净水技术2025，Vol.44Issue(6)：71-77,88,8.DOI:10.15890/j.cnki.jsjs.2025.06.009
某水厂双水源条件下流动电流技术的影响因素与对策
Influencing Factors and Solutions of Streaming Current Technology under Dual-Source Water Conditions in a WTP
摘要
Abstract
[Objective]Changes of streaming current and its influencing factors under the condition of dual water sources in a water treatment plant(WTP)is studied.In addition,this paper solves the problem of a large fluctuation range of streaming current value under the condition of dual water sources,thereby making up for the defects of streaming current technology as a single factor control technology.[Methods]This study analyzed the influencing factors of both water quality and working conditions that affect the value of streaming current from the principle,studied the degree of influence of coexisting interference ions in different water,streaming current detector(SCD)sampling time,and turbidity on the value of streaming current in the process of water treatment through jar tests,and adopted nonlinear regression technology to process data on value of streaming current.[Results]The result showed that there were differences in the magnitude of changes in the streaming current values caused by different ions,with streaming current value of Zn2+increasing by 20 under the same concentration,which was higher than that of Mg2+(streaming current value was 5),and K+and Na+increasing by about 1.The magnitude of changes in the streaming current values caused by divalent ions was higher than that caused by monovalent ions.There was a positive correlation between the streaming current and the concentration of cations.The magnitude mainly depended on the nature of the cations in the electrolyte and the valence of the valence;different SCD sampling times under the streaming current value only a small change(within 2 units),indicating that the water samples and coagulants in the full mixing of the water streaming current value did not change with the change of SCD sampling time;The variation amplitude of the streaming current value of class Ⅰ water was about 4 units,and the variation of the streaming current value of mixed water was irregular.[Conclusion]On the basis of the test result,the introduction of the back propagation(BP)neural network data model for anti-interference filtering data processing,whcih proposes a WTP in the dual water source conditions on the streaming current technology optimization control strategy,this strategy enables dynamic and accurate automatic adjustment of coagulant dosage,expanding the application scope of streaming current technology.关键词
流动电流/双水源/共存干扰离子/流动电流仪(SCD)采样时间/控制策略Key words
streaming current/dual-source water/coexisting interfering ions/streaming current detector(SCD)sampling time/control measure分类
建筑与水利引用本文复制引用
龙虹池,朱希望,吴伟峰,方以晨,高宏程,沈华,俞云芳,刘宏远..某水厂双水源条件下流动电流技术的影响因素与对策[J].净水技术,2025,44(6):71-77,88,8.基金项目
水厂聚合氯化铝精细化投加方案(ZSF12209285) （ZSF12209285）
