关键词: 静电水处理, 聚环氧琥珀酸, 协同阻垢效应, 阻垢机理

Abstract: The influences of electrostatic water treatment on crystallization behavior and crystal forms of CaCO₃ were investigated by using non-evaporation method.A stable stage existed in the early stage of the CaCO₃ crystallization in the water sample treated by electrostatic field, and the length of the stage was affected remarkably by temperature.For instance, the stage lasted 3 h at 60℃, but less than 0.5 h at 80℃.The results of SEM and IR show that the content of aragonite increases in the scale sample formed in the electrostatic water.The appearance of the stable stage and aragonite is because H₂O molecules and HCO₃^- are polarized by electrostatic field and their reactivity increases.The results of the static and dynamic scale inhibition experiments prove obvious synergistic scale inhibition effect between the electrostatic water treatment and polyepoxysuccinic acid(PESA).With PESA in the electrostatic water, the static scale inhibition rate reaches 95.8%, which is 18.9% higher than that in the prepared water, and the dynamic scale inhibition rate is 92.1%, which is 14.5% higher than that in the groundwater.

Key words: electrostatic water treatment, polyepoxysuccinic acid, synergistic scale inhibition effect, scale inhibition mechanism