原水硬度对臭氧和高锰酸钾预氧化除藻效果的影响  

Effect of Raw Water Hardness on Algae Removal by Ozone or Potassium Permanganate Preoxidation

作　　者：王晓云 蒋柱武 付爱民 WANG Xiao-yun;JIANG Zhu-wu;FU Ai-min(College of Ecological Environment and Urban Construction,Fyjian Unirersily of Technology,Fuzhou 350008,China;Center for Safety and Energy Conservation Techonlogy of Urban Water Supply and Drainage System,Fuzhou 350008,China;Fujian Ningde Nuclear Power Company Limited,Ningde 355200,China)

机构地区：[1]福建工程学院生态环境与城市建设学院,福建福州350008 [2]城镇给排水系统安全与节能工程技术中心,福建福州350008 [3]福建宁德核电有限公司,福建宁德355200

出　　处：《中国给水排水》2021年第1期46-50,共5页China Water & Wastewater

基　　金：国家自然科学基金资助面上项目(51878171)。

摘　　要：为掌握原水硬度对除藻效果的影响,以绿藻为研究对象,在原水钙硬度为50~300mg/L的环境下进行了臭氧和高锰酸钾的混凝除藻实验。混凝实验结果显示,不同的钙离子浓度均能显著提高臭氧和高锰酸钾的混凝除藻效果。当钙离子浓度较低时,臭氧预氧化—混凝除藻效果优于高锰酸钾预氧化—混凝;但当钙硬度> 90 mg/L时,高锰酸钾预氧化—混凝除藻效果则优于臭氧预氧化—混凝。水厂原水的3组平行实验数据也证明在高硬度环境下高锰酸钾预氧化—混凝除藻效果优于臭氧预氧化—混凝。In order to understand the effect of raw water hardness on algae removal,green algae in raw water with different calcium hardness of 50-300 mg/L was removed by ozone preoxidation-coagulation or potassium permanganate preoxidation-coagulation. Coagulation tests showed that different concentrations of calcium ions could significantly enhance the algae removal efficiency by ozone preoxidation-coagulation and potassium permanganate preoxidation-coagulation. When the concentration of calcium ion was low,the algae removal efficiency of ozone preoxidation-coagulation was better than that of potassium permanganate preoxidation-coagulation. However,when the hardness of calcium was higher than 90 mg/L,the algae removal efficiency of potassium permanganate preoxidation-coagulation was better than that of ozone preoxidation-coagulation. Three sets of parallel test data of actual raw water in waterworks also proved that potassium permanganate preoxidation-coagulation had better algae removal efficiency than that of ozone preoxidation-coagulation in high hardness environment.

关 键 词：原水硬度 除藻 臭氧预氧化 高锰酸钾预氧化 混凝 ZETA电位 

分 类 号：TU991[建筑科学—市政工程]