西安交通大学动力工程多相流国家重点实验室,西安,710049
网络首发:2009-05-10,
纸质出版:2009
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徐浩, 延卫, 汤成莉. 水垢的电化学去除工艺与机理研究[J]. 西安交通大学学报, 2009,43(5):104-108.
Technology and Mechanism of Water Scale Removal by Electrochemical Method[J]. 2009, 43(5): 104-108.
详细研究了电子水处理过程中的阻垢及除垢过程.研究表明
对于硬度大于300 mg·L
-1
(以CaCO
3
计
下同)的高硬度水样
先用7 V的高电压进行阻垢处理
当其硬度降至130 mg·L
-1
以下后
改为5 V的低电压进行除垢处理.以此种方式运行
可用较低的能耗
在保证换热器表面无水垢析出的前提下去除水中超过90%的成垢离子.扫描电镜图片显示
电子水处理技术对所形成水垢的晶型有一定的影响
未经过电子水处理形成的水垢呈现方解石晶型
而经过电子水处理形成的水垢呈现文石晶型.
The scale inhibition and removal processes by electronic water treatment were investigated in this study. The results show that the treatment of scale inhibition with 7.0V can be used first for the water with the hardness over 300 mg·L
-1
(CaCO
3
)
and then the treatment of scale removal with 5.0V can be applied when the water hardness decreases to less than 130 mg·L
-1
(CaCO
3
). With the present energy-saving approach
more than 90 percent of the scale ions can be removed after treatment and no obvious scale will decompose on the surface of the heat exchanger. The SEM figures depict that the crystal morphology of scale is affected by the electronic water treatment. The crystal morphology of scale with and without the electronic water treatment is calcite and aragonite
respectively.
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