氯灭活地下水源水中真菌的效能研究  

Inactivation of Fungi in Drinking Groundwater by Chlorine

作　　者：赵建超[1] 黄廷林[1] 任崴[1] 文刚[1] 刘乐[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《中国给水排水》2017年第3期54-57,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51678472);中国博士后基金资助项目(2015M580821;2016T90896);陕西省青年科技新星计划项目(2016KJXX-65)

摘　　要：以地下水源水中的真菌为研究对象,采用氯对其进行灭活,考察了氯浓度、反应时间、pH值、温度等因素对灭活效果的影响;同时在Hom模型的基础上,将灭活速率常数k表示成温度T和pH值的函数,对Hom模型进行了优化。结果表明,随着温度的升高,氯对真菌的灭活能力增强;酸性条件下氯对真菌的灭活能力强于碱性条件下;优化后的Hom模型既能很好地解释消毒过程中的"滞后"现象,又将pH值和温度T优化到模型中,更好地模拟了实际消毒过程;同时也得到了4个因素影响氯灭活真菌效果的主次顺序,即反应时间>温度>消毒剂浓度>pH值。The inactivation effect of fungi in drinking groundwater by chlorine was studied. Factors including chlorine concentration, contact time, pH and temperature, which might influence the inactivation efficiency, were evaluated. The disinfection model based on Horn model was modified and the inacti- vation rate constant was expressed as a function of pH and temperature. The results showed that the inactivation rate of fungi by chlorine increased with the rise of temperature. The disinfection ability of chlorine under the acid condition was stronger than that under the alkali condition. The modified Horn model could not only explain the lag phenomenon, but also accurately simulate the disinfection process by optimizing pH and temperature. The modified disinfection kinetic model also showed the effect sequence of four factors on the inactivation efficiency： contact time, temperature, chlorine concentration and pH.

关 键 词：氯 真菌 地下水 消毒模型 

分 类 号：TU991.2[建筑科学—市政工程]