min,pH为9,处理管径为2.61cm时,变频磁场的杀菌效果最好,COD_Cr去除率为70%,BOD₅去除率为84.62%,细菌总数去除率为88.64%,铁细菌的去除率为92%。

关键词: 变频磁场, 杀菌, 线圈绕组, 铁细菌

CLC Number: 

• TQ085