Abstract: By static experiments,the calcium carbonate scale inhibition capability of PBTCA and HEDP under low temperature conditions(at 2-15℃) has been investigated. The results show that PBTCA and HEDP have good scale inhibition capability for calcium carbonate at 2-15℃. The initial Ca²⁺ and alkalinity have comparatively great influen-ce on the scale inhibition capability of PBTCA and HEDP. When Ca²⁺+alkalinity concentration increases from(500+600) mg/L to (800+800) mg/L,the scale inhibition rate of PBTCA is dropped from 100% to 65% and the scale inhi-bition rate of HEDP is dropped from 100% to 60%. The presence of PO₄^3-,Zn²⁺,turbidity,etc. has less influence on scale inhibition effect.

Key words: PBTCA, HEDP, low temperature, scale inhibition, calcium carbonate scale

摘要： 通过静态阻垢试验研究了PBTCA和HEDP在低温条件下（2~15℃）的阻碳酸钙垢性能。结果表明： PBTCA和HEDP在2~15℃下的阻碳酸钙垢性能良好。初始钙离子+碱度对PBTCA和HEDP的阻垢性能影响较大，当钙离子+碱度从（500+600） mg/L提高至（800+800） mg/L时，PBTCA和HEDP的阻垢率从100%分别降至65%、60%。PO₄^3-、Zn²⁺和浊度等的存在对PBTCA和HEDP阻垢效果的影响较小。

关键词: PBTCA, HEDP, 低温, 阻垢, 碳酸钙垢

CLC Number: 

• TK268+.2

• TQ085+.4