渗沥液浓缩液管道结垢特性研究

Characteristic Research on Pipes Scaling of Concentrated Leachate

模拟SDA的工艺水系统,建设了一套渗沥液浓缩液实验装置,展开渗沥液浓缩液管道结垢特性的实验研究。结果显示:随着实验持续时间增长,管道结垢的厚度增加,其中以PE25管道结垢厚度的增幅最大,由1.01 mm增加到1.77 mm。不同材质的管道,其结垢厚度存在差别,结垢厚度排序为PE>PVC>哈氏合金。管道结垢成分以MgCO_3·3H_2O为主,占94%以上。

Through simulating the process water system of SDA,a set of concentrated leachate experiment device was built,and we carried out characteristic research on scaling of concentrated leachate pipes.The results showed that the thickness of pipe scaling increased with the experiment time increasing.The scaling thickness of PE25pipe increased fastest which increased from1.01mm to1.77mm.The scaling thickness of different pipes is different.The scaling thickness is as follows:PE>PVC>hastelloy.The main composition of pipe scaling is MgCO3·3H2O,which accounts for more than94%.