摘要
究了水温变化对水处理混凝过程流动电流参数的影响程度。结果表明 ,随着温度的上升 ,胶体颗粒的流动电流值负增长 ,胶粒的稳定性增强 ;在相同絮凝剂剂量下胶体流动电流值上升到等电点所需的时间变长 ,甚至达不到等电点 ;最佳投药量增加。因此 ,温度的升高不利于胶粒的凝聚 。
The influence of temperature on streaming current in coagulation was investigated in this study. Results indicated that there was a negative growth of streaming current of colloids and the stability of colloids was strengthened with increase of temperature, which can also prolong the time needed to produce a net zero charge. Thus the optimal dosage increased. It was disadvantageous to coagulation to raise temperature. Waterworks should adjust the set value of streaming current based on temperature change.
出处
《环境科学与技术》
CAS
CSCD
2004年第6期73-75,共3页
Environmental Science & Technology
基金
国家 8 63资助项目 (2 0 0 2AA60 1 1 2 0 )
关键词
流动电流
温度
混凝
streaming current
temperature
coagulation
