Abstract:

The effects of orthophosphate and tripolymers AA/AMPS/HPA on calcium carbonate scale are studied by using SEM, XRDand static scale inhibition method. The results showthat using orthophosphate alone has no effect on inhibiting calcium carbonate scale. AA/AMPS/HPA and orthophosphate have synergistic effects on inhibiting calciumcarbonate scale within certain concentration ranges. It proves that the synergistic effect decreases when the concentration of PO₄ ^3- is over 6 mg/L. Proper amount of orthophosphate and AA/AMPS/HPA make the shape of calciumcarbonate change and has obvious inhibiting efficiency on calcite.

Key words: orthophosphate, calcium carbonate, scale inhibition, synergistic effects

摘要：

采用静态阻垢法、SEM、XRD分析技术研究了PO₄^3-与三元共聚物AA/AMPS/HPA对CaCO₃垢的作用。结果表明:单独的PO₄^3-对CaCO₃无任何阻垢作用;8～20mg/LAA/AMPS/HPA+1～6mg/LPO₄^3-在阻CaCO₃垢时表现出显著的协同效应,当PO₄^3-质量浓度超过6mg/L时,两者阻CaCO₃的阻垢率下降,协同效应也不明显。PO₄^3-与AA/AMPS/HPA三元共聚物使CaCO₃的形貌发生变化,对方解石的形成有明显的抑制作用。

关键词: 正磷酸盐, 碳酸钙, 阻垢, 协同效应

CLC Number: 

• TQ085+.412