摘要
通过西安市供水管网的出厂水和管网末梢水的余氯静态衰减试验,利用相关系数分析,将水体中余氯的衰减分为两大类,一阶段型和两阶段型,并建立了水体中余氯衰减的数学模型;通过相对关联度的分析,分别确定了余氯衰减系数k1、k2及分割时间tb三个指标的主要影响因素;通过比较铁、锰对k1、k2及tb的S2A/S2T,分析了铁、锰对余氯衰减过程的影响;试验证明,余氯静态衰减过程中溶解态铁、锰的浓度变化主要受氯氧化作用的影响,总铁、锰的含量,pH和浊度的变化不受余氯浓度的影响。
The correlation coefficient analysis was used to research the water distribution system of Xi＇an. The decay of residual chlorine in bulk of water could be divided in two types： onestage type and two-stage type. According to the relative degree of incidence, the main influence factors of the decay coefficients k1 ,k2 and tb could be determined. Comparing the value of the S^2A/ S^T, the degree of the iron and manganese＇s influence on k1,k2 and tb could be derived. The results of the experiment proved that during the static decay of chlorine, the changes of pH, turbidity and total iron and manganese concentrations were independent to the chlorine, while the concentration of the dissolved iron and manganese reduced for the chlorine＇s oxidizing action.
出处
《给水排水》
CSCD
北大核心
2006年第11期8-12,共5页
Water & Wastewater Engineering
基金
陕西省自然科学基金资助项目(2003E221)。
关键词
余氯衰减
余氯衰减系数
分割时间
相关系数
相对关联度
Residual chlorine decay
Residual chlorme decay coefficient
Section time
Correlation coefficient
The relative degree of incidence
