新型膦磺酸阻垢缓蚀剂SEDMP的性能评定

对自制的新型膦磺酸阻垢缓蚀剂SEDMP对CaCO3和Ca3(PO4)2的阻垢性能进行评定。在SEDMP加入量为4 mg/L、浓缩至水溶液中Ca2+质量浓度为500 mg/L时,SEDMP对CaCO3的阻垢率为90.6%,对CaCO3的阻垢效果大大优于其他有机膦类阻垢剂。当SEDMP加入量为10 mg/L时,对Ca3(PO4)2的阻垢率为96.0%。SEDMP作为缓蚀剂单独使用时具有一定的缓蚀效果,与磺酸盐共聚物、锌盐复配后效果更佳。SEDMP与常用杀菌剂同时使用时仍可保持良好的对CaCO3的阻垢性能,且不影响杀菌剂的杀菌率。

Performance Evaluation of a Novel Phosphonosulphonate-based Scale and Corrosion Inhibitor SEDMP

The inhibition performance of the self-made phosphonosulphonate-based scale and corrosion inhibitor SEDMP on CaCO3and Ca3(PO4)2was evaluated.When the SEDMP dosage is 4 mg/L and the Ca2+ mass concentration in the concentrated solution is 500 mg/L,the CaCO3-inhibiting efficiency of SEDMP is 90.6%,which is much better than other organic phosphonates.When the SEDMP dosage is 10 mg/L,the Ca3(PO4)2-inhibiting efficiency of SEDMP is 96.0%.The corrosion inhibition effect of SEDMP can be observed when it is used alone,and will be better when it is blended with sulphonate copolymers and zinc salts.When SEDMP is used with common bactericides,the CaCO3-inhibiting performance of SEDMP is still good and the sterilization effects of the bactericides will not be impacted.